Modern Solid State NMR strategies for the structural characterization of amorphous solids Leo van Wüllen
|
|
- Ashley Cannon
- 6 years ago
- Views:
Transcription
1 Modern Solid State NMR strategies for the structural characterization of amorphous solids Leo van Wüllen Institute of Physical Chemistry University of Münster
2 The van Wüllen group at Münster Inorganic materials science Dr. Stefan Puls Dipl.-Phys. Sebstian Wegner solid state NMR methods development Dipl.-Chem. Thomas Köster Dr. Gregory Tricot
3 Today s menue The basics magnetic moments, precession B 0 and B 1 -fields how to obtain an NMR signal First examples phosphate glasses borosilicate glasses Internal interactions chemical shielding magn. dipole interactions elect. quadrupole interactions Magic Angle Spinning (MAS) NMR More examples and advanced techniques REDOR NMR Si-B-N-C ceramics MQMAS-NMR B O 3 -SiO glasses D-CPHETCOR M O-Al O 3 -P O 5 -glasses
4 The basics Nuclear magnetism Nuclear magnetic moment: Jˆ µ = γ = Iˆ γ I, the angular momentum, is subject to quantization laws, concerning both magnitude and orientation z m α I: spin quantum number m: orientational quantum number with m=-i,-i+1, I-1,I cos( α) = m I( I + 1)
5 The basics Detection of nuclear magnetism by application of a magnetic field B 0 H ˆ = ˆ = ˆ Z B I B γ B Z µ Z 0 Z 0 e.g. I = ½; two states with m = ½, - ½ E = 1 1 γ B E = γ B E E = ω B = 0 degenerate radio waves spectroscopic splitting: ω =γb 0 B > 0;non-degenerate NMR is element selective
6 The basics Solid State NMR Periodic Table 1 H 3 He 7 Li Be 3 Na 5 Mg 11 B 13 C 15 N 17 O 19 F Ne 7 Al 9 Si 31 P 33 S 35 Cl Ar 39 K 51 V 53 Cr 55 Mn 57 Fe 59 Co 61 Ni 65 Cu 67 Zn 71 Ga 73 Ge 75 As 77 Se 79 Br Kr 43 Ca 45 Sc 47 Ti 87 Rb Sr 89 Y 93 Nb 95 Mo Tc Ru 103 Rh 105 Pd 107 Ag 113 Cd 115 In 117 Sn 13 Sb 15 Te 17 I 19 Xe 91 Zr 133 Cs Hf Ta 183 W Re Os Ir 195 Pt Au 01 Ba La Hg 05 Tl 07 Pb Bi Po At Rn Fr Ra Ac Useful candidates for solid state NMR Low sensitivity In general no solid state NMR possible
7 The basics Macroscopic sample In a sample spins are distributed among energy levels ( Boltzmann-distribution)l z M 0 Macroscopic magnetization along B 0 No net magnetization in x- or y-direction Curie Law: I( I + 1) MZ = M = N γ B 3kT 0 0 x m = 1 1 m = + y NMR is quantitative!!
8 The basics Precession Precession of spins around external field similar to gyroscope B 0 z E E = ω 1 m = B 0 = 0 x y B 0 > 0 1 m = + NMR measures the precession (Larmor) frequency ω = γb 0
9 The basics The rotating frame To simplify the description of the magnetization s time dependence a rotating frame is introduced Laboratory frame B 0 z Rotating frame z µ y y x x
10 The basics The action of the B 1 -field remember: irradiation with electromagnetic wave, only B-part is used. This is linearly polarized. B = B + B lin R L = B cos( ωt) + isin( ωt) 1 + B cos( ωt) isin( ωt) = 1 B cos( ωt) 1 B l and B r are rotationg in xy-plane with frequencies ω L and ω L ; only the component with the correct precession sense can interact with the precessing magnetization.
11 The basics The action of the B 1 -field In laboratory frame: rotation of magnetization with ω 0 around B 0. B 1 rotates with ω 0 around z. In rotating frame: the part of B 1 with the corrent sense of precession is toggled to the y -axis. Magnetization will precess about this B 1 -field. If B 1 -field is on continuously, then the magnetization will precess in the zx -plane with frequency ω = γ B 1 This frequency is called the nutation frequency.
