metal-organic compounds
(2,2′-Bipyridine-κ2N,N′)dibromido(dimethyl sulfoxide-κO)zinc(II)
aDepartment of Chemistry, University of Urmiyeh, Urmyieh, Iran
*Correspondence e-mail: m.esmhosseini@urmia.ac.ir
In the molecule of the title compound, [ZnBr2(C10H8N2)(C2H6OS)], the ZnII atom is five-coordinated in a distorted trigonal–bipyramidal configuration by two N atoms from one 2,2′-bipyridine, one O atom from one dimethylsulfoxide molecule and two Br atoms. Intermolecular π–π stacking between parallel pyridine rings [face-to-face distance 3.32 (4) Å] and C—H⋯Br and C—H⋯O hydrogen-bonding interactions are present in the crystal structure.
Related literature
For related structures, see: Ahmadi et al. (2008); Alizadeh, Kalateh, Ebadi et al. (2009); Alizadeh, Kalateh, Khoshtarkib et al. (2009); Alizadeh, Khoshtarkib et al. (2009); Blake et al. (2007); Khan & Tuck (1984); Marjani et al. (2007); Khalighi et al. (2008).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 1998); cell SAINT (Bruker, 1998); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supporting information
https://doi.org/10.1107/S1600536810017551/xu2761sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810017551/xu2761Isup2.hkl
For the preparation of the title compound, (I), a solution of 2,2'-bipyridine (0.17 g, 1.10 mmol) in methanol (10 ml) was added to a solution of ZnBr2 (0.25 g, 1.10 mmol) in methanol (5 ml) at room temperature. The suitable crystals for X-ray diffraction experiment were obtained by methanol diffusion to a colorless solution in DMSO. Suitable crystals were isolated after one week (yield; 0.36 g, 71.2%).
H atoms were positioned geometrically with C—H = 0.93 Å for aromatic and 0.96 Å for methyl, and constrained to ride on their parent atoms with Uiso(H)=1.2Ueq(C).
There are several ZnII complexes containing 2,2'-bipyridine and 2,2'-bipyridine derivatives such as, [ZnCl2(bipy)], (II), (Khan & Tuck, 1984), [ZnCl2(5,5'-dmbpy)], (III), (Khalighi et al., 2008), [ZnCl2(6-mbpy)], (IV), (Ahmadi, et al., 2008), [ZnCl2(6,6'-dmbpy)], (V), (Alizadeh, Kalateh, Ebadi, et al., 2009), [ZnBr2(6,6'-dmbpy)], (VI), (Alizadeh, Khoshtarkib et al., 2009), [ZnI2(6,6'-dmbpy)], (VII), (Alizadeh, Kalateh, Khoshtarkib et al., 2009), [ZnCl2(bipy)(DMSO)], (VIII), (Marjani et al., 2007) and [ZnBr2(4,4'-(dtbpy)].(Et2O), (IX), (Blake et al., 2007) [where bipy is 2,2'-bipyridine, 5,5'-dmbpy is 5,5'-dimethyl-2,2'-bipyridine, 6,6'-dmbpy is 6,6'-dimethyl-2,2'-bipyridine, DMSO is dimethyl sulfoxide and dtbpy is 4,4'-di-tert-butyl-2,2'-bipyridine] have been synthesized and characterized by single-crystal X-ray diffraction methods. We report herein the synthesis and
of the title compound (I).In the molecule of the title compound, (I), (Fig. 1), the ZnII atom is five-coordinate in a distorted trigonal-bipyramidal configurations by two N atoms from one 2,2'-bipyridine, one atom from one dimethyl sulfoxide and two Br atoms. The Zn—N and Zn—O bond lengths and angles (Table 1) are within normal range (VIII) and Zn—Br bond lengths and angles are within normal range (VI).
The π-π contacts between the pyridine rings, Cg1···Cg3i, Cg2···Cg2ii, Cg2···Cg3i, Cg3···Cg1i and Cg3···Cg2i [symmetry cods: (i) 1-X,1-Y,1-Z, (ii) 1-X,-Y,1-Z, where Cg1, Cg2 and Cg3 are centroids of the rings (Zn1/N1/C5—C6/N2), (N1/C1—C5) and (N2/C6—C10), respectively] with centroid-centroid distance of 3.475 (3), 3.661 (3), 3.721 (3), 3.476 (3) and 3.721 (3) Å, respectively, and intramolecular C—H···O and C—H···Br hydrogen bonding it seems effective in the stabilization of the (Fig. 2).
