metal-organic compounds

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1 metal-organic compounds Acta Crystallographica Section E Structure Reports Online ISSN Bis(4,4 0 -bipyridinium) di-l-hydroxidobis[dihydroxido(pyridine-2,6-dicarboxylato)antimonate(iii,v)] octahydrate Janet Soleimannejad, a * Hossein Aghabozorg, b Yaghoub Mohammadzadeh Azar Golenji, a Jafar Attar Gharamaleki b and Harry Adams c a Department of Chemistry, Ilam University, Ilam, Iran, b Department of Chemistry, Teacher Training University, 49 Mofateh Avenue 15614, Tehran, Iran, and c Department of Chemistry, Sheffield University, Sheffield S3 7HF, England Correspondence janet_soleimannejad@yahoo.com Received 29 November 2007; accepted 14 January 2008 Key indicators: single-crystal X-ray study; T = 150 K; mean (C C) = Å; R factor = 0.023; wr factor = 0.060; data-to-parameter ratio = The reaction of antimony(iii) chloride, 4,4 0 -bipyridine (4,4 0 - bipy) and pyridine-2,6-dicarboxylic acid (pydch 2 ), in a 1:2:2 molar ratio in an aqueous solution, resulted in the formation of the title centrosymmetric disordered mixed-valence Sb III / Sb V compound, (C 10 H 9 N 2 ) 2 [Sb 2 (C 7 H 3 NO 4 ) 2 (OH) 6 ]8H 2 Oor (4,4 0 -bipyh) 2 [Sb(pydc)(OH) 2 (-OH)] 2 8H 2 O. The seven donor atoms of the (pydc) 2 groups and the hydroxido ligands form a distorted pentagonal bipyramidal arrangement around the Sb III /Sb V centers. C H stacking interactions between CH groups of the complex dianion and the aromatic rings of the (4,4 0 -bipyh) + cations, with a distance of 2.89 Å, are observed. In the crystal structure, a wide range of noncovalent interactions, consisting of O HO, N HO and C HO hydrogen bonds [DA ranging from (2) to (3) Å], ion pairing, stacking [centroid centroid distance of (13) Å] and C H interactions, connect the various components into a supramolecular structure. Related literature For related literature, see: Aghabozorg, Attar Gharamaleki, Ghadermazi et al. (2007); Aghabozorg, Attar Gharamaleki, Ghasemikhah et al. (2007); Aghabozorg, Daneshvar et al. (2007). Experimental Crystal data (C 10 H 9 N 2 ) 2 [Sb 2 (C 7 H 3 NO 4 ) 2 - (OH) 6 ]8H 2 O M r = Triclinic, P1 a = (11) Å b = (12) Å c = (12) Å = (2) Data collection Bruker SMART 1000 diffractometer Absorption correction: multi-scan (SADABS; Bruker, 2004) T min = 0.588, T max = (expected range = ) Refinement R[F 2 >2(F 2 )] = wr(f 2 ) = S = reflections Table 1 Hydrogen-bond geometry (Å, ). = (2) = (2) V = (2) Å 3 Z =1 Mo K radiation = 1.38 mm 1 T = 150 (2) K mm measured reflections 4790 independent reflections 4536 reflections with I > 2(I) R int = parameters H-atom parameters constrained max = 0.91 e Å 3 min = 0.70 e Å 3 D HA D H HA DA D HA O5 H5AO10 i (2) 161 O6 H6AO10 ii (2) 172 O7 H7AO8 iii (2) 174 O8 H8BO11 iv (2) 151 O8 H8BO3 iv (2) 115 O8 H8AN (2) 161 O9 H9AO1 v (2) 170 O9 H9BO (2) 177 O10 H10AO11 vi (2) 168 O10 H10BO (2) 178 O11 H11AO (2) 174 O11 H11BO (2) 169 N3 H3AO6 vii (2) 173 C13 H13O1 viii (3) 160 C15 H15O (3) 153 C17 H17O5 ix (3) 159 C5 H5Cg1(N2/C11 C15) x (2) 132 Symmetry codes: (i) x 1; y; z; (ii) x þ 1; y; z; (iii) x; y; z 1; (iv) x; y; z þ 1; (v) x þ 1; y þ 1; z; (vi) x þ 1; y; z þ 1; (vii) x; y þ 1; z; (viii) x; y; z þ 1; (ix) x; y þ 1; z; (x) x þ 1; y þ 1; z þ 1. Acta Cryst. (2008). E64, m387 m388 doi: /s Soleimannejad et al. m387

