metal-organic compounds
Bis(2,2′-bipyridine-κ2N,N′)chloridocobalt(II) perchlorate
aDepartment of Chemistry, Jining University, Shandong 273155, People's Republic of China, and bMarine Drug and Food Institute, Ocean University of China, Qingdao 266003, People's Republic of China
*Correspondence e-mail: zhongjungao@yahoo.cn
In the cation of the title compound, [CoCl(C10H8N2)2]ClO4, the CoII atom displays a distorted trigonal-bipyramidal coordination geometry. The two pyridine rings in each 2,2′-bipyridine ligand form dihedral angles of 10.75 (12) and 4.28 (13)°. The crystal packing is stabilized by interionic C—H⋯O hydrogen bonds, C—H⋯π interactions and aromatic π–π stacking interactions, with centroid–centroid distances of 3.616 (7) Å.
Related literature
For the use of 2,2′-bipyridine in coordination chemistry, see: Ruiz-Perez et al. (2002). For the structure of the corresponding copper(II) compound, see: Harrison et al. (1981).
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: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
10.1107/S1600536809049034/rz2393sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809049034/rz2393Isup2.hkl
To a solution of Co(ClO4)2.6H2O and CoCl2.6H2O (1:1 molar ratio) in ethanol (10 mL) was added a solution of 2,2'-bipyridine (0.1562 g, 1 mmol) in ethanol (20 mL) and the resulting green solution was stirred for 8h at 333 K. The mixture was then filtered and the filtrate was allowed to stand at room temperature for one week to give well shaped green crystals suitable for X-ray analysis (yield 61%). Analysis calculated for C20H16Cl2N4O4Co: C 47.45, H, 3.19; N 11.07%; found: C 47.49, H 3.26, N, 11.12%.
All H atoms were positioned geometrically and constrained to ride on their parent atoms, with C—H = 0.93 Å and with Uiso(H) = 1.2Ueq(C).
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: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).[CoCl(C10H8N2)2]ClO4 | F(000) = 1028 |
Mr = 506.20 | Dx = 1.615 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 2895 reflections |
a = 10.7725 (12) Å | θ = 2.6–25.8° |
b = 12.2696 (14) Å | µ = 1.12 mm−1 |
c = 16.333 (2) Å | T = 298 K |
β = 105.361 (2)° | Block, green |
V = 2081.7 (4) Å3 | 0.40 × 0.21 × 0.19 mm |
Z = 4 |
Bruker SMART CCD diffractometer | 3661 independent reflections |
Radiation source: fine-focus sealed tube | 2458 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.029 |
ϕ and ω scans | θmax = 25.0°, θmin = 2.1° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −12→12 |
Tmin = 0.664, Tmax = 0.816 | k = −14→14 |
10284 measured reflections | l = −12→19 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.043 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.124 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0432P)2 + 2.7771P] where P = (Fo2 + 2Fc2)/3 |
