Boranes as Z-type Ligands for Transition Metal Complexes. 2015/2/11 Zhi Ren
|
|
|
- Kellie Chapman
- 6 years ago
- Views:
Transcription
1 Boranes as Z-type Ligands for Transition Metal Complexes 2015/2/11 Zhi Ren
2 Overview 1. Introduction 2. Metal complexes 3. Catalytic reactions 4. Brief summary
3 1. Introduction 1.1. Borane ligands 1.2. Z-type ligands 1.3. Electronegativities 1.4. Electron count for Z type ligands
4 1.1. Borane ligands Braunschweig, H. et al Chem. Rev. 2010, 110, For boryl metal complexes: Irvine, G.J. et al Chem. Rev. 1998, 98, 2685.
5 1.1. Borane ligands Braunschweig, H. et al Chem. Rev. 2010, 110, For boryl metal complexes: Irvine, G.J. et al Chem. Rev. 1998, 98, 2685.
6 1.1. Borane ligands Summary of known boron-metal complexes Braunschweig, H. et al Chem. Rev. 2010, 110, 3924.
7 1.2. Z-type ligands Three type of metal-ligand interactions For review: Amgoune, A.; Bourissou, D. Chem. Commun. 2011, 47, 859.
8 1.2. Z-type ligands Unsupported M Z interactions For review: Amgoune, A.; Bourissou, D. Chem. Commun. 2011, 47, 859.
9 1.2. Z-type ligands Supported M Z interactions: borane ligands For review: Amgoune, A.; Bourissou, D. Chem. Commun. 2011, 47, 859.
10 1.2. Z-type ligands Supported M Z interactions: other ligands For review: Amgoune, A.; Bourissou, D. Chem. Commun. 2011, 47, 859.
11 1.3. Electronegativities Gold: Give me your electrons! Boron: Sorry I don t have any left
12 1.4. Electron count for Z-type ligands d n configuration, L = 0, X = -1, Z = -2. Electron counting L= +2, X= +1, Z = 0. Parkin, G. Organometallics 2006, 25, 4744.
13 2. Metal complexes 2.1. Historical view In 1963 Shriver reported a metal-boron dative complex [Cp 2 WH 2 (BF 3 )]. Shriver, D.F. J. Am. Chem. Soc. 1963, 85, 3509 Shriver, D.F. Acc. Chem. Res. 1970, 3, 231
14 2. Metal complexes 2.1. Historical view In 1979, Hughes reported the complex that contains a metal boron dative bond. Burlitch, J.M. et al Inorg. Chem. 1979, 18, 1702.
15 2. Metal complexes 2.1. Historical view Until 1999, Hill s group reported the first metal-borane complex. Hill, A.F. et al Angew. Chem. Int. Ed. 1999, 38, 2759.
16 2. Metal complexes (i) excess CO; (ii) K[Tm Me ], CH 2 Cl 2 ; (iii) Na[Tm Me ]; (iv) Na[Tm Me ]; (v) PPh 3 ; (vi) excess CO; (vii) CNtBu; (viii) CNXyl;(ix) CNMes. Braunschweig, H. et al Chem. Rev. 2010, 110, 3924.
17 2. Metal complexes (i) Na[Bm Me ]; (ii) room temperature; (iii) Na[Tm Me ]/K[Tm tbu ]/Tl[Tm tbu ]/Li[Tm Ph ]. An asterisk denotes complexes that were detected but not isolated. Braunschweig, H. et al Chem. Rev. 2010, 110, 3924.
18 2. Metal complexes (i) Na[Tm Me ]; (ii) room temperature; (iii) Na[Tm Me ]; (iv) refluxing CH 2 Cl 2 /ethanol (20:1); (v) CNtBu; (vi) CNXyl; (vii) CNMes; (viii) PMe 3 ; (ix) excess PMe 3, refluxing CH 2 Cl 2 /THF (10:1); (x) Na[S 2 CNEt 2 ]; (xi) M ) Rh, K[Tm tbu ]; (xii) M ) Ir, K[Tm tbu ] Braunschweig, H. et al Chem. Rev. 2010, 110, 3924.
19 2. Metal complexes (i) K[Tm tbu ]; (ii) K[Tm tbu ]; (iii) PMe 3 ; (iv) Tl[OAc]; (v) K[SCN]; (vi) Na[N 3 ]; (vii) DBU; (viii) HCl; (ix) Na[Tm Me ]; (x) Na[Tm Me ]; (xi) room temperature; (xii) Cl 2 ; (xiii) Br 2 ; (xiv) I 2 ; (xv) MeI. Chemical Reviews 2010, 110, 3924.