2 metal-organic compounds Data collection: SMART (Bruker, 2005); cell refinement: SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL. Financial support from Ilam University and the Teacher Training University is gratefully acknowledged. Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SU2034). References Aghabozorg, H., Attar Gharamaleki, J., Ghadermazi, M., Ghasemikhah, P. & Soleimannejad, J. (2007). Acta Cryst. E63, m1803 m1804. Aghabozorg, H., Attar Gharamaleki, J., Ghasemikhah, P., Ghadermazi, M. & Soleimannejad, J. (2007). Acta Cryst. E63, m1710 m1711. Aghabozorg, H., Daneshvar, S., Motyeian, E., Ghadermazi, M. & Attar Gharamaleki, J. (2007). Acta Cryst. E63, m2468 m2469. Bruker (2004). SADABS. Version 1. Bruker AXS Inc., Madison, Wisconsin, USA. Bruker (2005). SMART (Version 5.059) and SAINT (Version 7.23A). Bruker AXS Inc., Madison, Wisconsin, USA. Sheldrick, G. M. (2008). Acta Cryst. A64, m388 Soleimannejad et al. (C 10 H 9 N 2 ) 2 [Sb 2 (C 7 H 3 NO 4 ) 2 (OH) 6 ]8H 2 O Acta Cryst. (2008). E64, m387 m388

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4 Acta Cryst. (2008). E64, m387-m388 [ doi: /s ] Bis(4,4'-bipyridinium) dicarboxylato)antimonate(iii,v)] octahydrate di- -hydroxido-bis[dihydroxido(pyridine-2,6- J. Soleimannejad, H. Aghabozorg, Y. M. A. Golenji, J. Attar Gharamaleki and H. Adams Comment Our research group has recently focused its attention on the one-pot synthesis of water soluble proton transfer compounds that can function as suitable ligands in the synthesis of metal complexes (Aghabozorg et al., 2007a, Aghabozorg et al., 2007b, Aghabozorg et al., 2007c). The title compound is compossed of a disordered mixed valent SbIII/SbV binuclear dianion, two protonated 4,4'bipyridines, (4,4'-bipyH)+, and eight uncoordinated water molecules (Fig.1 and Fig. 2). The anionic SbIII/SbV binuclear complex is centrosymmetric; the binuclear units are related to one another by an inversion center, which lies at the center of the Sb2O2 four membered ring. Each antimony atom is coordinated to a tridentate (pydc)2- ligand by the carboxylate O-atoms and the pyridine N-atom, and to two terminal hydroxo ligands. Two more hydroxo ligands also serve as bridges between the two SbIII/SbV centers. These bridging hydroxyl groups are remaining from SbOCl, formed during the partial hydrolysis of SbCl3. The SbIII/SbV centers have a distorted pentagonal bipyramidal environment (Fig. 3). Atoms O5 and O6 occupy the axial positions [O5 Sb1 O6 = (6) ], whereas atoms N1, O2, O3, O7 and O7i (i: -x, -y, -z) atoms form the equatorial plane. In the crystal structure of the title complex, the spaces between layers of {[Sb(pydc)(OH)2(µ-OH)]2}2- anions are filled with (4,4'-bipyH)+ cations and water molecules (Fig. 4). The dihedral angle between the two best-planes passing through the aromatic rings of (4,4'-bipyH)+ is (17), which indicates the flexibility of the central C C bond. In the crystal structure of the title compound there are C H π stacking interactions between the C H group of the (pydc)2 fragments andthe aromatic rings of the (4,4'-bipyH)+ cations. The C H π distance (measured to the center of the pyridine ring) is 2.89 Å for C5 H5 Cg1 (1 - x, 1 - y, 1 - z) with an angle of 132. There are also π-π stacking interactions between the aromatic rings of the (4,4'-bipyH)+ cations, with a distance of (13) Å for Cg1 Cg1 A (-x, 1 - y, 1 - z) [Cg1 and Cg1 A are the centroids of rings N2/C11 C15 and N2A/C11A C15A, respectively] (Fig. 5). In the crystal structure, there are a wide range of non-covalent interactions, consisting O H O, N H O and C H O hydrogen bonds (Table 1 and Fig. 2), ion pairing, π π and C H π stacking interactions (Table 1), all of which connect the various components into a supramolecular structure. Experimental An aqueous solution (25 ml of water) of SbCl3 (290 mg, 1 mmol), 4,4'-bipyridine (310 mg, 2 mmol) and pyridine-2,6-dicarboxylic acid (360 mg, 2 mmol) was heated to boiling point for 2 h. Colorless crystals of the title compound were obtained from the solution after two days at room temperature. sup-1