For related structures, see: Ahmadi et al. (2008); Alizadeh, Kalateh, Ebadi et al. (2009); Alizadeh, Kalateh, Khoshtarkib et al. (2009); Alizadeh, Khoshtarkib et al. (2009); Blake et al. (2007); Khan & Tuck (1984); Marjani et al. (2007); Khalighi et al. (2008).
Data collection: SMART (Bruker, 1998); cell
SAINT (Bruker, 1998); data reduction: SAINT (Bruker, 1998); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).Fig. 1. The molecular structure of the title molecule, with the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level. | |
Fig. 2. Unit-cell packing diagram for (I). |
[ZnBr2(C10H8N2)(C2H6OS)] | F(000) = 896 |
Mr = 459.51 | Dx = 1.938 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 653 reflections |
a = 9.4802 (10) Å | θ = 2.1–29.2° |
b = 8.3449 (7) Å | µ = 6.76 mm−1 |
c = 19.989 (2) Å | T = 298 K |
β = 95.185 (8)° | Block, colorless |
V = 1574.9 (3) Å3 | 0.30 × 0.25 × 0.20 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 4245 independent reflections |
Radiation source: fine-focus sealed tube | 3229 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.078 |
φ and ω scans | θmax = 29.2°, θmin = 2.1° |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | h = −12→12 |
Tmin = 0.148, Tmax = 0.260 | k = −11→11 |
12674 measured reflections | l = −27→25 |
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)] = 0.058 | H-atom parameters constrained |
wR(F2) = 0.140 | w = 1/[σ2(Fo2) + (0.0602P)2 + 1.8278P] where P = (Fo2 + 2Fc2)/3 |
S = 1.13 | (Δ/σ)max = 0.005 |
4245 reflections | Δρmax = 1.08 e Å−3 |
175 parameters | Δρmin = −1.46 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0087 (7) |
[ZnBr2(C10H8N2)(C2H6OS)] | V = 1574.9 (3) Å3 |
Mr = 459.51 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 9.4802 (10) Å | µ = 6.76 mm−1 |
b = 8.3449 (7) Å | T = 298 K |
c = 19.989 (2) Å | 0.30 × 0.25 × 0.20 mm |
β = 95.185 (8)° |
Bruker SMART CCD area-detector diffractometer | 4245 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | 3229 reflections with I > 2σ(I) |
Tmin = 0.148, Tmax = 0.260 | Rint = 0.078 |
12674 measured reflections |
R[F2 > 2σ(F2)] = 0.058 | 0 restraints |
wR(F2) = 0.140 | H-atom parameters constrained |
S = 1.13 | Δρmax = 1.08 e Å−3 |
4245 reflections | Δρmin = −1.46 e Å−3 |
175 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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-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. |
x | y | z | Uiso*/Ueq | ||
C1 | 0.5556 (5) | 0.1151 (7) | 0.3831 (3) | 0.0377 (10) | |
H1 | 0.5286 | 0.0980 | 0.3378 | 0.045* | |