20 2. Metal complexes 11 B NMR Au-B bond Ligand Complex distance 2.13a 75.6 ppm 80.1 ppm b 64.5 ppm 55.2 ppm 2.663(8) Bontemps, S. et al J. Am. Chem. Soc. 2006, 128,
21 2. Metal complexes (i) [RhCl(NBD)] 2 (0.5 equiv); (ii) DMAP; (iii) [RhCl(CO) 2 ] 2 (0.5 equiv); (iv) [MCl 2 (cod)] (M = Pd, Pt); (v) [AuCl(SMe 2 )]. Braunschweig, H. et al Chem. Rev. 2010, 110, 3924.
22 2. Metal complexes (i) [Ni(cod) 2 ]; (ii) [Pd(PtBu 3 ) 2 ]; (iii) [Pt(PtBu 3 ) 2 ]; (iv)cucl; (v) AgCl; (vi) [AuCl(SMe 2 )]; (vii) GaCl 3. Braunschweig, H. et al Chem. Rev. 2010, 110, 3924.
23 2. Metal complexes (i) excess CO; (ii) CNXyl; (iii) CNtBu. Braunschweig, H. et al Chem. Rev. 2010, 110, 3924.
24 2. Metal complexes (i) CHCl 3 ; (ii) CHBr 3 ; (iii) [PhC(O)O] 2 ; (iv) CHCl 3 /I 2 ; (v) XeF 2 ; (vi) I 2. Braunschweig, H. et al Chem. Rev. 2010, 110, 3924.
25 2. Metal complexes Braunschweig, H.; Dewhurst, R.D. Dalton Trans. 2011, 40, 549.
26 2. Metal complexes Braunschweig, H.; Dewhurst, R.D. Dalton Trans. 2011, 40, 549.
27 2. Metal complexes old Braunschweig, H.; Dewhurst, R.D. Dalton Trans. 2011, 40, 549.
28 3. Reaction 1. Transfer hydrogenation of ketones 2. Hydrogenation of alkenes 3. Reduction of nitrogen to ammonia
29 3. Reactions Owen, G. et al Dalton Trans. 2008, 6039.
30 3. Reactions Kameo, H.; Nakazawa, H. Organometallics 2012, 31, 7476.
31 3. Reactions Owen, G. et al Organometallics 2009, 28, 5222.
32 3. Reactions Owen, G. et al Chem. Commun. 2011, 47, 484.
33 3. Reactions Harman, W.H.; Peters, J.C. J. Am. Chem. Soc. 2012, 134, 5080.
34 3. Reactions Peters, J. et al Organometallics 2013, 32, 3053.
35 3. Reactions Moret, M.E.; Peters, J.C. Angew. Chem. Int. Ed. 2011, 50, 2063.
36 3. Reactions Moret, M.E.; Peters, J.C. J. Am. Chem. Soc. 2011, 133,
37 3. Reactions Peters, J. et al Nature 2013, 501, 84.
38 3. Reactions Peters, J. et al Nature 2013, 501, 84.
39 3. Reactions Creutz, S.E.; Peters, J.C. J. Am. Chem. Soc. 2014, 136, 1105.
40 4. Brief summary 1. This field is re-established in The metal complexes with late TM are reported. 3. To my knowledge there are three type catalytic reactions: transfer hydrogenation of ketones, hydrogenation of alkenes and alkynes, and reduction of nitrogen to ammonia.
41 Be NMR-tube-philic! Thanks!
42 Question time! Question 1 Propose a mechanism for the hydrogenation of ketone with complex 5:
43 Question time! Question 2 Silicon can also be a lewis acid, and it has similar effect as borone when coordinate to metal. Complete the following transformation:
44 Question time! Question 3 Propose a possible mechanism for the transformation of 5 to 6A.
45 Question 1
46 Question 2
47 Question 3
Organometallic Chemistry and Homogeneous Catalysis
Organometallic Chemistry and Homogeneous Catalysis Dr. Alexey Zazybin Lecture N6 Kashiwa Campus, November 27, 2009 Group VIB: Cr, Mo, W -Oxidation states from -2 to +6 -While +2 and +3 for Cr are quite
Metal Hydrides, Alkyls, Aryls, and their Reactions
Metal Hydrides, Alkyls, Aryls, and their Reactions A Primer on MO Theory σ-bonding in Organotransition Metal Complexes M-C Bond Energies in Organotransition Metal Complexes Thermodynamic Predictions
Part I. Multiple choice. Circle the correct answer for each problem. 3 points each
CHEM 100 Name Exam 1 Summer 2010 Part I. Multiple choice. Circle the correct answer for each problem. 3 points each 1. The observation that 20 g of hydrogen gas always combines with 160 g of oxygen gas
Chemistry 233 Exam 3 (Green) The Periodic Table
Name: Last First MI Chemistry Exam (Green) Summer 7 Dr. J. sbourn Instructions: The first questions of this exam should be answered on the provided Scantron. You must use a pencil for filling in the Scantron
Chapter 2: Acids and Bases
1. Which of the following statements is a correct definition for a Brønsted-Lowry acid? A) Proton acceptor C) Electron pair acceptor B) Electron pair donor D) Proton donor 2. Which of the following statements
Cork Institute of Technology. Autumn 2005 Chemistry (Time: 3 Hours)
Cork Institute of Technology Higher Certificate in Science in Applied Biology Stage 1 (National Certificate in Science in Applied Biology Stage 1) (NFQ Level 6) Autumn 2005 Chemistry (Time: 3 Hours) Instructions
CHAPTER 12 CHEMICAL BONDING
Chemistry Name Hour Chemistry Approximate Timeline Students are expected to keep up with class work when absent. CHAPTER 12 CHEMICAL BONDING Day Plans for the day Assignment(s) for the day 1 Begin Chapter
*Assignments could be reversed. *
Name Key 5 W-Exam No. Page I. (6 points) Identify the indicated pairs of hydrogens in each of the following compounds as (i) homotopic, (ii) enantiotopic, or (iii) diastereotopic s. Write the answers as
CHEM 101 Fall 08 Exam III(a)
CHEM 101 Fall 08 Exam III(a) On the answer sheet (scantron) write you name, student ID number, and recitation section number. Choose the best (most correct) answer for each question and enter it on your
Exam I 19 April 2004 Name:
Chem 317 S04 Page 1 of 7 Kantorowski Exam I 19 April 2004 Name: This exam contains 6 pages of questions confirm this once you begin The last page is a spectral data table that can be removed You will have
Name: Period: Date: UNIT 12: Solutions Lesson 2: Electronegativity and Polarity!