5 Refinement The H-atoms were included in calculated positions and treated as riding atoms: O H = Å and C H = Å with Uiso(H) = 1.2Ueq(parent O or C-atom). Figures Fig. 1. A view of the molecular structure of the title compound, showing the atom labelling scheme and displacement ellipsoids drawn at the 50% probability level. Uncoordinated water molecules are omitted for clarity. Atoms marked with A are related by the symmetry code (-x, -y, -z). Fig. 2. A view of the crystal packing of the title compound, with the hydrogen bonds shown as dashed lines. Fig. 3. The coordination environment of the SbIII/SbV centers. Atoms marked with A are related by the symmetry code (-x, -y, -z). Fig. 4. Layered diagram of the title compound. The space between the two layers of {[Sb(pydc)(OH)2(µ-OH)]2}2- dianions are filled with (4,4'-bipyH)+ cations and water molecules. Fig. 5. C H π stacking interactions between the C H group of the (pydc)2 fragments and the aromatic rings of the (4,4'-bipyH)+ units. The C H π distance (measured to the center of phenyl ring) is 2.89 Å for C5 H5 Cg1 (1 - x, 1 - y, 1 - z). π-π stacking interactions between the aromatic rings of the (4,4'-bipyH)+ fragments with distance of (2) Å for Cg1 Cg1 A (-x, 1 - y, 1 - z) [Cg1 and Cg1 A are the centroids of the rings N2/C11 C15 and N2A/C11A C15A, respectively]. Bis(4,4'-bipyridinium) di-µ-hydroxido-bis[dihydroxido(pyridine-2,6-dicarboxylato)antimonate(iii,v)] octahydrate Crystal data (C10H9N2)2[Sb2(C7H3NO4)2(OH)6] 8H2O Z=1 Mr = F000 = 570 Triclinic, P1 Dx = Mg m 3 sup-2

6 Hall symbol: -P 1 a = (11) Å b = (12) Å c = (12) Å α = (2)º β = (2)º γ = (2)º Mo Kα radiation λ = Å Cell parameters from 9637 reflections θ = º µ = 1.38 mm 1 T = 150 (2) K Block, colourless mm V = (2) Å3 Data collection Bruker SMART 1000 diffractometer Radiation source: fine-focus sealed tube 4790 independent reflections Monochromator: graphite 4536 reflections with I > 2σ(I) Rint = Detector resolution: 100 pixels mm-1 θmax = 28.6º T = 150(2) K θmin = 1.9º ω scans Absorption correction: multi-scan (SADABS; Bruker, 2004) Tmin = 0.588, Tmax = h = k = l = measured reflections Refinement Refinement on F2 Secondary atom site location: difference Fourier map Least-squares matrix: full Hydrogen site location: inferred from neighbouring sites R[F2 > 2σ(F2)] = H-atom parameters constrained wr(f2) = w = 1/[σ2(Fo2) + (0.0357P) P] where P = (Fo2 + 2Fc2)/3 S = 1.07 (Δ/σ)max = reflections Δρmax = 0.91 e Å parameters Δρmin = 0.70 e Å 3 Primary atom site location: structure-invariant direct Extinction correction: none methods Special details Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wr and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(f2) is used only for calculating R- sup-3