3661 reflections | (Δ/σ)max = 0.001 |
280 parameters | Δρmax = 0.50 e Å−3 |
1 restraint | Δρmin = −0.39 e Å−3 |
[CoCl(C10H8N2)2]ClO4 | V = 2081.7 (4) Å3 |
Mr = 506.20 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 10.7725 (12) Å | µ = 1.12 mm−1 |
b = 12.2696 (14) Å | T = 298 K |
c = 16.333 (2) Å | 0.40 × 0.21 × 0.19 mm |
β = 105.361 (2)° |
Bruker SMART CCD diffractometer | 3661 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2458 reflections with I > 2σ(I) |
Tmin = 0.664, Tmax = 0.816 | Rint = 0.029 |
10284 measured reflections |
R[F2 > 2σ(F2)] = 0.043 | 1 restraint |
wR(F2) = 0.124 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.50 e Å−3 |
3661 reflections | Δρmin = −0.39 e Å−3 |
280 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 > 2sigma(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 | ||
Co1 | 0.73259 (5) | 0.95539 (4) | 0.86267 (3) | 0.04181 (18) | |
N1 | 0.7739 (3) | 0.9517 (3) | 0.7508 (2) | 0.0531 (9) | |
Cl1 | 0.72296 (14) | 1.13977 (10) | 0.86111 (8) | 0.0720 (4) | |
Cl2 | 0.27386 (13) | 0.89418 (10) | 0.63357 (7) | 0.0653 (3) | |
N2 | 0.9032 (3) | 0.8579 (3) | 0.8932 (2) | 0.0504 (9) | |
N3 | 0.6929 (3) | 0.9438 (3) | 0.9747 (2) | 0.0514 (9) | |
N4 | 0.6035 (3) | 0.8263 (3) | 0.8383 (2) | 0.0527 (9) | |
O1 | 0.1665 (5) | 0.9455 (4) | 0.5784 (3) | 0.140 (2) | |
O2 | 0.2326 (4) | 0.8325 (4) | 0.6957 (2) | 0.1056 (14) | |
O3 | 0.3357 (5) | 0.8273 (4) | 0.5887 (3) | 0.143 (2) | |
O4 | 0.3567 (6) | 0.9733 (4) | 0.6800 (4) | 0.163 (2) | |
C1 | 0.7066 (5) | 1.0065 (4) | 0.6821 (3) | 0.0656 (13) | |
H1 | 0.6329 | 1.0440 | 0.6851 | 0.079* | |
C2 | 0.7427 (5) | 1.0089 (4) | 0.6077 (3) | 0.0682 (14) | |
H2 | 0.6939 | 1.0468 | 0.5609 | 0.082* | |
C3 | 0.8520 (5) | 0.9544 (4) | 0.6034 (3) | 0.0691 (14) | |
H3 | 0.8790 | 0.9562 | 0.5538 | 0.083* | |
C4 | 0.9217 (5) | 0.8970 (4) | 0.6730 (3) | 0.0617 (12) | |
H4 | 0.9955 | 0.8593 | 0.6708 | 0.074* | |
C5 | 0.8802 (4) | 0.8963 (3) | 0.7466 (3) | 0.0485 (10) | |
C6 | 0.9463 (4) | 0.8365 (3) | 0.8244 (3) | 0.0472 (10) | |
C7 | 1.0428 (5) | 0.7611 (4) | 0.8278 (3) | 0.0658 (13) | |
H7 | 1.0727 | 0.7473 | 0.7804 | 0.079* | |
C8 | 1.0942 (5) | 0.7065 (4) | 0.9037 (4) | 0.0742 (14) | |
H8 | 1.1589 | 0.6552 | 0.9072 | 0.089* | |
C9 | 1.0505 (5) | 0.7275 (4) | 0.9728 (3) | 0.0674 (13) | |
H9 | 1.0840 | 0.6909 | 1.0237 | 0.081* | |
C10 | 0.9553 (4) | 0.8044 (4) | 0.9653 (3) | 0.0624 (12) | |
H10 | 0.9259 | 0.8198 | 1.0127 | 0.075* | |
C11 | 0.7445 (5) | 1.0087 (4) | 1.0417 (3) | 0.0623 (12) | |
H11 | 0.8073 | 1.0588 | 1.0376 | 0.075* | |
C12 | 0.7073 (5) | 1.0034 (5) | 1.1160 (3) | 0.0689 (13) | |
H12 | 0.7447 | 1.0487 | 1.1615 | 0.083* | |
C13 | 0.6132 (5) | 0.9294 (4) | 1.1214 (3) | 0.0711 (15) | |
H13 | 0.5858 | 0.9245 | 1.1707 | 0.085* | |