Name: Period: Date: UNIT 12: Solutions Lesson 2: Electronegativity and Polarity! By the end of today, you will have an answer to: What is electronegativity and how does it lead to molecules being polar
CHEM 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
CHEMISTRY 135 REVISION OF NAMES, FORMULAE AND EQUATIONS
CHEMISTRY 135 REVISION OF NAMES, FORMULAE AND EQUATIONS Answer the following questions as if you were going to hand them in for marking. You will be tested on them in class time. 1) Give the correct chemical
Charge Chant Song: +1, +2, +3, mixed, -3, -2, -1, 0 +2 in the middle, unless they tell you otherwise
Ch. 4 NOTES ~ Formation of Compounds NOTE: Vocabulary terms are in boldface and underlined. Supporting details are in italics. I. Periodic Table Review layout of the groups and periods, staircase, seven
All 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
Chem 634. Introduction to Transition Metal Catalysis. Reading: Heg Ch 1 2 CS-B 7.1, , 11.3 Grossman Ch 6
Chem 634 Introduction to Transition etal Catalysis eading: eg Ch 1 2 CS-B 7.1, 8.2 8.3, 11.3 Grossman Ch 6 Announcements Problem Set 1 due Thurs, 9/24 at beginning of class ffice our: Wed, 10:30-12, 220
Chap 14, Aqueous Equilibria, Acids & Bases
Chap 14, Aqueous Equilibria, Acids & Bases This chapter is an extension of the equilibrium chapter primarily to rxns. involving the transfer of H + ions in aqueous soln. I. Acid-Base Concepts: Brønsted-Lowry
Electrophilic Carbenes
Electrophilic Carbenes The reaction of so-called stabilized diazo compounds with late transition metals produces a metal carbene intermediate that is electrophilic. The most common catalysts are Cu(I)
1. What is the formula for the compound formed by calcium and nitrogen?
IB Chem 1 Name Topic 4 Bonding - Sample Test Problems 1. What is the formula for the compound formed by calcium and nitrogen? A. CaN B. Ca 2 N C. Ca 2 N 3 D. Ca 3 N 2 2. Element X is in group 2, and element
Partial Periodic Table
Easily Legible Printed Name: CHEM 3451, Spring 2018 Professor Walba Second Hour Exam March 13, 2018 scores: 1) 2) 3) 4) 5) CU Honor Code Pledge: On my honor, as a University of Colorado at Boulder Student,
Rachel Whittaker Dong Group Literature Talk October 10, Ref: Perez-Temprano, M.H, Casares, J.A., Espinet, P., Chem. Eur. J. 2012, 18, 1864.
Rachel Whittaker Dong Group Literature Talk October 10, 2013 Ref: Perez-Temprano, M.H, Casares, J.A., Espinet, P., Chem. Eur. J. 2012, 18, 1864. Overview Introduction Group Exchange C-C Bond Forming Reactions
1. Following Dalton s Atomic Theory, 2. In 1869 Russian chemist published a method. of organizing the elements. Mendeleev showed that
20 CHEMISTRY 11 D. Organizing the Elements The Periodic Table 1. Following Dalton s Atomic Theory, By 1817, chemists had discovered 52 elements and by 1863 that number had risen to 62. 2. In 1869 Russian
a. Why do the amides coordinate to Zr and the phosphines to Co?