C2 | 0.6783 (5) | 0.0424 (7) | 0.4117 (3) | 0.0425 (12) | |
H2 | 0.7333 | −0.0208 | 0.3859 | 0.051* | |
C3 | 0.7166 (6) | 0.0660 (7) | 0.4788 (3) | 0.0462 (13) | |
H3 | 0.7982 | 0.0185 | 0.4992 | 0.055* | |
C4 | 0.6335 (5) | 0.1603 (6) | 0.5155 (3) | 0.0383 (10) | |
H4 | 0.6581 | 0.1772 | 0.5611 | 0.046* | |
C5 | 0.5129 (5) | 0.2297 (6) | 0.4840 (2) | 0.0295 (9) | |
C6 | 0.4154 (5) | 0.3323 (6) | 0.5190 (2) | 0.0311 (9) | |
C7 | 0.4311 (6) | 0.3600 (7) | 0.5883 (2) | 0.0406 (11) | |
H7 | 0.5056 | 0.3137 | 0.6150 | 0.049* | |
C8 | 0.3346 (6) | 0.4570 (7) | 0.6166 (3) | 0.0432 (12) | |
H8 | 0.3433 | 0.4771 | 0.6625 | 0.052* | |
C9 | 0.2254 (5) | 0.5234 (7) | 0.5759 (3) | 0.0422 (12) | |
H9 | 0.1589 | 0.5889 | 0.5939 | 0.051* | |
C10 | 0.2162 (5) | 0.4915 (7) | 0.5085 (3) | 0.0395 (11) | |
H10 | 0.1421 | 0.5366 | 0.4812 | 0.047* | |
C11 | 0.2234 (7) | 0.7783 (10) | 0.2635 (4) | 0.0621 (18) | |
H11A | 0.3167 | 0.7412 | 0.2564 | 0.075* | |
H11B | 0.2302 | 0.8683 | 0.2935 | 0.075* | |
H11C | 0.1750 | 0.8099 | 0.2213 | 0.075* | |
C12 | −0.0109 (6) | 0.7414 (10) | 0.3256 (4) | 0.0650 (19) | |
H12A | 0.0281 | 0.8281 | 0.3529 | 0.078* | |
H12B | −0.0698 | 0.6765 | 0.3514 | 0.078* | |
H12C | −0.0665 | 0.7838 | 0.2872 | 0.078* | |
N1 | 0.4750 (4) | 0.2084 (5) | 0.41813 (19) | 0.0324 (8) | |
N2 | 0.3090 (4) | 0.3984 (5) | 0.48005 (19) | 0.0324 (8) | |
O1 | 0.2163 (4) | 0.5774 (5) | 0.36384 (18) | 0.0440 (9) | |
Zn1 | 0.29167 (5) | 0.33824 (7) | 0.37552 (3) | 0.03244 (16) | |
Br1 | 0.37506 (6) | 0.34269 (8) | 0.26199 (3) | 0.04918 (19) | |
Br2 | 0.07887 (6) | 0.17861 (8) | 0.37356 (3) | 0.05171 (19) | |
S1 | 0.12833 (14) | 0.62307 (17) | 0.29876 (7) | 0.0413 (3) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.040 (2) | 0.040 (3) | 0.033 (2) | 0.006 (2) | 0.0043 (19) | −0.001 (2) |
C2 | 0.042 (3) | 0.038 (3) | 0.049 (3) | 0.009 (2) | 0.012 (2) | −0.001 (2) |
C3 | 0.041 (3) | 0.044 (3) | 0.052 (3) | 0.009 (2) | −0.002 (2) | 0.008 (3) |
C4 | 0.038 (2) | 0.041 (3) | 0.035 (2) | −0.001 (2) | −0.0051 (18) | 0.004 (2) |
C5 | 0.032 (2) | 0.028 (2) | 0.028 (2) | −0.0061 (17) | 0.0007 (16) | 0.0022 (17) |
C6 | 0.0297 (19) | 0.031 (2) | 0.032 (2) | −0.0062 (17) | 0.0025 (16) | −0.0013 (19) |
C7 | 0.043 (3) | 0.047 (3) | 0.031 (2) | −0.006 (2) | −0.0026 (19) | −0.001 (2) |
C8 | 0.052 (3) | 0.049 (3) | 0.029 (2) | −0.008 (2) | 0.008 (2) | −0.003 (2) |
C9 | 0.046 (3) | 0.040 (3) | 0.043 (3) | 0.000 (2) | 0.018 (2) | −0.001 (2) |
C10 | 0.037 (2) | 0.043 (3) | 0.039 (2) | 0.005 (2) | 0.0079 (19) | 0.004 (2) |