7 factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) Sb1 O1 O2 O3 O4 O5 H5A O6 H6A O7 H7A O8 H8B H8A O9 H9A H9B O10 H10A H10B O11 H11A H11B N1 N2 N3 H3A C1 C2 C3 H3 C4 H4 C5 H5 C6 C7 C8 H8 C9 H9 C10 sup-4 x y z Uiso*/Ueq (13) (19) (16) (16) (16) (16) (15) (15) (17) (18) (19) (19) (17) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (12) (16) (14) (15) (16) (15) (15) (14) (16) (17) (19) (18) (17) (2) (19) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (11) (15) (13) (13) (13) (13) (13) (12) (14) (17) (16) (16) (15) (17) (17) (18) (18) (19) (2) (19) (18) (18) (2) (2) (19) (5) (4) (3) (3) (3) (3) 0.023* (3) 0.023* (3) 0.021* (3) 0.032* 0.032* (4) 0.041* 0.041* (4) 0.039* 0.039* (4) 0.040* 0.040* (3) (4) (4) 0.030* (4) (4) (4) 0.026* (4) 0.028* (4) 0.025* (4) (4) (4) 0.030* (4) 0.028* (4)

8 C11 C12 H12 C13 H13 C14 H14 C15 H15 C16 H16 C17 H (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (18) (19) (2) (2) (19) (2) (2) (4) (4) 0.027* (4) 0.031* (4) 0.031* (4) 0.026* (4) 0.028* (4) 0.030* Atomic displacement parameters (Å2) Sb1 O1 O2 O3 O4 O5 O6 O7 O8 O9 O10 O11 N1 N2 N3 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 U (7) (9) (7) (7) (7) (7) (7) (6) (8) (8) (9) (9) (7) (9) (9) (9) (9) (9) (9) (9) (8) (9) (10) (10) (9) (9) (10) (10) (10) (10) (10) U (7) (7) (7) (7) (8) (7) (7) (6) (7) (8) (10) (9) (8) (10) (9) (9) (9) (9) (10) (10) (9) (9) (10) (10) (10) (10) (10) (12) (10) (10) (10) U (8) (8) (7) (7) (7) (7) (7) (6) (8) (11) (8) (10) (8) (9) (10) (9) (9) (10) (11) (9) (9) (9) (11) (10) (10) (9) (10) (10) (12) (10) (10) U (5) (7) (5) (6) (6) (6) (6) (5) (6) (6) (8) (7) (6) (8) (7) (7) (7) (8) (8) (8) (7) (7) (8) (8) (8) (8) (8) (9) (9) (8) (8) U (5) (7) (5) (5) (6) (5) (5) (5) (6) (7) (7) (8) (6) (7) (7) (7) (7) (8) (8) (7) (7) (7) (9) (8) (7) (7) (8) (8) (9) (8) (8) U (5) (6) (5) (5) (6) (5) (5) (5) (6) (7) (7) (7) (6) (8) (7) (7) (7) (8) (8) (8) (7) (7) (9) (8) (8) (8) (8) (9) (9) (8) (8) sup-5