C14 | 0.5602 (5) | 0.8629 (4) | 1.0530 (3) | 0.0679 (14) | |
H14 | 0.4959 | 0.8135 | 1.0557 | 0.082* | |
C15 | 0.6028 (4) | 0.8700 (4) | 0.9804 (3) | 0.0526 (11) | |
C16 | 0.5549 (4) | 0.8017 (3) | 0.9042 (3) | 0.0526 (11) | |
C17 | 0.4680 (5) | 0.7166 (4) | 0.8981 (4) | 0.0720 (14) | |
H17 | 0.4344 | 0.6999 | 0.9435 | 0.086* | |
C18 | 0.4323 (5) | 0.6573 (4) | 0.8242 (4) | 0.0835 (17) | |
H18 | 0.3734 | 0.6006 | 0.8193 | 0.100* | |
C19 | 0.4824 (5) | 0.6808 (4) | 0.7588 (4) | 0.0751 (15) | |
H19 | 0.4596 | 0.6404 | 0.7089 | 0.090* | |
C20 | 0.5678 (5) | 0.7659 (4) | 0.7675 (3) | 0.0632 (12) | |
H20 | 0.6022 | 0.7823 | 0.7224 | 0.076* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Co1 | 0.0476 (3) | 0.0455 (3) | 0.0378 (3) | −0.0002 (3) | 0.0210 (2) | 0.0038 (2) |
N1 | 0.056 (2) | 0.058 (2) | 0.049 (2) | 0.0005 (19) | 0.0199 (17) | 0.0079 (18) |
Cl1 | 0.1044 (10) | 0.0515 (6) | 0.0683 (8) | −0.0031 (7) | 0.0372 (7) | 0.0040 (6) |
Cl2 | 0.0797 (8) | 0.0674 (8) | 0.0556 (7) | 0.0164 (7) | 0.0302 (6) | 0.0039 (6) |
N2 | 0.050 (2) | 0.057 (2) | 0.048 (2) | −0.0015 (17) | 0.0184 (17) | 0.0080 (17) |
N3 | 0.054 (2) | 0.053 (2) | 0.052 (2) | 0.0006 (18) | 0.0244 (17) | 0.0030 (17) |
N4 | 0.050 (2) | 0.055 (2) | 0.056 (2) | 0.0011 (17) | 0.0181 (17) | 0.0032 (18) |
O1 | 0.138 (4) | 0.217 (6) | 0.072 (3) | 0.099 (4) | 0.039 (3) | 0.055 (3) |
O2 | 0.107 (3) | 0.131 (4) | 0.093 (3) | 0.021 (3) | 0.051 (2) | 0.047 (3) |
O3 | 0.178 (5) | 0.176 (5) | 0.095 (3) | 0.094 (4) | 0.071 (3) | −0.006 (3) |
O4 | 0.191 (6) | 0.107 (4) | 0.184 (6) | −0.048 (4) | 0.034 (5) | −0.021 (4) |
C1 | 0.073 (3) | 0.072 (3) | 0.052 (3) | 0.011 (3) | 0.018 (2) | 0.010 (2) |
C2 | 0.086 (4) | 0.071 (3) | 0.045 (3) | −0.004 (3) | 0.013 (3) | 0.007 (2) |
C3 | 0.094 (4) | 0.073 (3) | 0.047 (3) | −0.013 (3) | 0.031 (3) | −0.001 (3) |
C4 | 0.073 (3) | 0.066 (3) | 0.055 (3) | −0.006 (3) | 0.032 (2) | −0.009 (2) |
C5 | 0.053 (3) | 0.046 (2) | 0.051 (2) | −0.012 (2) | 0.022 (2) | −0.005 (2) |
C6 | 0.049 (2) | 0.045 (2) | 0.051 (2) | −0.007 (2) | 0.020 (2) | −0.0030 (19) |
C7 | 0.070 (3) | 0.061 (3) | 0.071 (3) | 0.006 (3) | 0.026 (3) | −0.008 (3) |
C8 | 0.068 (3) | 0.061 (3) | 0.090 (4) | 0.015 (3) | 0.014 (3) | −0.001 (3) |
C9 | 0.067 (3) | 0.064 (3) | 0.070 (3) | 0.007 (3) | 0.016 (3) | 0.011 (3) |
C10 | 0.063 (3) | 0.071 (3) | 0.055 (3) | 0.001 (3) | 0.020 (2) | 0.012 (2) |
C11 | 0.069 (3) | 0.065 (3) | 0.057 (3) | 0.000 (2) | 0.023 (2) | −0.001 (2) |
C12 | 0.085 (4) | 0.075 (3) | 0.051 (3) | 0.014 (3) | 0.026 (3) | 0.004 (2) |
C13 | 0.091 (4) | 0.080 (4) | 0.055 (3) | 0.019 (3) | 0.042 (3) | 0.016 (3) |
C14 | 0.072 (3) | 0.073 (3) | 0.071 (3) | 0.008 (3) | 0.040 (3) | 0.020 (3) |
C15 | 0.053 (3) | 0.053 (3) | 0.058 (3) | 0.012 (2) | 0.025 (2) | 0.016 (2) |