C11 | 0.047 (3) | 0.080 (5) | 0.060 (4) | −0.005 (3) | 0.010 (3) | 0.026 (4) |
C12 | 0.040 (3) | 0.071 (5) | 0.086 (5) | 0.006 (3) | 0.014 (3) | 0.022 (4) |
N1 | 0.0333 (18) | 0.034 (2) | 0.0299 (18) | 0.0003 (15) | 0.0015 (14) | 0.0026 (16) |
N2 | 0.0278 (17) | 0.039 (2) | 0.0309 (18) | −0.0022 (15) | 0.0029 (14) | −0.0005 (17) |
O1 | 0.053 (2) | 0.041 (2) | 0.0352 (18) | 0.0093 (16) | −0.0089 (15) | 0.0020 (16) |
Zn1 | 0.0303 (3) | 0.0378 (3) | 0.0285 (3) | 0.0010 (2) | −0.00125 (19) | 0.0005 (2) |
Br1 | 0.0467 (3) | 0.0704 (4) | 0.0309 (2) | 0.0102 (3) | 0.0059 (2) | 0.0055 (3) |
Br2 | 0.0373 (3) | 0.0562 (4) | 0.0604 (4) | −0.0122 (2) | −0.0025 (2) | −0.0009 (3) |
S1 | 0.0409 (6) | 0.0409 (7) | 0.0397 (6) | 0.0015 (5) | −0.0084 (5) | 0.0036 (5) |
C1—N1 | 1.333 (6) | C9—H9 | 0.9300 |
C1—C2 | 1.388 (7) | C10—N2 | 1.338 (6) |
C1—H1 | 0.9300 | C10—H10 | 0.9300 |
C2—C3 | 1.372 (8) | C11—S1 | 1.761 (7) |
C2—H2 | 0.9300 | C11—H11A | 0.9600 |
C3—C4 | 1.372 (8) | C11—H11B | 0.9600 |
C3—H3 | 0.9300 | C11—H11C | 0.9600 |
C4—C5 | 1.382 (6) | C12—S1 | 1.770 (7) |
C4—H4 | 0.9300 | C12—H12A | 0.9600 |
C5—N1 | 1.345 (6) | C12—H12B | 0.9600 |
C5—C6 | 1.480 (6) | C12—H12C | 0.9600 |
C6—N2 | 1.336 (6) | Zn1—N1 | 2.157 (4) |
C6—C7 | 1.401 (6) | Zn1—N2 | 2.141 (4) |
C7—C8 | 1.380 (8) | S1—O1 | 1.529 (4) |
C7—H7 | 0.9300 | Zn1—O1 | 2.125 (4) |
C8—C9 | 1.374 (8) | Zn1—Br1 | 2.4701 (8) |
C8—H8 | 0.9300 | Zn1—Br2 | 2.4148 (8) |
C9—C10 | 1.369 (7) | ||
N1—C1—C2 | 122.6 (5) | S1—C11—H11B | 109.5 |
N1—C1—H1 | 118.7 | H11A—C11—H11B | 109.5 |
C2—C1—H1 | 118.7 | S1—C11—H11C | 109.5 |
C3—C2—C1 | 118.5 (5) | H11A—C11—H11C | 109.5 |
C3—C2—H2 | 120.7 | H11B—C11—H11C | 109.5 |
C1—C2—H2 | 120.7 | S1—C12—H12A | 109.5 |
C2—C3—C4 | 119.4 (5) | S1—C12—H12B | 109.5 |
C2—C3—H3 | 120.3 | H12A—C12—H12B | 109.5 |
C4—C3—H3 | 120.3 | S1—C12—H12C | 109.5 |
C3—C4—C5 | 119.2 (5) | H12A—C12—H12C | 109.5 |
C3—C4—H4 | 120.4 | H12B—C12—H12C | 109.5 |
C5—C4—H4 | 120.4 | C1—N1—C5 | 118.4 (4) |
N1—C5—C4 | 121.8 (5) | C1—N1—Zn1 | 124.5 (3) |
N1—C5—C6 | 114.5 (4) | C5—N1—Zn1 | 117.1 (3) |
C4—C5—C6 | 123.6 (4) | C6—N2—C10 | 118.9 (4) |
N2—C6—C7 | 121.0 (4) | C6—N2—Zn1 | 117.3 (3) |
N2—C6—C5 | 115.8 (4) | C10—N2—Zn1 | 123.7 (3) |
C7—C6—C5 | 123.2 (4) | S1—O1—Zn1 | 118.7 (2) |
C8—C7—C6 | 119.1 (5) | O1—Zn1—N2 | 83.24 (15) |
C8—C7—H7 | 120.4 | O1—Zn1—N1 | 139.98 (15) |
C6—C7—H7 | 120.4 | N2—Zn1—N1 | 75.19 (15) |
C9—C8—C7 | 119.1 (5) | O1—Zn1—Br2 | 104.13 (11) |
C9—C8—H8 | 120.4 | N2—Zn1—Br2 | 97.80 (11) |
C7—C8—H8 | 120.4 | N1—Zn1—Br2 | 111.81 (11) |
C10—C9—C8 | 118.8 (5) | O1—Zn1—Br1 | 90.99 (11) |