12 The basics The action of the B 1 -field z z M 0 M 0 x B 1 y 90 pulse: rotates the z-magnetization into the x-y-plane x 180 pulse: flips the z-magnetization into the z-direction B 1 y
13 The basics Measuring NMR spectra = Detection of Larmor frequencies present in the sample 1. B 1 field is irradiated for a short time t p along the x,y direction. If γb 1 t p = π/ then M z is flipped by 90 degrees (90 pulse) B 0 z B 0 z M 0 M 0 B 1 B 1 x y x y
14 The basics obtaining the NMR signal 90 pulse -> magnetization flip Free Induction Decay rf irradiation signal detection t/s NMR-Spectrum Fourier- Transformation ν/hz F( ω ) = f ( t) * e iωt dt
15 The basics Equipment magnet/console probe sample in rotor Macor ZrO Kel-F BN Vespel
16 The basics relaxation processes z z z M 0 M 0 y x T spin spin relaxation y x T 1 spin lattice relaxation y x
17 Internal interactions Why is NMR so cool? internal interactions inducing local electric and magnetic fields ˆ ˆ µ = γ I 1 H 1 H ˆ E = µ B= µ ˆ( B + B ) 0 int ν NMR signal depends on the immediate neighborhood of the nucleus H ˆ = H ˆ + H ˆ + H ˆ + H ˆ + H ˆ +... Zeeman RF Pulse Chem. Shift dipole quadrupole
18 Internal interactions Magnetic shielding Resonance frequency (bare nucleus): Effective magnetic field at nucleus: Resonance frequency (real sample) ω 0 = γb 0 B eff ω L = B0 (1 σ ) = γb (1 0 σ ) Chemical shift δ ω x L ω ω ref L ref L Effective magnetic field arises from shielding or deshielding of the external magnetic field by electrons Probe for electronic environment ( bonding)
19 Internal interactions Chemical Shielding Anisotropy Shielding is anisotropic in nature and can be described by its components in the molecular axis system B 0 1 ω =ω σ σ σ θ 3 L 0 1 iso ( z z x x )(3cos 1) orientational dependence of the resonance frequency θ Q 3 unit in phosphate glass
20 Internal interactions Chemical Shielding Anisotropy Shielding is anisotropic in nature and can be described by its components in the molecular axis system B 0 1 ω =ω σ σ σ θ 3 L 0 1 iso ( z z x x )(3cos 1) orientational dependence of the resonance frequency θ Q 3 unit in phosphate glass
21 Internal interactions example: 31 P NMR of phosphates Q 3 σ σ = 0 σ σ PAS 33 Q ω iso ω iso ω iso cubic axially symmetric asymmetric Q 1 σ 11 =σ =σ 33 σ 11 =σ <σ 33 σ 11 <σ <σ 33 Q 0 Probe for local symmetry ( bonding geometry)
22 Internal interactions Magnetic dipole interaction Magnetic moments of nearby spins affect the local magnetic field and thus the resonance frequency. Through-space interaction ˆ γγ µ IS I S 0 Hdip = I S (3cos 1) 3 Z Z β π r 4π ˆ ˆ B 0 β r IS S probe of internuclear distance I
23 Internal interactions Electric Quadrupole Interactions Quadrupolar interaction : For nuclei with I>1/ the spatial distribution of nuclear charge is not spherically symmetric described by quadrupolar moment probe for local symmetry
24 Internal interactions effect of quad. interaction on the NMR signal I = 3/ ĤZ (1) Hˆ Z + Hˆ Q central transition, independent of orientation satellite transitions, orientation dependence frequency
25 Internal interactions Strong quadrupolar coupling I = 3/ ĤZ (1) Hˆ Z + Hˆ Q Hˆ + Hˆ () Z Q Second-order perturbation theory only central transition observable anisotropic, orientation dependent ω ω (m) = m δ +ω Q Q 4 CS 0 Q { iso 0 ( I(I + 1) 3m ) 10 + ω ( ϑ, ϕ) I(I 1) 6 1 ( 8 + 1m 3) (3cos θ 1) 4 ( 18I(I + 1) 34m 5) (35cos θ 30 cos 3) } + ω ( ϑ, ϕ) θ+
26 Internal interactions Strong quadrupolar coupling eq 1 st order quadrupolar coupling constant C Q CQ = VZZ h asymmetry parameter η V V ηq = VZZ qeff CQ 3 r XX YY nd order frequency η = 0 η = 0.3 Non-axial EFG η = 1 ν ν ν
27 Internal interactions Solid State NMR element-selective locally selective quantitative experimentally flexible: Selective averaging B 0 E hν E= γ B 0 H = H Z + H D + H CS + H Q Internucl. distances Coordination numbers and symmetries
28 Internal interactions B 0 Magic Angle Spinning (MAS) D const H = (3cos Θ 1) 3 r static rotation axis Θ 1 Θ MAS iso 1 st order H ˆ = H ˆ + H ˆ + H ˆ + H ˆ +... Zeeman Chem. Shift dipole quadrupole
29 NMR and the structure of glasses Short range order B,Si,P O, N Li,Na,K chemical shielding quadrupolar interaction MAS-NMR, MQMAS-NMR directly bonded neighbors coordination numbers site quantification short range order 1-.5 Å
30 NMR and the structure of glasses Intermediate range order B,Si,P O, N Li,Na,K magnetic dipole interaction dipolar NMR REDOR, REAPDOR, CPMAS D HETCOR network former connectivities correlation former modifier intermediate range order.5-6 Å
31 NMR and the structure of glasses first examples Network depolymerisation in a Li O-P O 5 glass Q P- MAS- NMR Q Q 3 Q Li O Q 3 Q 1 Q Q δ/ppm
32 NMR and the structure of glasses first examples Boron speciation in a borosilicate glass BO 3 BO 4 δ iso C Q, η Q area δ iso area BO 4 in borate environment BO 3 in borate environment BO 4 in borosilicate environment BO 3 in borosilicate environment δ/ppm