Reactivity and Bonding of mplexes with Metal-Metal Bonds Goals: Determine electron counts and oxidation states of complexes with M-M bonds using CBC method of electron counting Draw molecular orbital diagrams
Supporting Information
Supporting Information Selective Synthesis of [6]-, [8]-, and [10]Cycloparaphenylenes Eiichi Kayahara, 1,2 Takahiro Iwamoto, 1 Toshiyasu Suzuki, 2,3 and Shigeru Yamago* 1,2 1 Institute for Chemical Research,
Carbon Compounds. Chemical Bonding Part 2
Carbon Compounds Chemical Bonding Part 2 Introduction to Functional Groups: Alkanes! Alkanes Compounds that contain only carbons and hydrogens, with no double or triple bonds.! Alkyl Groups A part of a
1. Which of the following compounds is the weakest base?
I. Multiple-choice Questions Fall 2018 1. Which of the following compounds is the weakest base? a. C3C2 b. C3C2 c. N3 d. C3 e. N2 2. Which of the following functional groups is indicated by a strong and
TOPIC 13 ANSWERS & MARK SCHEMES QUESTIONSHEET 1 ALKANES
QUESTIONSHEET 1 ALKANES a) (i) UV light / temperatures > 500 ºC (ii) CH 4 (g) + Cl 2 (g) Cl(g) + HCl(g) Cl(g) + Cl 2 (g) Cl 2 (l) + HCl(g) Cl 2 (l) + Cl 2 (g) CHCl 3 (l) + HCl(g) CHCl 3 (l) + Cl 2 (g)
Review Package #3 Atomic Models and Subatomic Particles The Periodic Table Chemical Bonding
Chemistry 11 Review Package #3 Atomic Models and Subatomic Particles The Periodic Table Chemical Bonding 1. Atomic Models and Subatomic Particles: A. Subatomic Particles and Average Atomic Mass: - Subatomic
Learning Guide for Chapter 13 - Alkynes
Learning Guide for Chapter 13 - Alkynes I. Introduction to Alkynes - p 1 II. Natural ccurrence and Uses of Alkynes - p 5 III. Physical Properties of Alkynes - p 7 IV. Spectroscopy of Alkynes - p 7 V. Nomenclature
First Row TM Catalyzed C-H Activation. Zhi Ren 2014/9/10
First Row TM Catalyzed C-H Activation Zhi Ren 2014/9/10 Outline 1. Introduction 2. Sc catalyzed C-H activation 3. Ti catalyzed C-H activation 4. V catalyzed C-H oxidation/fluorination 5. Mn catalyzed C-H
Chapter 9 Alkynes. Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Chapter 9 Alkynes Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 9.1 Sources of Alkynes Acetylene Industrial preparation of acetylene is by dehydrogenation of
OAT Organic Chemistry - Problem Drill 19: NMR Spectroscopy and Mass Spectrometry
OAT Organic Chemistry - Problem Drill 19: NMR Spectroscopy and Mass Spectrometry Question No. 1 of 10 Question 1. Which statement concerning NMR spectroscopy is incorrect? Question #01 (A) Only nuclei
Spectroscopy. Empirical Formula: Chemical Formula: Index of Hydrogen Deficiency (IHD)
Spectroscopy Empirical Formula: Chemical Formula: Index of Hydrogen Deficiency (IHD) A)From a structure: B)From a molecular formula, C c H h N n O o X x, Formula for saturated hydrocarbons: Subtract the
A Highly Active Gold(I)-Silver(I) Oxo Cluster Activating sp 3 C-H. Bonds of Methyl Ketones under Mild Conditions
Supporting information A Highly Active Gold(I)-Silver(I) Oxo Cluster Activating sp 3 C-H Bonds of Methyl Ketones under Mild Conditions Xiao-Li Pei, Yang Yang, Zhen Lei, Shan-Shan Chang, Zong-Jie Guan,
Reversible 1,2-Alkyl Migration to Carbene and Ammonia Activation in an NHC-Zirconium Complex.