C10—C9—H9 | 120.6 | N2—Zn1—Br1 | 152.93 (11) |
C8—C9—H9 | 120.6 | N1—Zn1—Br1 | 93.27 (11) |
N2—C10—C9 | 123.1 (5) | Br2—Zn1—Br1 | 109.25 (3) |
N2—C10—H10 | 118.5 | O1—S1—C11 | 105.3 (3) |
C9—C10—H10 | 118.5 | O1—S1—C12 | 104.2 (3) |
S1—C11—H11A | 109.5 | C11—S1—C12 | 97.7 (4) |
N1—C1—C2—C3 | 1.0 (9) | C9—C10—N2—C6 | 0.4 (8) |
C1—C2—C3—C4 | −0.2 (9) | C9—C10—N2—Zn1 | 177.1 (4) |
C2—C3—C4—C5 | −0.1 (8) | S1—O1—Zn1—N2 | −159.5 (3) |
C3—C4—C5—N1 | −0.5 (8) | S1—O1—Zn1—N1 | 143.3 (2) |
C3—C4—C5—C6 | 179.5 (5) | S1—O1—Zn1—Br2 | −63.2 (3) |
N1—C5—C6—N2 | −4.3 (6) | S1—O1—Zn1—Br1 | 47.0 (3) |
C4—C5—C6—N2 | 175.7 (4) | C6—N2—Zn1—O1 | −146.3 (4) |
N1—C5—C6—C7 | 175.5 (4) | C10—N2—Zn1—O1 | 36.9 (4) |
C4—C5—C6—C7 | −4.5 (7) | C6—N2—Zn1—N1 | −0.3 (3) |
N2—C6—C7—C8 | 0.1 (8) | C10—N2—Zn1—N1 | −177.1 (4) |
C5—C6—C7—C8 | −179.7 (5) | C6—N2—Zn1—Br2 | 110.3 (3) |
C6—C7—C8—C9 | 0.2 (8) | C10—N2—Zn1—Br2 | −66.5 (4) |
C7—C8—C9—C10 | −0.2 (8) | C6—N2—Zn1—Br1 | −67.5 (5) |
C8—C9—C10—N2 | −0.1 (8) | C10—N2—Zn1—Br1 | 115.7 (4) |
C2—C1—N1—C5 | −1.5 (8) | C1—N1—Zn1—O1 | −119.4 (4) |
C2—C1—N1—Zn1 | 175.5 (4) | C5—N1—Zn1—O1 | 57.6 (4) |
C4—C5—N1—C1 | 1.2 (7) | C1—N1—Zn1—N2 | −179.1 (4) |
C6—C5—N1—C1 | −178.8 (4) | C5—N1—Zn1—N2 | −2.2 (3) |
C4—C5—N1—Zn1 | −175.9 (4) | C1—N1—Zn1—Br2 | 88.3 (4) |
C6—C5—N1—Zn1 | 4.0 (5) | C5—N1—Zn1—Br2 | −94.7 (3) |
C7—C6—N2—C10 | −0.4 (7) | C1—N1—Zn1—Br1 | −24.0 (4) |
C5—C6—N2—C10 | 179.4 (4) | C5—N1—Zn1—Br1 | 153.0 (3) |
C7—C6—N2—Zn1 | −177.3 (4) | Zn1—O1—S1—C11 | −120.4 (4) |
C5—C6—N2—Zn1 | 2.5 (5) | Zn1—O1—S1—C12 | 137.3 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1···Br1 | 0.93 | 2.86 | 3.413 (6) | 119 |
C10—H10···O1 | 0.93 | 2.53 | 2.979 (7) | 110 |
Experimental details
Crystal data | |
Chemical formula | [ZnBr2(C10H8N2)(C2H6OS)] |
Mr | 459.51 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 9.4802 (10), 8.3449 (7), 19.989 (2) |
β (°) | 95.185 (8) |
V (Å3) | 1574.9 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 6.76 |
Crystal size (mm) | 0.30 × 0.25 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 2001) |
Tmin, Tmax | 0.148, 0.260 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 12674, 4245, 3229 |
Rint | 0.078 |
(sin θ/λ)max (Å−1) | 0.687 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.058, 0.140, 1.13 |
No. of reflections | 4245 |
No. of parameters | 175 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.08, −1.46 |
Computer programs: SMART (Bruker, 1998), SAINT (Bruker, 1998), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997), WinGX (Farrugia, 1999).