33 NMR and the structure of glasses more examples --- SiBNC Synthesis strategy and performance of Si 3 B 3 N 7 and SiBN 3 C Hi- Nicalon fibre ºC polycondensation of single source precursors TADB Cl 3 Si NH Cl B NH 3 -NH 4 Cl polycondensation Polyborosilazane N 100 C Pyrolysis Si 3 B 3 N 7 SiBN 3 C-fibre ºC CH 3 NH -CH 3 NH 3 Cl N- methylpolyborosilazane NH C N 100 C SiBN 3 C
34 NMR and the structure of glasses more examples --- SiBNC 9 Si 3 B 3 N 7 : MAS single pulse spectra 9 Si-MAS 11 B-MAS δ iso = -45.ppm SiN 4/3 δ iso = 30.4 ppm C Q =.9 MHz η = 0.1 BN 3/ δ/ppm δ/ppm
35 NMR and the structure of glasses more examples --- SiBNC intermediate range order nd coordination sphere boron nd coordination sphere silicon
36 NMR and the structure of glasses more examples --- SiBNC --- REDOR Modulation of dipolar coupling under MAS 11 B Magic- Angle Spinning (MAS) ˆ IS H D + ˆ IS H D = 0 - T r S I 9 Si Rotational Echo Double Resonance (REDOR) ˆ IS H D + + ˆ IS H D 0 T r Hˆ IS D = 1 Iˆ Sˆ sin( t) 3 Z Z ωr r I-channel π Puls ( 9 Si) ( Iˆ Iˆ ) z z
37 NMR and the structure of glasses more examples --- SiBNC --- REDOR REDOR S I 0 4 TR Hˆ IS D S 0 -S = f(r, NT S R ) 0 MAS-Spin echo S Hˆ IS D 0 4 TR
38 NMR and the structure of glasses more examples --- SiBNC --- REDOR 11 B-{ 9 Si}-REDOR Si 3 B 3 N 7 11 B Spin-Echo 0.8 ms.4 ms 4 ms 11 B-{ 9 Si}-REDOR S
39 NMR and the structure of glasses more examples --- SiBNC --- REDOR 11 B-{ 9 Si}-REDOR Si 3 B 3 N 7 11 B Spin-Echo 0.8 ms.4 ms 4 ms 11 B-{ 9 Si}-REDOR S/S ,0 S/S 0 0,8 0,6 0,4 0, 1 cos γγ µ = sin ϑ sinϕ sinϑdϑdϕ S π π S 1 I S 0 0 4πS NTR 3 0 8π 0 0 r 0,0 0,000 0,00 0,004 0,006 0,008 NT R /s
40 NMR and the structure of glasses more examples --- SiBNC --- REDOR 11 B- 9 Si-REDOR 9 Si-{ 11 B} RE(AP)DOR 1, B-Si threespin (d =.74Å) 1, Si-B threespin S/S 0 1,0 1,0 0,8 S/S 0 0,8 0,6 0,6 0,4 0,4 0, B-Si twospin 0, Si-B twospin 0,0 0,000 0,00 0,004 0,006 0,008 NT R /s 0,0 0,000 0,004 0,008 0,01 NT R /s 1.4 Si per BN 3/3 1.8 B per SiN 4/3
41 NMR and the structure of glasses more examples --- SiBNC Network model 11B-MAS 9Si-MAS 11B-{9Si}-REDOR 11B spin-echo 9Si-{11B}-REAPDOR 9Si spin-echo 1.4Si 4-5B 1.8B 6Si Si-N rich domains B-N rich domains
42 NMR and the structure of glasses more examples --- B O 3 SiO glasses mixing of network polyhedra or phase separation?? B O 3 SiO
43 NMR and the structure of glasses more examples --- B O 3 SiO glasses 11 B-MAS 9 Si-MAS xb O 3 = 0.8 xb O 3 = 0.7 xb O 3 = 0.6 xb O 3 = 0.5 xb O 3 = 0.4 xb O 3 = δ/ppm δ/ppm
44 NMR and the structure of glasses more examples --- B O 3 SiO glasses 11 B NMR static ω ω (m) = m δ +ω Q Q 4 CS 0 Q { iso 0 ( I(I + 1) 3m ) 10 + ω ( ϑ, ϕ) I(I 1) 6 1 ( 8 + 1m 3) (3cos θ 1) 4 ( 18I(I + 1) 34m 5) (35cos θ 30cos 3) } + ω ( ϑ, ϕ) θ+ 0.5 (3cos θ-1) = 0 MAS???
45 NMR and the structure of glasses more examples --- B O 3 SiO glasses 11 B NMR static ω ω (m) = m δ +ω Q Q 4 CS 0 Q { iso 0 ( I(I + 1) 3m ) 10 + ω ( ϑ, ϕ) I(I 1) 6 1 ( 8 + 1m 3) (3cos θ 1) 4 ( 18I(I + 1) 34m 5) (35cos θ 30cos 3) } + ω ( ϑ, ϕ) θ+ 0.5 (3cos θ-1) = 0 MAS 1,0 P l (cosθ) 0,5 l = ; 0.5 (3cos θ-1) l = 4; 0.15(35cos 4 θ -30cos θ+3)??? 0,0-0, θ/degrees
46 NMR and the structure of glasses more examples --- BSi-glasses --- MQMAS 11 B MQMAS-spectroscopy BSi-glass 0.8 B O SiO n t 1 t ppm -0 eliminate 4 th Legendrian and nd Legendrian I = 3/ -3/ I = 1/ -1/ ppm ppm eliminate nd Legendrian
47 NMR and the structure of glasses more examples --- BSi-glasses --- MQMAS Isotropic projections (F1) δ iso = 16.5 ppm BO 3/ in boroxol rings δ iso = 11.5 ppm free BO 3/ in borate- and mixed borosilicate matrix x(b O 3 )
48 NMR and the structure of glasses more examples --- BSi-glasses Quantum chemical calculations HF SCF; double ζ basis set: 19.3 ppm DFT; triple ζ basis set: 18.5 ppm HF SCF; double ζ basis set: 15. ppm DFT; triple ζ basis set: 1.5 ppm HF SCF; double ζ basis set: 13.0 ppm DFT; triple ζ basis set: 9.5ppm
49 NMR and the structure of glasses more examples --- BSi-glasses --- RE(AP)DOR 9 Si-{ 11 B} REAPDOR Statistical distribution of B in a 0.3 B O SiO glass 1, 1.7 B-neighbors per SiO 4/ 1,0 S/S 0 0,8 0,6 0,4 xb O 3 xsio , 1 B-neighbor per SiO 4/ 0,0 0,000 0,00 0,004 0,006 0,008 NT R /s
50 NMR and the structure of glasses more examples --- B O 3 SiO glasses glass-structure SiO matrix con only adopt a limited amount of B O 3, the limiting composition is 0.3 B O SiO. Excess B O 3 establishes a separate phase. area/% ppm ppm BO 3/ in boroxol rings (1-(1-x)f/x) free BO 3/ (1-(1-x)f/x) 0.3 and BO 3/ in borosilicate phase (1-x)f/x x B O 3
Topic 3: Periodicity OBJECTIVES FOR TODAY: Fall in love with the Periodic Table, Interpret trends in atomic radii, ionic radii, ionization energies &
Topic 3: Periodicity OBJECTIVES FOR TODAY: Fall in love with the Periodic Table, Interpret trends in atomic radii, ionic radii, ionization energies & electronegativity The Periodic Table What is the periodic
More information-"l" also contributes ENERGY. Higher values for "l" mean the electron has higher energy.