Reversible 1,2-Alkyl Migration to Carbene and Ammonia Activation in an NHC-Zirconium Complex. Emmanuelle Despagnet-Ayoub, Michael K. Takase, Jay A. Labinger and John E. Bercaw Contents 1. Experimental
sp 3 C-H Alkylation with Olefins Yan Xu Dec. 3, 2014
sp 3 C-H Alkylation with Olefins, Yan Xu Dec. 3, 2014 1) sp 3 C-H Alkylation via Directed C-H activation 2) Hydroaminoalkylation (still via C-H activation) 3) Hydrohydroxyalkylation (via radical chemistry)
Tautomerism and Keto Enol Equilibrium
Tautomerism and Keto Enol Equilibrium Enols & enolates are important nucleophiles in organic & biochemistry. Keto-Enol Equilibrium: Tautomerisation can be catalyzed by either acids or bases. Relative stability
Chapter 3. Alkenes And Alkynes
Chapter 3 Alkenes And Alkynes Alkenes ydrocarbons containing double bonds C C double bond the functional group center of reactivity Molecular Formula of Alkene Acyclic alkene: C n 2n Cyclic alkene: C n
Announcements. 10pm Room assignments for Exam III and TA Exam Review Sessions are posted on website. Look under Exam Info link
Announcements 1. Exam #3: Thursday, Dec. 6 th, 7:00-8:15pm (Conflict: 5:15-6:30pm) No calculators allowed 2. Activity 3: Making Models of Molecules lab write-up due tomorrow in discussion 3. Lon-capa HW
June 2009(Chemistry Paper 2)
Section A : physical and General chemistry June 2009(Chemistry Paper 2) 1. The diagram shows the mass spectrum of chlorine atomic number 17. The relative atomic mass of chlorine can be from the spectrum
Name: Student Number: University of Manitoba - Department of Chemistry CHEM Introductory Organic Chemistry II - Term Test 1
Name: Student Number: University of Manitoba - Department of Chemistry CHEM 2220 - Introductory Organic Chemistry II - Term Test 1 Thursday, February 12, 2015; 7-9 PM This is a 2-hour test, marked out
Bonding/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
CHEMICAL COMPOUNDS AND THEIR CHARACTERISTIC PROPERTIES
Seminar_2 1. Chemical compounds and their characteristic properties. 2. Types of chemical bonds (theses). 3. Basic types of complex compounds (theses). 4. Stability of complex compounds. TEST 2_ Chemical
i) An article X is to be plated with Nickel. Answer the following questions: c) Write the reactions that take place at cathode and anode.
Work sheet Electrolysis i) An article X is to be plated with Nickel. Answer the following questions: a) Name the anode and cathode used. b) Name the electrolyte used. c) Write the reactions that take place
CHEM 213 FALL 2016 MIDTERM EXAM 2 - VERSION A
CHEM 213 FALL 2016 MIDTERM EXAM 2 - VERSIN A Answer multiple choice questions on the green computer sheet provided with a PENCIL. Be sure to encode both your NAME and Registration Number (V#). You will
Answers to Assignment #5
Answers to Assignment #5 A. 9 8 l 2 5 DBE (benzene + 1 DBE) ( 9 2(9)+2-9 8+1+1 = 10 ˆ 5 DBE) nmr pattern of two doublets of equal integration at δ7.4 and 7.9 ppm means the group (the δ7.9 shift) IR band
CLASS 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
Highly Efficient, Convergent, and Enantioselective Synthesis of Phthioceranic Acid
Highly Efficient, Convergent, and Enantioselective Synthesis of Phthioceranic Acid Shiqing Xu, Akimichi Oda, Thomas Bobinski, Haijun Li, Yohei Matsueda, and Ei-ichi Negishi Angew. Chem. Int. Ed. 2015,
Molecular Structure and Bonding. Assis.Prof.Dr.Mohammed Hassan Lecture 2
Molecular Structure and Bonding Assis.Prof.Dr.Mohammed Hassan Lecture 2 Lewis structures: Lewis Theory The octet rule All elements except hydrogen ( hydrogen have a duet of electrons) have octet of electrons
Atoms and The Periodic Table
Atoms and The Periodic Table A. Early Models of the Atom 1. The earliest models of the atom came in the 5 th century B.C. when In the 4 th century, B.C., rejected this idea and proposed that earthly matter
Recapping where we are so far
Recapping where we are so far Valence bond constructions, valence, valence electron counting, formal charges, etc Equivalent neutral classification and MLX plots Basic concepts for mechanism and kinetics
A. Review of Acidity and pk a Common way to examine acidity is to use the Bronsted-Lowry acid-base equation:
1 Chapter 22: Reactions of Enols and Enolates I. Alpha Substitution verview: A. Review of Acidity and pk a Common way to examine acidity is to use the Bronsted-Lowry acid-base equation: Recall that the
Chemical Bonding I: Covalent Bonding. How are atoms held together in compounds?
I: Covalent Bonding How are atoms held together in compounds? IONIC or COVALENT bonds or forces For most atoms, a filled outer shell contains 8 electrons ----- an octet Atoms want to form octets when they
Chemistry 1 1. Review Package #3. Atomic Models and Subatomic Particles The Periodic Table Chemical Bonding
Chemistry 1 1 Review Package #3 Atomic Models and Subatomic Particles The Periodic Table Chemical Bonding properties 1. Atomic Models and Subatomic Particles: A. Subatomic Particles and Average Atomic
350 Organic Chemistry I Winona State University
350 Organic Chemistry I Winona State University Exam #4B, December 9, 2013 Professor T. Nalli Name General Instructions: Write your name in the space provided above and on the provided Scan-tron form.