9 C (10) (11) (10) (9) (8) (9) Geometric parameters (Å, ) Sb1 O5 Sb1 O (14) (14) N3 C8 N3 H3A (3) 00 Sb1 O7i Sb1 O7 Sb1 O2 Sb1 O3 Sb1 N1 O1 C1 O2 C1 O3 C7 O4 C7 O5 H5A O6 H6A (13) C1 C (3) (13) (14) (14) (16) (3) (2) (2) (2) C2 C3 C3 C4 C3 H3 C4 C5 C4 H4 C5 C6 C5 H5 C6 C7 C8 C9 C8 H (3) (3) (3) (3) (3) (3) O7 Sb1i O7 H7A O8 H8B O8 H8A O9 H9A O9 H9B O10 H10A O10 H10B O11 H11A O11 H11B N1 C6 N1 C2 N2 C14 N2 C13 N3 C (13) C9 C (3) (3) (2) (3) (3) (3) C9 H9 C10 C16 C10 C11 C11 C12 C11 C15 C12 C13 C12 H12 C13 H13 C14 C15 C14 H14 C15 H15 C16 C17 C16 H16 C17 H (3) (3) (3) (3) (3) (3) (3) O5 Sb1 O (6) C2 C3 C (19) i (6) C2 C3 H O6 Sb1 O7i O5 Sb1 O7 O6 Sb1 O (6) C4 C3 H (6) (6) C5 C4 C3 C5 C4 H (19) O7i Sb1 O7 O5 Sb1 O2 O6 Sb1 O (6) C3 C4 H (6) (6) C4 C5 C6 C4 C5 H (19) O7i Sb1 O2 O7 Sb1 O2 O5 Sb1 O3 O6 Sb1 O (5) C6 C5 H (5) (6) (6) N1 C6 C5 N1 C6 C7 C5 C6 C (18) (17) (18) O7i Sb1 O3 O7 Sb1 O3 O2 Sb1 O (5) O4 C7 O (19) (5) (5) O4 C7 C6 O3 C7 C (18) (17) O5 Sb1 O7 sup-6

10 O5 Sb1 N1 O6 Sb1 N (6) (6) N3 C8 C9 N3 C8 H (2) O7i Sb1 N1 O7 Sb1 N1 O2 Sb1 N1 O3 Sb1 N1 C1 O2 Sb1 C7 O3 Sb1 Sb1 O5 H5A Sb1 O6 H6A (6) C9 C8 H (5) (6) (5) (12) (13) C8 C9 C10 C8 C9 H9 C10 C9 H9 C16 C10 C9 C16 C10 C11 C9 C10 C11 C12 C11 C (2) (19) (18) (18) (19) Sb1i O7 Sb (6) C12 C11 C (19) Sb1 O7 H7A Sb1 O7 H7A H8B O8 H8A H9A O9 H9B H10A O10 H10B H11A O11 H11B C6 N1 C2 C6 N1 Sb1 C2 N1 Sb1 C14 N2 C13 C17 N3 C8 C17 N3 H3A C8 N3 H3A O1 C1 O2 O1 C1 C2 O2 C1 C2 N1 C2 C3 N1 C2 C1 C3 C2 C C15 C11 C (18) (17) (13) (13) (19) (19) (19) (18) (17) (18) (17) (18) C13 C12 C11 C13 C12 H12 C11 C12 H12 N2 C13 C12 N2 C13 H13 C12 C13 H13 N2 C14 C15 N2 C14 H14 C15 C14 H14 C14 C15 C11 C14 C15 H15 C11 C15 H15 C17 C16 C10 C17 C16 H16 C10 C16 H16 N3 C17 C16 N3 C17 H17 C16 C17 H (2) (2) (2) (2) (2) (2) O5 Sb1 O2 C1 O6 Sb1 O2 C (15) (16) O1 C1 C2 C3 O2 C1 C2 C3 8.7 (3) (2) O7i Sb1 O2 C1 O7 Sb1 O2 C1 O3 Sb1 O2 C1 N1 Sb1 O2 C1 O5 Sb1 O3 C7 O6 Sb1 O3 C (14) N1 C2 C3 C4 0.7 (3) (16) (19) (15) (15) (15) C1 C2 C3 C4 C2 C3 C4 C5 C3 C4 C5 C6 C2 N1 C6 C5 Sb1 N1 C6 C (19) 1.2 (3) 1.6 (3) 2.0 (3) (14) O7i Sb1 O3 C7 O7 Sb1 O3 C7 O2 Sb1 O3 C7 N1 Sb1 O3 C (16) C2 N1 C6 C (17) (14) 1.37 (19) 1.72 (15) Sb1 N1 C6 C7 C4 C5 C6 N1 C4 C5 C6 C7 1.7 (2) 0.0 (3) (19) (7) Sb1 O3 C7 O (16) (7) Sb1 O3 C7 C6 3.1 (2) O7i Sb1 O7 Sb1i 0.0 N1 C6 C7 O (18) O2 Sb1 O7 Sb1i (8) C5 C6 C7 O4 4.6 (3) O3 Sb1 O7 Sb1i (13) N1 C6 C7 O3 3.1 (3) i O5 Sb1 O7 Sb1i O6 Sb1 O7 Sb1 i sup-7