175 - Giving the four parameters will uniquely identify an electron around an atom. No two electrons in the same atom can share all four. These parameters are called QUANTUM NUMBERS. PRINCIPAL QUANTUM
More informationORBITAL DIAGRAM - A graphical representation of the quantum number "map" of electrons around an atom.
178 (MAGNETIC) SPIN QUANTUM NUMBER: "spin down" or "spin up" - An ORBITAL (region with fixed "n", "l" and "ml" values) can hold TWO electrons. ORBITAL DIAGRAM - A graphical representation of the quantum
More informationAn introduction to Solid State NMR and its Interactions
An introduction to Solid State NMR and its Interactions From tensor to NMR spectra CECAM Tutorial September 9 Calculation of Solid-State NMR Parameters Using the GIPAW Method Thibault Charpentier - CEA
More information5 questions, 3 points each, 15 points total possible. 26 Fe Cu Ni Co Pd Ag Ru 101.
Physical Chemistry II Lab CHEM 4644 spring 2017 final exam KEY 5 questions, 3 points each, 15 points total possible h = 6.626 10-34 J s c = 3.00 10 8 m/s 1 GHz = 10 9 s -1. B= h 8π 2 I ν= 1 2 π k μ 6 P
More informationORBITAL DIAGRAM - A graphical representation of the quantum number "map" of electrons around an atom.
160 ORBITAL DIAGRAM - A graphical representation of the quantum number "map" of electrons around an atom. 4p 3d 4s 3p 3s 2p 2s 1s Each blank represents an ORBITAL, and can hold two electrons. The 4s subshell
More information-"l" also contributes ENERGY. Higher values for "l" mean the electron has higher energy.
170 - Giving the four parameters will uniquely identify an electron around an atom. No two electrons in the same atom can share all four. These parameters are called QUANTUM NUMBERS. PRINCIPAL QUANTUM
More informationThe Periodic Table. Periodic Properties. Can you explain this graph? Valence Electrons. Valence Electrons. Paramagnetism
Periodic Properties Atomic & Ionic Radius Energy Electron Affinity We want to understand the variations in these properties in terms of electron configurations. The Periodic Table Elements in a column
More informationSpin Cut-off Parameter of Nuclear Level Density and Effective Moment of Inertia
Commun. Theor. Phys. (Beijing, China) 43 (005) pp. 709 718 c International Academic Publishers Vol. 43, No. 4, April 15, 005 Spin Cut-off Parameter of Nuclear Level Density and Effective Moment of Inertia
More informationSolid-state NMR of spin > 1/2
Solid-state NMR of spin > 1/2 Nuclear spins with I > 1/2 possess an electrical quadrupole moment. Anisotropic Interactions Dipolar Interaction 1 H- 1 H, 1 H- 13 C: typically 50 khz Anisotropy of the chemical
More information2 (27) 3 (26) 4 (21) 5 (18) 6 (8) Total (200) Periodic Table
Chem 3311 Sammakia Fall 2009 Midterm 1 Student ID page points: 2 (27) 3 (26) 4 (21) 5 (18) 6 (8) Total (200) Periodic Table e Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn
More informationSpeed of light c = m/s. x n e a x d x = 1. 2 n+1 a n π a. He Li Ne Na Ar K Ni 58.
Physical Chemistry II Test Name: KEY CHEM 464 Spring 18 Chapters 7-11 Average = 1. / 16 6 questions worth a total of 16 points Planck's constant h = 6.63 1-34 J s Speed of light c = 3. 1 8 m/s ħ = h π
More informationBonding/Lewis Dots Lecture Page 1 of 12 Date. Bonding. What is Coulomb's Law? Energy Profile: Covalent Bonds. Electronegativity and Linus Pauling
Bonding/Lewis Dots Lecture Page 1 of 12 Date Bonding What is Coulomb's Law? Energy Profile: Covalent Bonds Electronegativity and Linus Pauling 2.1 H 1.0 Li 0.9 Na 0.8 K 0.8 Rb 0.7 Cs 0.7 Fr 1.5 Be 1.2
More informationCh. 9 NOTES ~ Chemical Bonding NOTE: Vocabulary terms are in boldface and underlined. Supporting details are in italics.
Ch. 9 NOTES ~ Chemical Bonding NOTE: Vocabulary terms are in boldface and underlined. Supporting details are in italics. I. Review: Comparison of ionic and molecular compounds Molecular compounds Ionic
More informationCHEMICAL COMPOUNDS MOLECULAR COMPOUNDS
48 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified
More informationUnit 1 Part 2 Atomic Structure and The Periodic Table Introduction to the Periodic Table UNIT 1 ATOMIC STRUCTURE AND THE PERIODIC TABLE
UNIT 1 ATOMIC STRUCTURE AND THE PERIODIC TABLE PART 2 INTRODUCTION TO THE PERIODIC TABLE Contents 1. The Structure of the Periodic Table 2. Trends in the Periodic Table Key words: group, period, block,
More information- Light has properties of WAVES such as DIFFRACTION (it bends around small obstructions).
170 LIGHT wavelength Diffraction frequency = wavelengths / time = - Light has properties of WAVES such as DIFFRACTION (it bends around small obstructions). - Einstein noted that viewing light as a particle
More information- Atomic line spectra are UNIQUE to each element. They're like atomic "fingerprints".