Zn1—N1 | 2.157 (4) | Zn1—Br1 | 2.4701 (8) |
Zn1—N2 | 2.141 (4) | Zn1—Br2 | 2.4148 (8) |
Zn1—O1 | 2.125 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1···Br1 | 0.9300 | 2.8600 | 3.413 (6) | 119.00 |
C10—H10···O1 | 0.9300 | 2.5300 | 2.979 (7) | 110.00 |
Acknowledgements
The author is grateful to the University of Urmiyeh for financial support.
References
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There are several ZnII complexes containing 2,2'-bipyridine and 2,2'-bipyridine derivatives such as, [ZnCl2(bipy)], (II), (Khan & Tuck, 1984), [ZnCl2(5,5'-dmbpy)], (III), (Khalighi et al., 2008), [ZnCl2(6-mbpy)], (IV), (Ahmadi, et al., 2008), [ZnCl2(6,6'-dmbpy)], (V), (Alizadeh, Kalateh, Ebadi, et al., 2009), [ZnBr2(6,6'-dmbpy)], (VI), (Alizadeh, Khoshtarkib et al., 2009), [ZnI2(6,6'-dmbpy)], (VII), (Alizadeh, Kalateh, Khoshtarkib et al., 2009), [ZnCl2(bipy)(DMSO)], (VIII), (Marjani et al., 2007) and [ZnBr2(4,4'-(dtbpy)].(Et2O), (IX), (Blake et al., 2007) [where bipy is 2,2'-bipyridine, 5,5'-dmbpy is 5,5'-dimethyl-2,2'-bipyridine, 6,6'-dmbpy is 6,6'-dimethyl-2,2'-bipyridine, DMSO is dimethyl sulfoxide and dtbpy is 4,4'-di-tert-butyl-2,2'-bipyridine] have been synthesized and characterized by single-crystal X-ray diffraction methods. We report herein the synthesis and crystal structure of the title compound (I).
In the molecule of the title compound, (I), (Fig. 1), the ZnII atom is five-coordinate in a distorted trigonal-bipyramidal configurations by two N atoms from one 2,2'-bipyridine, one atom from one dimethyl sulfoxide and two Br atoms. The Zn—N and Zn—O bond lengths and angles (Table 1) are within normal range (VIII) and Zn—Br bond lengths and angles are within normal range (VI).
The π-π contacts between the pyridine rings, Cg1···Cg3i, Cg2···Cg2ii, Cg2···Cg3i, Cg3···Cg1i and Cg3···Cg2i [symmetry cods: (i) 1-X,1-Y,1-Z, (ii) 1-X,-Y,1-Z, where Cg1, Cg2 and Cg3 are centroids of the rings (Zn1/N1/C5—C6/N2), (N1/C1—C5) and (N2/C6—C10), respectively] with centroid-centroid distance of 3.475 (3), 3.661 (3), 3.721 (3), 3.476 (3) and 3.721 (3) Å, respectively, and intramolecular C—H···O and C—H···Br hydrogen bonding it seems effective in the stabilization of the crystal structure (Fig. 2).