Stability Nuclear & Electronic (then ion formation/covalent bonding)
Stability Nuclear & Electronic (then ion formation/covalent bonding) Most elements are not stable in their atomic form. (Exceptions to that? ) They become stable by gaining or losing e! to form ions, or
PRACTICE EXAMINATION QUESTIONS FOR 1.1 ATOMIC STRUCTURE (includes some questions from 1.4 Periodicity)
PRACTICE EXAMINATION QUESTIONS FOR 1.1 ATOMIC STRUCTURE (includes some questions from 1.4 Periodicity) 1. At room temperature, both sodium metal and sodium chloride are crystalline solids which contain
Activation of a hydroamination gold catalyst by oxidation of a redox non-innocent chlorostibine Z-ligand
Activation of a hydroamination gold catalyst by oxidation of a redox non-innocent chlorostibine Z-ligand Haifeng Yang and François P. Gabbaï Department of Chemistry, Texas A&M University, College Station,
End of chapter exercises
End of chapter exercises Problem 1: Give one word/term for each of the following descriptions. 1. The distance between two adjacent atoms in a molecule. 2. A type of chemical bond that involves the sharing
Find the difference in electronegativity between the hydrogen and chlorine atoms
Answers Questions 16.2 Molecular polarity 1. Write a dot diagram for the HCl molecule. Find the difference in electronegativity between the hydrogen and chlorine atoms Difference in electronegativity =
Problem session (3) Daiki Kuwana. Please fill in the blank and explain reaction mechanisms and stereoselectivities.
Problem session (3) Daiki Kuwana Please fill in the blank and explain reaction mechanisms and stereoselectivities. 1. 1-1 1. (Ac) 2 (10 mol%), DPEphos (20 mol%) Et 3, toluene, 90 C 2. s 4 (14 mol%), M;
Chemical Bonding Basics
Chemical Bonding Basics Reading: Ch 9, sections 5-9 Homework: Chapter 9: 49, 51, 53, 59, 63*, 69, 71*,73 * = important homework question Recap and overview: We have already investigated the structure of
CSIR-UGC-NET/JRF GATE CHEMISTRY TEST : ORGANOMETALLIC COMPOUNDS
1 CSIR-UGC-NET/JRF GATE CHEMISTRY TEST : ORGANOMETALLIC MPOUNDS Time 00 : Hour Date : 1-10-2017 M.M. : 0 INSTRUCTION : 1. There are Two Parts. Part-A contains 10 objective type questions, each question
Contents. 1 Matter: Its Properties and Measurement 1. 2 Atoms and the Atomic Theory Chemical Compounds Chemical Reactions 111
Ed: Pls provide art About the Authors Preface xvii xvi 1 Matter: Its Properties and Measurement 1 1-1 The Scientific Method 2 1-2 Properties of Matter 4 1-3 Classification of Matter 5 1-4 Measurement of
NUCLEAR MAGNETIC RESONANCE AND INTRODUCTION TO MASS SPECTROMETRY
NUCLEAR MAGNETIC RESONANCE AND INTRODUCTION TO MASS SPECTROMETRY A STUDENT SHOULD BE ABLE TO: 1. Identify and explain the processes involved in proton ( 1 H) and carbon-13 ( 13 C) nuclear magnetic resonance
Cobalt- and Iron-Catalyzed Isomerization-Hydroboration of Branched Alkenes: Terminal Hydroboration with Pinacolborane and 1,3,2-Diazaborolanes
Cobalt- and Iron-Catalyzed Isomerization-Hydroboration of Branched Alkenes: Terminal Hydroboration with Pinacolborane and 1,3,2-Diazaborolanes Takahiko Ogawa, a Adam J. Ruddy, a Orson L. Sydora, *,b Mark
2 C 4 H 10 (g) + 13 O 2 (g) 8 CO 2 (g) + 10 H 2 O(l)
3.66 Silicon tetrachloride (SiCl 4 ) can be prepared by heating Si in chlorine gas: Si(s) + 2 Cl 2 (g) SiCl 4 (l) In one reaction, 0.507 mole of SiCl 4 is produced. How many moles of molecular chlorine
Iron Catalysis in Organic Synthesis Multitasking Champion. Current literature Andrey Kuzovlev
Iron Catalysis in Organic Synthesis Multitasking Champion Current literature Andrey Kuzovlev 02.03.2017 Introduction Readily available, cheap, relatively nontoxic, 1.300 ppm residual iron is acceptable
A Summary of Organometallic Chemistry
A Summary of Organometallic Chemistry Counting valence electrons (v.e.) with the ionic model 1. Look at the total charge of the complex Ph 3 P Cl Rh Ph 3 P PPh 3 OC CO 2 Fe OC CO Co + charge:0 charge:
Abstracts. p67. X. Tan, H. Lv, and X. Zhang. R. Hudson and A. Moores
IX 1.1.1 omogeneous Reduction of Alkenes X. Tan,. Lv, and X. Zhang p7 This chapter is focused on recent progress in the asymmetric hydrogenation of substituted alkenes, and the application of this methodology
FINAL EXAMINATION 12/17/93.
INORGANIC CHEMISTRY 413/571 FINAL EXAMINATION 12/17/93. DR. J. SHERIDAN Write all answers in the answer book. WRITE NEATLY. This will help me to understand your answers and maybe get you a few more points!