- Atomic line spectra are UNIQUE to each element. They're like atomic "fingerprints". - Problem was that the current model of the atom completely failed to explain why atoms emitted these lines. An orbit
More informationReporting Category 1: Matter and Energy
Name: Science Teacher: Reporting Category 1: Matter and Energy Atoms Fill in the missing information to summarize what you know about atomic structure. Name of Subatomic Particle Location within the Atom
More informationmaterials and their properties
materials and their properties macroscopic properties phase state strength / stiffness electrical conductivity chemical properties color / transparence spectroscopical properties surface properties density
More informationNuclear Magnetic Resonance (NMR)
Nuclear Magnetic Resonance (NMR) Nuclear Magnetic Resonance (NMR) The Nuclear Magnetic Resonance Spectroscopy (NMR) is one of the most important spectroscopic methods to explore the structure and dynamic
More informationCHEMICAL COMPOUNDS MOLECULAR COMPOUNDS
48 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified
More informationLewis dot structures for molecules
1 Lewis dot structures for molecules In the dot structure of a molecule, - SHARED valence electrons are shown with dashes - one per pair. - UNSHARED valence electrons ("lone pairs") are represented by
More informationCHEM 130 Exp. 8: Molecular Models
CHEM 130 Exp. 8: Molecular Models In this lab, we will learn and practice predicting molecular structures from molecular formulas. The Periodic Table of the Elements IA 1 H IIA IIIA IVA VA VIA VIIA 3 5
More informationNucleus. Electron Cloud
Atomic Structure I. Picture of an Atom Nucleus Electron Cloud II. Subatomic particles Particle Symbol Charge Relative Mass (amu) protons p + +1 1.0073 neutrons n 0 1.0087 electrons e - -1 0.00054858 Compare
More informationChemistry 31A Autumn 2004 Professors Chidsey & Zare Exam 2 Name:
Chemistry 31A Autumn 2004 Professors Chidsey & Zare Exam 2 Name: SUNetID: @stanford.edu Honor Code Observed: (Signature) Circle your section 9:00am 10:00am 2:15pm 3:15pm 7:00pm 8:00pm S02 OC103 S04 OC103
More informationLast 4 Digits of USC ID:
Chemistry 05 B Practice Exam Dr. Jessica Parr First Letter of last Name PLEASE PRINT YOUR NAME IN BLOCK LETTERS Name: Last 4 Digits of USC ID: Lab TA s Name: Question Points Score Grader 8 2 4 3 9 4 0
More information610B Final Exam Cover Page
1 st Letter of Last Name NAME: 610B Final Exam Cover Page No notes or calculators of any sort allowed. You have 3 hours to complete the exam. CHEM 610B, 50995 Final Exam Fall 2003 Instructor: Dr. Brian
More informationVIIIA H PREDICTING CHARGE
58 IA PREDICTING CHARGE VIIIA H IIA IIIA IVA VA VIA VIIA You can reliably determine the charge using our method for Groups IA, IIA, IIIB, Aluminum, and the Group VA, VIA, and VIIA NONMETALS Li Be B C N
More informationNAME (please print) MIDTERM EXAM FIRST LAST JULY 13, 2011
CEMISTRY 140A NAME (please print) MIDTERM EXAM IRST LAST JULY 13, 2011 SIGNATURE Vollhardt & Schore 6 th Edition Cp. 1 through 5 ID NUMBER LAST NAME PERSN SEATED IN T YUR RIGT: LAST NAME PERSN SEATED T
More informationElement Cube Project (x2)
Element Cube Project (x2) Background: As a class, we will construct a three dimensional periodic table by each student selecting two elements in which you will need to create an element cube. Helpful Links
More informationDirect dipolar interaction - utilization
Direct dipolar interaction - utilization Two main uses: I: magnetization transfer II: probing internuclear distances Direct dipolar interaction - utilization Probing internuclear distances ˆ hetero D d
More informationSolutions and Ions. Pure Substances
Class #4 Solutions and Ions CHEM 107 L.S. Brown Texas A&M University Pure Substances Pure substance: described completely by a single chemical formula Fixed composition 1 Mixtures Combination of 2 or more
More informationCLASS TEST GRADE 11. PHYSICAL SCIENCES: CHEMISTRY Test 4: Matter and materials 1
CLASS TEST GRADE PHYSICAL SCIENCES: CHEMISTRY Test 4: Matter and materials MARKS: 45 TIME: hour INSTRUCTIONS AND INFORMATION. Answer ALL the questions. 2. You may use non-programmable calculators. 3. You
More informationNMR spectroscopy. Matti Hotokka Physical Chemistry Åbo Akademi University
NMR spectroscopy Matti Hotokka Physical Chemistry Åbo Akademi University Angular momentum Quantum numbers L and m (general case) The vector precesses Nuclear spin The quantum numbers are I and m Quantum
More informationNAME: FIRST EXAMINATION
1 Chemistry 64 Winter 1994 NAME: FIRST EXAMINATION THIS EXAMINATION IS WORTH 100 POINTS AND CONTAINS 4 (FOUR) QUESTIONS THEY ARE NOT EQUALLY WEIGHTED! YOU SHOULD ATTEMPT ALL QUESTIONS AND ALLOCATE YOUR
More informationChapter 3: Elements and Compounds. 3.1 Elements
Chapter 3: Elements and Compounds 3.1 Elements An element is a fundamental substance that cannot be broken down by chemical or physical methods to simpler substances. The 118 known elements are nature
More informationVIIIA H PREDICTING CHARGE
58 IA PREDICTING CHARGE VIIIA H IIA IIIA IVA VA VIA VIIA You can reliably determine the charge using our method for Groups IA, IIA, IIIB, Aluminum, and the Group VA, VIA, and VIIA NONMETALS Li Be B C N
More informationChem 325 NMR Intro. The Electromagnetic Spectrum. Physical properties, chemical properties, formulas Shedding real light on molecular structure:
Physical properties, chemical properties, formulas Shedding real light on molecular structure: Wavelength Frequency ν Wavelength λ Frequency ν Velocity c = 2.998 10 8 m s -1 The Electromagnetic Spectrum
More information03/06/2014. In Glasses, which lack long-range structure completely, this idea works even better!