C16 | 0.048 (3) | 0.047 (2) | 0.067 (3) | 0.008 (2) | 0.022 (2) | 0.015 (2) |
C17 | 0.073 (3) | 0.060 (3) | 0.090 (4) | −0.004 (3) | 0.034 (3) | 0.016 (3) |
C18 | 0.077 (4) | 0.059 (3) | 0.109 (5) | −0.019 (3) | 0.016 (3) | 0.007 (3) |
C19 | 0.079 (4) | 0.055 (3) | 0.084 (4) | −0.006 (3) | 0.007 (3) | −0.001 (3) |
C20 | 0.065 (3) | 0.063 (3) | 0.060 (3) | −0.002 (2) | 0.015 (2) | −0.001 (2) |
Co1—N3 | 1.992 (3) | C6—C7 | 1.381 (6) |
Co1—N1 | 1.992 (3) | C7—C8 | 1.388 (7) |
Co1—N4 | 2.075 (4) | C7—H7 | 0.9300 |
Co1—N2 | 2.138 (3) | C8—C9 | 1.358 (7) |
Co1—Cl1 | 2.2645 (13) | C8—H8 | 0.9300 |
N1—C1 | 1.344 (6) | C9—C10 | 1.375 (6) |
N1—C5 | 1.349 (5) | C9—H9 | 0.9300 |
Cl2—O3 | 1.383 (4) | C10—H10 | 0.9300 |
Cl2—O4 | 1.399 (5) | C11—C12 | 1.375 (6) |
Cl2—O1 | 1.412 (4) | C11—H11 | 0.9300 |
Cl2—O2 | 1.428 (4) | C12—C13 | 1.381 (7) |
N2—C10 | 1.335 (5) | C12—H12 | 0.9300 |
N2—C6 | 1.351 (5) | C13—C14 | 1.379 (7) |
N3—C15 | 1.348 (5) | C13—H13 | 0.9300 |
N3—C11 | 1.349 (6) | C14—C15 | 1.382 (6) |
N4—C20 | 1.342 (5) | C14—H14 | 0.9300 |
N4—C16 | 1.350 (5) | C15—C16 | 1.475 (6) |
C1—C2 | 1.370 (6) | C16—C17 | 1.388 (6) |
C1—H1 | 0.9300 | C17—C18 | 1.374 (7) |
C2—C3 | 1.372 (7) | C17—H17 | 0.9300 |
C2—H2 | 0.9300 | C18—C19 | 1.351 (7) |
C3—C4 | 1.379 (7) | C18—H18 | 0.9300 |
C3—H3 | 0.9300 | C19—C20 | 1.373 (6) |
C4—C5 | 1.388 (6) | C19—H19 | 0.9300 |
C4—H4 | 0.9300 | C20—H20 | 0.9300 |
C5—C6 | 1.476 (6) | ||
N3—Co1—N1 | 174.58 (14) | N2—C6—C5 | 115.2 (4) |
N3—Co1—N4 | 79.94 (14) | C7—C6—C5 | 123.6 (4) |
N1—Co1—N4 | 96.21 (14) | C6—C7—C8 | 118.5 (5) |
N3—Co1—N2 | 97.25 (13) | C6—C7—H7 | 120.8 |
N1—Co1—N2 | 79.29 (13) | C8—C7—H7 | 120.8 |
N4—Co1—N2 | 96.25 (14) | C9—C8—C7 | 120.5 (5) |
N3—Co1—Cl1 | 93.53 (10) | C9—C8—H8 | 119.8 |
N1—Co1—Cl1 | 91.89 (11) | C7—C8—H8 | 119.8 |
N4—Co1—Cl1 | 137.20 (10) | C8—C9—C10 | 118.0 (5) |
N2—Co1—Cl1 | 126.54 (10) | C8—C9—H9 | 121.0 |
C1—N1—C5 | 119.2 (4) | C10—C9—H9 | 121.0 |
C1—N1—Co1 | 123.5 (3) | N2—C10—C9 | 123.1 (4) |
C5—N1—Co1 | 117.2 (3) | N2—C10—H10 | 118.5 |
O3—Cl2—O4 | 111.8 (4) | C9—C10—H10 | 118.5 |
O3—Cl2—O1 | 110.8 (3) | N3—C11—C12 | 122.2 (5) |
O4—Cl2—O1 | 109.5 (4) | N3—C11—H11 | 118.9 |
O3—Cl2—O2 | 110.3 (3) | C12—C11—H11 | 118.9 |
O4—Cl2—O2 | 104.9 (3) | C11—C12—C13 | 118.6 (5) |
O1—Cl2—O2 | 109.4 (3) | C11—C12—H12 | 120.7 |
C10—N2—C6 | 118.8 (4) | C13—C12—H12 | 120.7 |
C10—N2—Co1 | 128.0 (3) | C14—C13—C12 | 119.4 (4) |
C6—N2—Co1 | 112.2 (3) | C14—C13—H13 | 120.3 |
C15—N3—C11 | 119.4 (4) | C12—C13—H13 | 120.3 |
C15—N3—Co1 | 116.4 (3) | C13—C14—C15 | 119.8 (5) |
C11—N3—Co1 | 124.1 (3) | C13—C14—H14 | 120.1 |
C20—N4—C16 | 118.7 (4) | C15—C14—H14 | 120.1 |
C20—N4—Co1 | 127.7 (3) | N3—C15—C14 | 120.6 (4) |
C16—N4—Co1 | 113.5 (3) | N3—C15—C16 | 114.8 (4) |
N1—C1—C2 | 122.2 (5) | C14—C15—C16 | 124.5 (4) |