11 N1 Sb1 O7 Sb1i O5 Sb1 N1 C6 O6 Sb1 N1 C (7) C5 C6 C7 O (19) (15) (15) C17 N3 C8 C9 N3 C8 C9 C (3) 1.0 (3) O7i Sb1 N1 C6 O7 Sb1 N1 C6 O2 Sb1 N1 C6 O3 Sb1 N1 C6 O5 Sb1 N1 C2 O6 Sb1 N1 C2 8.2 (2) C8 C9 C10 C (3) (13) (16) 0.22 (14) (15) (15) C8 C9 C10 C11 C16 C10 C11 C12 C9 C10 C11 C12 C16 C10 C11 C15 C9 C10 C11 C (19) (2) 32.1 (3) 31.2 (3) (2) O7i Sb1 N1 C2 O7 Sb1 N1 C2 O2 Sb1 N1 C2 O3 Sb1 N1 C2 Sb1 O2 C1 O1 Sb1 O2 C1 C2 C6 N1 C2 C3 Sb1 N1 C2 C3 C6 N1 C2 C1 Sb1 N1 C2 C1 O1 C1 C2 N1 O2 C1 C2 N1 Symmetry codes: (i) x, y, z (13) C15 C11 C12 C (3) 15.5 (2) 8.06 (14) (16) (18) 17.1 (2) 2.3 (3) (15) (17) 2.9 (2) (19) 8.8 (3) C10 C11 C12 C13 C14 N2 C13 C12 C11 C12 C13 N2 C13 N2 C14 C15 N2 C14 C15 C11 C12 C11 C15 C14 C10 C11 C15 C14 C9 C10 C16 C17 C11 C10 C16 C17 C8 N3 C17 C16 C10 C16 C17 N (19) 0.6 (3) 1.3 (3) 0.6 (3) 1.0 (3) 0.2 (3) (19) 1.0 (3) (19) 1.5 (3) 0.6 (3) Hydrogen-bond geometry (Å, ) D H A D H H A D A D H A O5 H5A O10 ii (2) 161 O6 H6A O10 iii (2) 172 iv (2) 174 v (2) (2) (2) (2) (2) (2) (2) (2) (2) N3 H3A O6viii (2) 173 C13 H13 O1ix C15 H15 O (3) (3) (3) (2) O7 H7A O8 O8 H8B O11 v O8 H8B O3 O8 H8A N2 O9 H9A O1 O9 H9B O6 vi O10 H10A O11 O10 H10B O9 O11 H11A O4 O11 H11B O8 vii x C17 H17 O5 xi 132 C5 H5 Cg1(N2/C11-C15) Symmetry codes: (ii) x 1, y, z; (iii) x+1, y, z; (iv) x, y, z 1; (v) x, y, z+1; (vi) x+1, y+1, z; (vii) x+1, y, z+1; (viii) x, y+1, z; (ix) x, y, z+1; (x) x, y+1, z; (xi) x+1, y+1, z+1. sup-8

12 Fig. 1 sup-9

13 Fig. 2 sup-10

14 Fig. 3 sup-11

15 Fig. 4 sup-12

16 Fig. 5 sup-13