Composition Structure Property Correlations In Glasses and Glass Ceramics In Glasses, which lack long-range structure completely, this idea works even better! Hellmut Eckert Instituto da Física Sao Carlos
More informationLaser Spectroscopy on Bunched Radioactive Ion Beams
Laser Spectroscopy on Bunched Radioactive Ion Beams Jon Billowes University of Manchester Balkan School on Nuclear Physics, Bodrum 2004 Lecture 1. 1.1 Nuclear moments 1.2 Hyperfine interaction in free
More informationCourse theme. Three hours of lab Complete E1 (Parts 1, 2, 3, 4, and 5B) Prepare discussion presentation Prepare team report.
Experiment Session 2 Electrons and Solution Color Three hours of lab Complete E (Parts, 2, 3, 4, and 5B) Prepare discussion presentation Prepare team report. Course theme There are structure and property
More informationThree hours of lab Complete E1 (Parts 1, 2, 3, 4, and 5B) Prepare discussion presentation Prepare team report. Course theme
Experiment 1 Session 2 Electrons and Solution Color Three hours of lab Complete E1 (Parts 1, 2, 3, 4, and 5B) Prepare discussion presentation Prepare team report. Course theme There are structure and property
More informationMicrosoft Excel Directions
Microsoft Excel Directions 1. Working in groups of two, log onto a computer. 2. Create a folder on the desktop a. Right click anywhere on the desktop new folder Name the folder Chemistry 3. Open MS Excel
More informationEXAMPLES. He VIA VIIA Li Be B C N O F Ne
59 IA EXAMPLES VIIIA H IIA IIIA IVA VA He VIA VIIA Li Be B C N O F Ne Na Mg IIIB IVB VB Al Si P VIB VIIB VIIIB IB IIB S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru
More informationD = kt/6 a. d /2D. For sucrose/h 2O, we have D = 0.521X10
600 400 200 0-200 -400 M 0 M 0 D D = kt/6a 2 d /2D a d a For sucrose/h 2O, we have D = 0.521X10-5 cm 2-1 s, then -13 d = 1 nm -11 d = 10 nm NMR frequency ~ 10 8 Hz All spin interactions become isotropic
More informationAll chemical bonding is based on the following relationships of electrostatics: 2. Each period on the periodic table
UNIT VIII ATOMS AND THE PERIODIC TABLE 25 E. Chemical Bonding 1. An ELECTROSTATIC FORCE is All chemical bonding is based on the following relationships of electrostatics: The greater the distance between
More informationMade the FIRST periodic table
Made the FIRST periodic table 1869 Mendeleev organized the periodic table based on the similar properties and relativities of certain elements Later, Henri Moseley organized the elements by increasing
More informationWRITING AN IONIC FORMULA
WRITING AN IONIC FORMULA - if you know the ions that make up a compound, all you need to do is find the smallest ratio of cation to anion the compound needs to have an overall charge of zero Example: If
More informationExample: If a simple ionic compound is made of these two ions, what is its formula? In the final formula, don't write the charges on the ions!
88 WRITING AN IONIC FORMULA - if you know the ions that make up a compound, all you need to do is find the smallest ratio of cation to anion the compound needs to have an overall charge of zero Example:
More information- Why are phase labels required? Because phase changes either absorb or release energy. ... what does this mean?
157 SINCE the enthalpy change does NOT depend on path, this means that we can use standard values for enthalpy to predict the heat change in reactions that we have not tested in a calorimeter. THERMOCHEMICAL
More informationCHEMICAL COMPOUNDS MOLECULAR COMPOUNDS
48 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified
More informationUsing the Periodic Table
MATH SKILLS TRANSPARENCY WORKSHEET Using the Periodic Table 6 Use with Chapter 6, Section 6.2 1. Identify the number of valence electrons in each of the following elements. a. Ne e. O b. K f. Cl c. B g.
More informationExample: Helium has an atomic number of 2. Every helium atom has two protons in its nucleus.
59 Atomic terms - ATOMIC NUMBER: The number of protons in the atomic nucleus. Each ELEMENT has the SAME NUMBER OF PROTONS in every nucleus. In neutral atoms, the number of ELECTRONS is also equal to the
More informationHow many grams of sodium metal is required to completely react with 2545 grams of chlorine gas?
EXAMPLE PROBLEM: How many grams of sodium metal is required to completely react with 2545 grams of chlorine gas? 1 - Convert 2545 grams of chlorine to moles chlorine using formula weight 2 - Convert moles
More informationPERIODIC TABLE OF THE ELEMENTS
Useful Constants and equations: K = o C + 273 Avogadro's number = 6.022 x 10 23 d = density = mass/volume R H = 2.178 x 10-18 J c = E = h = hc/ h = 6.626 x 10-34 J s c = 2.998 x 10 8 m/s E n = -R H Z 2
More information6 NMR Interactions: Zeeman and CSA
6 NMR Interactions: Zeeman and CSA 6.1 Zeeman Interaction Up to this point, we have mentioned a number of NMR interactions - Zeeman, quadrupolar, dipolar - but we have not looked at the nature of these
More information7. Relax and do well.
CHEM 1215 Exam II John II. Gelder October 7, 1998 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 5 different pages. The last page includes a periodic table and a solubility
More informationNAME: SECOND EXAMINATION
1 Chemistry 64 Winter 1994 NAME: SECOND EXAMINATION THIS EXAMINATION IS WORTH 100 POINTS AND CONTAINS 4 (FOUR) QUESTIONS THEY ARE NOT EQUALLY WEIGHTED! YOU SHOULD ATTEMPT ALL QUESTIONS AND ALLOCATE YOUR
More informationPART 1 Introduction to Theory of Solids
Elsevier UK Job code: MIOC Ch01-I044647 9-3-2007 3:03p.m. Page:1 Trim:165 240MM TS: Integra, India PART 1 Introduction to Theory of Solids Elsevier UK Job code: MIOC Ch01-I044647 9-3-2007 3:03p.m. Page:2
More informationHow many grams of sodium metal is required to completely react with 2545 grams of chlorine gas?