Transition Metal-Catalyzed Carbon-Carbon Bond Cleavage (C-C Activation) Group Meeting Timothy Chang
Transition Metal-Catalyzed Carbon-Carbon Bond Cleavage (C-C Activation) Group Meeting 01-15-2008 Timothy Chang Outlines - Fundamental considerations, C-H versus C-C activation - Orbital interactions -
Supporting Information: Palladium Catalyzed Carboxylation of Allylstannanes and Allylboranes Using CO 2
Supporting Information: Palladium Catalyzed Carboxylation of Allylstannanes and Allylboranes Using C 2 Jianguo Wu and Nilay Hazari * The Department of Chemistry, Yale University, P.. Box 208107, New Haven,
Assignment 09 A. 2- The image below depicts a seesaw structure. Which of the following has such a structure?
Assignment 09 A 1- Give the total number of electron domains, the number of bonding and nonbonding domains, and the molecular geometry, respectively, for the central atom of P 3. a) four electron domains,
Supporting Information. Silylated Organometals: A Family of Recyclable. Homogeneous Catalysts
Electronic Supplementary Material (ESI) for Green Chemistry. This journal is The Royal Society of Chemistry 14 Supporting Information lylated rganometals: A Family of Recyclable Homogeneous Catalysts Jian-Lin
Stable gold(iii) catalysts by oxidative addition of a carboncarbon
Stable gold(iii) catalysts by oxidative addition of a carboncarbon bond Chung-Yeh Wu, Takahiro oribe, Christian Borch Jacobsen & F. Dean Toste ature, 517, 449-454 (2015) presented by Ian Crouch Literature
Physical Properties. Alcohols can be: CH CH 2 OH CH 2 CH 3 C OH CH 3. Secondary alcohol. Primary alcohol. Tertiary alcohol
Chapter 10: Structure and Synthesis of Alcohols 100 Physical Properties Alcohols can be: CH 3 CH 3 CH CH 2 OH * Primary alcohol CH 3 OH CH * CH 2 CH 3 Secondary alcohol CH 3 CH 3 * C OH CH 3 Tertiary alcohol
Contents. Preface to the Second Edition. Acknowledgments
Contents Preface to the Second Edition Preface Acknowledgments xi xiii xv 1. How Science Deals with Complex Problems 1 1.1 Introduction: Levels in Science... 2 1.2 What Are Molecules Made of?... 4 1.3
UNIVERSITY OF SIERRA LEONE FOURAH BAY COLLEGE. FIRST EXAMINATION FOR THE DEGREE OF B. Sc. HONOURS LEVEL I SECOND SEMESTER EXAMINATION
UNIVERSITY OF SIERRA LEONE FOURAH BAY COLLEGE CHEM 221 FIRST EXAMINATION FOR THE DEGREE OF B. Sc. HONOURS LEVEL I SECOND SEMESTER EXAMINATION FRIDAY 21 st SEPTEMBER 2018 09.30 12.45 CHEM 221 FURTHER INORGANIC
CHEM311 FALL 2005 Practice Exam #3
CHEM311 FALL 2005 Practice Exam #3 Instructions: This is a multiple choice / short answer practice exam. For the multiple-choice questions, there may be more than one correct answer. If so, then circle
CH 3 TMG, DMF N H 3 CO 2 S. (PPh 3 ) 2 Pd 0
1. (a) rovide a reasonable mechanism for the following transformation. I S 2 C 3 C 3 ( 3 ) 2 2, CuI C 3 TMG, DMF 3 C 2 S TMG = Me 2 Me 2 ICu ( 3 ) 2 0 I S 2 C 3 S 2 C 3 Cu I 3 3 3 C 2 S I 3 3 3 C 2 S 3
e.g. propan-2-ol ethane-1,1-diol propane-1,2,3-triol H H
Alcohols General The functional group is - The homologous series has general formula n 2n+1 The names end in ol, with a number if needed to indicate where on the carbon skeleton the group is located. When
Chapter 13 Structure t Determination: Nuclear Magnetic Resonance Spectroscopy
John E. McMurry www.cengage.com/chemistry/mcmurry Chapter 13 Structure t Determination: ti Nuclear Magnetic Resonance Spectroscopy Revisions by Dr. Daniel Holmes MSU Paul D. Adams University of Arkansas
Supplementary Information
Catalytically Efficient Palladium anoparticles Stabilized by Click rrocenyl Dendrimers Cátia rnelas, Lionel Salmon, Jaime Ruiz Aranzaes, Didier Astruc Supplementary Information Cyclic Voltammetry (CV),
Alkynes Nomenclature of Alkynes
Chapter 7 Alkynes Alkynes - hydrocarbons containing a carbon-carbon triple bond (2 bonds) Acyclic alkanes = C n H 2n+2 Alkenes and cyclic alkanes = C n H 2n Alkynes (and cyclic alkenes) = C n H 2n-2 The
Chemical bonding is the combining of elements to form new substances.