146 EXAMPLE PROBLEM: How many grams of sodium metal is required to completely react with 2545 grams of chlorine gas? 1 - Convert 2545 grams of chlorine gas to moles. Use formula weight. 2 - Convert moles
More informationCHEM 10113, Quiz 5 October 26, 2011
CHEM 10113, Quiz 5 October 26, 2011 Name (please print) All equations must be balanced and show phases for full credit. Significant figures count, show charges as appropriate, and please box your answers!
More informationGuide to the Extended Step-Pyramid Periodic Table
Guide to the Extended Step-Pyramid Periodic Table William B. Jensen Department of Chemistry University of Cincinnati Cincinnati, OH 452201-0172 The extended step-pyramid table recognizes that elements
More informationAtomic weight: This is a decimal number, but for radioactive elements it is replaced with a number in parenthesis.
47 Blocks on the periodic table 11 Sodium 22.99 Atomic number: This is always a whole number. The periodic table is arranged by atomic number! Element symbol: A one or two letter abbreviation for the name
More information8. Relax and do well.
CHEM 1215 Exam III John III. Gelder November 11, 1998 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 7 different pages. The last page includes a periodic table and
More information(please print) (1) (18) H IIA IIIA IVA VA VIA VIIA He (2) (13) (14) (15) (16) (17)
CHEM 10113, Quiz 3 September 28, 2011 Name (please print) All equations must be balanced and show phases for full credit. Significant figures count, show charges as appropriate, and please box your answers!
More informationWRITING AN IONIC FORMULA
55 WRITING AN IONIC FORMULA - if you know the ions that make up a compound, all you need to do is find the smallest ratio of cation to anion the compound needs to have an overall charge of zero Example:
More informationMANY ELECTRON ATOMS Chapter 15
MANY ELECTRON ATOMS Chapter 15 Electron-Electron Repulsions (15.5-15.9) The hydrogen atom Schrödinger equation is exactly solvable yielding the wavefunctions and orbitals of chemistry. Howev er, the Schrödinger
More informationWRITING AN IONIC FORMULA
55 WRITING AN IONIC FORMULA - if you know the ions that make up a compound, all you need to do is find the smallest ratio of cation to anion the compound needs to have an overall charge of zero Example:
More information02/05/09 Last 4 Digits of USC ID: Dr. Jessica Parr
Chemistry 05 B First Letter of PLEASE PRINT YOUR NAME IN BLOCK LETTERS Exam last Name Name: 02/05/09 Last 4 Digits of USC ID: Dr. Jessica Parr Lab TA s Name: Question Points Score Grader 2 2 9 3 9 4 2
More informationAtoms and the Periodic Table
Atoms and the Periodic Table Parts of the Atom Proton Found in the nucleus Number of protons defines the element Charge +1, mass 1 Parts of the Atom Neutron Found in the nucleus Stabilizes the nucleus
More informationChapter 3: Stoichiometry
Chapter 3: Stoichiometry Chem 6A Michael J. Sailor, UC San Diego 1 Announcements: Thursday (Sep 29) quiz: Bring student ID or we cannot accept your quiz! No notes, no calculators Covers chapters 1 and
More informationPutting it together... - In the early 20th century, there was a debate on the structure of the atom. Thin gold foil
36 Putting it together... - In the early 20th century, there was a debate on the structure of the atom. RUTHERFORD EXPERIMENT Where do the particles go? Radioactive material A few bounce back A few particles
More informationSecondary Support Pack. be introduced to some of the different elements within the periodic table;
Secondary Support Pack INTRODUCTION The periodic table of the elements is central to chemistry as we know it today and the study of it is a key part of every student s chemical education. By playing the
More information... but using electron configurations to describe how aluminum bromide forms is a bit cumbersome! Can we simplify the picture a bit?
193... but using electron configurations to describe how aluminum bromide forms is a bit cumbersome! Can we simplify the picture a bit? LEWIS NOTATION / ELECTRON-DOT NOTATION - Lewis notation represents
More information100% ionic compounds do not exist but predominantly ionic compounds are formed when metals combine with non-metals.
2.21 Ionic Bonding 100% ionic compounds do not exist but predominantly ionic compounds are formed when metals combine with non-metals. Forming ions Metal atoms lose electrons to form +ve ions. Non-metal
More information8. Relax and do well.
CHEM 1314 3;30 pm Theory Exam III John III. Gelder November 13, 2002 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 8 different pages. The last page include a periodic
More informationCHEM 172 EXAMINATION 1. January 15, 2009
CHEM 17 EXAMINATION 1 January 15, 009 Dr. Kimberly M. Broekemeier NAME: Circle lecture time: 9:00 11:00 Constants: c = 3.00 X 10 8 m/s h = 6.63 X 10-34 J x s J = kg x m /s Rydberg Constant = 1.096776 x
More informationPeriodic Table. - Mendeleev was able to predict the properties of previously unknown elements using his "periodic law" Modern periodic table
74 Periodic Table - Mendeleev (1869): --- When atoms are arranged in order of their atomic weight, some of their chemical and physical properties repeat at regular intervals (periods) --- Some of the physical
More information(C) Pavel Sedach and Prep101 1
(C) Pavel Sedach and Prep101 1 (C) Pavel Sedach and Prep101 1 (C) Pavel Sedach and Prep101 2 (C) Pavel Sedach and Prep101 2 (C) Pavel Sedach and Prep101 3 (C) Pavel Sedach and Prep101 3 (C) Pavel Sedach
More informationנושא מס' 8: המבנה האלקטרוני של אטומים. Electronic Structure of Atoms. 1 Prof. Zvi C. Koren
נושא מס' 8: המבנה האלקטרוני של אטומים Electronic Structure of Atoms 1 Prof. Zvi C. Koren 19.07.10 The Electron Spin From further experiments, it was evident that the e had additional magnetic properties
More information8. Relax and do well.