Name Covalent Bonding and Nomenclature: Unit Objective Study Guide Class Period Date Due 1. Define chemical bonding. What is chemical bonding? Chemical bonding is the combining of elements to form new
AP Chemistry. Unit #7. Chemical Bonding & Molecular Shape. Zumdahl Chapters 8 & 9 TYPES OF BONDING BONDING. Discrete molecules formed
AP Chemistry Unit #7 Chemical Bonding & Molecular Shape Zumdahl Chapters 8 & 9 TYPES OF BONDING BONDING INTRA (Within (inside) compounds) STRONG INTER (Interactions between the molecules of a compound)
Supporting Text Synthesis of (2 S ,3 S )-2,3-bis(3-bromophenoxy)butane (3). Synthesis of (2 S ,3 S
Supporting Text Synthesis of (2S,3S)-2,3-bis(3-bromophenoxy)butane (3). Under N 2 atmosphere and at room temperature, a mixture of 3-bromophenol (0.746 g, 4.3 mmol) and Cs 2 C 3 (2.81 g, 8.6 mmol) in DMS
Fill in the chart below to determine the valence electrons of elements 3-10
Chemistry 11 Atomic Theory IV Name: Date: Block: 1. Lewis Diagrams 2. VSEPR Lewis Diagrams Lewis diagrams show the bonding between atoms of a molecule. Only the outermost electrons of an atom (called electrons)
PHYSICAL SCIENCES GRADE : 10
PHYSICAL SCIENCES GRADE : 0 TIME : hour TOTAL : 75 INSTRUCTIONS AND INFORMATION. Write your full name on your answer book in the appropriate place. 2. The question paper consists of SEVEN questions. Answer
metal-organic compounds
metal-organic compounds Acta Crystallographica Section E Structure Reports Online ISSN 1600-5368 l-oxido-bis[hydridotris(trimethylphosphane-jp)iridium(iii)](ir Ir) bis(tetrafluoridoborate) dihydrate Joseph
Hydroboration. Carreira: Chapter 7
ydroboration Carreira: Chapter 7 ydroboration of alkenes/alkynes is one of the most versatile reactions available. Most commonly, the resulting alkyl borane intermediates are not isolated, but are used
Covalent Bonds: overlap of orbitals σ-bond π-bond Molecular Orbitals
Covalent Bonding What is covalent bonding? Covalent Bonds: overlap of orbitals σ-bond π-bond Molecular Orbitals Hybrid Orbital Formation Shapes of Hybrid Orbitals Hybrid orbitals and Multiple Bonds resonance
Covalent Bonds. Unit 4b.1: Covalent bonds. Unit 4b ( se ven c la s s peri od s) Name:
Name: Covalent Bonds Unit 4b ( se ven c la s s peri od s) Unit 4b.1: Covalent bonds 1) A different type of intramolecular force (bond) a) Ionic compounds form between ions i) Electrons are transferred
Organic Chemistry I (Chem340), Spring Final Exam
rganic Chemistry I (Chem340), pring 2005 Final Exam This is a closed-book exam. No aid is to be given to or received from another person. Model set and calculator may be used, but cannot be shared. Please
A fluorinated dendritic TsDPEN-Ru(II) catalyst for asymmetric transfer hydrogenation of prochiral ketones in aqueous media
Supplementary Information A fluorinated dendritic TsDPEN-Ru(II) catalyst for asymmetric transfer hydrogenation of prochiral ketones in aqueous media Weiwei Wang and Quanrui Wang* Department of Chemistry,
Organic Chemistry Laboratory Summer Lecture 6 Transition metal organometallic chemistry and catalysis July
344 Organic Chemistry Laboratory Summer 2013 Lecture 6 Transition metal organometallic chemistry and catalysis July 30 2013 Summary of Grignard lecture Organometallic chemistry - the chemistry of compounds
Unit 1 Module 1 Forces of Attraction page 1 of 10 Various forces of attraction between molecules
Unit 1 Module 1 Forces of Attraction page 1 of 10 Various forces of attraction between molecules 1. Ionic bonds 2. Covalent bonds (also co-ordinate covalent bonds) 3. Metallic bonds 4. Van der Waals forces
212 LSW ALKYNES S04. Alkynes
Alkynes Doubly unsaturated functional group Terminal alkynes, R-- 1) 2) 3) 4) Nomenclature: Functional group suffix = Disubstituted alkynes, R--R' Monosubstituted alkynes, R-- Stability: Substituted alkynes
R 2 R 4 Ln catalyst. This manuscript describes the methods for the synthesis and application of group 4 metallocene bis(trimethylsilyl)acetylene
VII Abstracts 2011 p1 2.12.15 rganometallic Complexes of Scandium, Yttrium, and the Lanthanides P. Dissanayake, D. J. Averill, and M. J. Allen This manuscript is an update to the existing Science of Synthesis