CHEM 1515 Exam II John II. Gelder October 14, 1993 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 8 different pages. The last two pages include a periodic table, a
More informationReporting Category 1: Matter and Energy
Name: Science Teacher: Reporting Category 1: Matter and Energy Atoms 8.5A Fill in the missing information to summarize what you know about atomic structure. Name of Subatomic Particle Location within the
More informationM09/4/CHEMI/SPM/ENG/TZ1/XX+ CHEMISTRY. Monday 18 May 2009 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES
M09/4/CHEMI/SPM/ENG/TZ1/XX+ 22096110 CHEMISTRY standard level Paper 1 Monday 18 May 2009 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES Do not open this examination paper until instructed to do so.
More informationAtomic weight: This is a decimal number, but for radioactive elements it is replaced with a number in parenthesis.
47 Blocks on the periodic table 11 Sodium 22.99 Atomic number: This is always a whole number. The periodic table is arranged by atomic number! Element symbol: A one or two letter abbreviation for the name
More informationChem 112, Fall 05 Exam 2a
Name: YOU MUST: Put your name and student ID on the bubble sheet correctly. Put all your answers on the bubble sheet. Please sign the statement on the last page of the exam. Please make sure your exam
More informationCHEMICAL COMPOUNDS. - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds!
69 CHEMICAL COMPOUNDS - Dalton's theory does not mention this, but there is more than one way for atoms to come together to make chemical compounds! - There are TWO common kinds of chemical compound, classified
More informationINSTRUCTIONS: Exam III. November 10, 1999 Lab Section
CHEM 1215 Exam III John III. Gelder November 10, 1999 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 7 different pages. The last page includes a periodic table and
More information1 Electrons and Chemical Bonding
CHAPTER 13 1 Electrons and Chemical Bonding SECTION Chemical Bonding BEFORE YOU READ After you read this section, you should be able to answer these questions: What is chemical bonding? What are valence
More informationCHEM Come to the PASS workshop with your mock exam complete. During the workshop you can work with other students to review your work.
It is most beneficial to you to write this mock midterm UNDER EXAM CONDITIONS. This means: Complete the midterm in 1.5 hours. Work on your own. Keep your notes and textbook closed. Attempt every question.
More informationlectures accompanying the book: Solid State Physics: An Introduction, by Philip ofmann (2nd edition 2015, ISBN-10: 3527412824, ISBN-13: 978-3527412822, Wiley-VC Berlin. www.philiphofmann.net 1 Bonds between
More information4.1 Atomic structure and the periodic table. GCSE Chemistry
4.1 Atomic structure and the periodic table GCSE Chemistry All substances are made of atoms this is cannot be chemically broken down it is the smallest part of an element. Elements are made of only one
More informationE5 Lewis Acids and Bases: lab 2. Session two lab Parts 2B, 3, and 4. Session one lab Parts 1and 2A. Aquo Complex Ions
E5 Lewis Acids and Bases: lab 2 Session one lab Parts 1and 2A Session two lab Parts 2B, 3, and 4 Part 2B. Complexation, Structure and Periodicity Compare the reactivity of aquo complex ions containing
More informationThe Periodic Table of Elements
The Periodic Table of Elements 8 Uuo Uus Uuh (9) Uup (88) Uuq (89) Uut (8) Uub (8) Rg () 0 Ds (9) 09 Mt (8) 08 Hs (9) 0 h () 0 Sg () 0 Db () 0 Rf () 0 Lr () 88 Ra () 8 Fr () 8 Rn () 8 At (0) 8 Po (09)
More informationRadiometric Dating (tap anywhere)
Radiometric Dating (tap anywhere) Protons Neutrons Electrons Elements on the periodic table are STABLE Elements can have radioactive versions of itself called ISOTOPES!! Page 1 in your ESRT has your list!
More informationThree hour lab. Chem : Sept Experiment 2 Session 2. Preparation Pre-lab prep and reading for E2, Parts 3-5
Chem.25-26: Sept.24-3 Experiment 2 Session 2 Preparation Pre-lab prep and reading for E2, Parts 3-5 Experiment 2 Session 2 Electrons and Solution Color Three hour lab Complete E2 (Parts - 5) Prepare discussion
More information[ ]:543.4(075.8) 35.20: ,..,..,.., : /... ;. 2-. ISBN , - [ ]:543.4(075.8) 35.20:34.
.. - 2-2009 [661.87.+661.88]:543.4(075.8) 35.20:34.2373-60..,..,..,..,.. -60 : /... ;. 2-. : -, 2008. 134. ISBN 5-98298-299-7 -., -,,. - «,, -, -», - 550800,, 240600 «-», -. [661.87.+661.88]:543.4(075.8)
More informationAtomic Structure & Interatomic Bonding
Atomic Structure & Interatomic Bonding Chapter Outline Review of Atomic Structure Atomic Bonding Atomic Structure Atoms are the smallest structural units of all solids, liquids & gases. Atom: The smallest
More informationThe Periodic Table of the Elements
The Periodic Table of the Elements All matter is composed of elements. All of the elements are composed of atoms. An atom is the smallest part of an element which still retains the properties of that element.
More informationFormulas and Constants (you may remove this page)
Formulas and Constants (you may remove this page) NA = 6.0x0 3 mol - h = 6.66x0-34 J s c =.99x0 m s - e =.60x0-9 C me = 9.09x0-3 kg Å = x0-0 m = 00 pm atm = 760 torr R = 0.006 L atm K - mol - =.34 J K
More information