N1—C1—H1 | 118.9 | N4—C16—C17 | 120.5 (5) |
C2—C1—H1 | 118.9 | N4—C16—C15 | 115.0 (4) |
C1—C2—C3 | 119.0 (5) | C17—C16—C15 | 124.5 (4) |
C1—C2—H2 | 120.5 | C18—C17—C16 | 119.3 (5) |
C3—C2—H2 | 120.5 | C18—C17—H17 | 120.4 |
C2—C3—C4 | 119.5 (4) | C16—C17—H17 | 120.4 |
C2—C3—H3 | 120.3 | C19—C18—C17 | 120.2 (5) |
C4—C3—H3 | 120.3 | C19—C18—H18 | 119.9 |
C3—C4—C5 | 119.2 (5) | C17—C18—H18 | 119.9 |
C3—C4—H4 | 120.4 | C18—C19—C20 | 118.5 (5) |
C5—C4—H4 | 120.4 | C18—C19—H19 | 120.7 |
N1—C5—C4 | 120.8 (4) | C20—C19—H19 | 120.7 |
N1—C5—C6 | 115.4 (3) | N4—C20—C19 | 122.7 (5) |
C4—C5—C6 | 123.8 (4) | N4—C20—H20 | 118.6 |
N2—C6—C7 | 121.2 (4) | C19—C20—H20 | 118.6 |
D—H···A | D—H | H···A | D···A | D—H···A |
C3—H3···O1i | 0.93 | 2.41 | 3.170 (6) | 139 |
C4—H4···O2ii | 0.93 | 2.50 | 3.365 (6) | 155 |
C10—H10···O3iii | 0.93 | 2.53 | 3.116 (6) | 122 |
C11—H11···Cg1iv | 0.93 | 2.85 | 3.709 (6) | 155 |
Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) x+1, y, z; (iii) x+1/2, −y+3/2, z+1/2; (iv) −x+2, −y+2, −z+2. |
Experimental details
Crystal data | |
Chemical formula | [CoCl(C10H8N2)2]ClO4 |
Mr | 506.20 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 298 |
a, b, c (Å) | 10.7725 (12), 12.2696 (14), 16.333 (2) |
β (°) | 105.361 (2) |
V (Å3) | 2081.7 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 1.12 |
Crystal size (mm) | 0.40 × 0.21 × 0.19 |
Data collection | |
Diffractometer | Bruker SMART CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.664, 0.816 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10284, 3661, 2458 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.043, 0.124, 1.06 |
No. of reflections | 3661 |
No. of parameters | 280 |
No. of restraints | 1 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.50, −0.39 |
Computer programs: SMART (Bruker, 1998), SAINT (Bruker, 1998), SHELXS97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).
Co1—N3 | 1.992 (3) | Co1—N2 | 2.138 (3) |
Co1—N1 | 1.992 (3) | Co1—Cl1 | 2.2645 (13) |
Co1—N4 | 2.075 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
C3—H3···O1i | 0.93 | 2.41 | 3.170 (6) | 139.2 |
C4—H4···O2ii | 0.93 | 2.50 | 3.365 (6) | 155.1 |
C10—H10···O3iii | 0.93 | 2.53 | 3.116 (6) | 121.6 |
C11—H11···Cg1iv | 0.93 | 2.85 | 3.709 (6) | 155 |
Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) x+1, y, z; (iii) x+1/2, −y+3/2, z+1/2; (iv) −x+2, −y+2, −z+2. |
Acknowledgements
We acknowledge the financial support of the Science Foundation of Shandong.
References
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Hydrogen bonding has been intensively investigated in organic crystalline solids, but is relatively unexplored in coordination complexes. In order to search the new functional hydrogen-bonded metal coordination network structures, chelating ligands such as 2,2'-bipyridine (Ruiz-Perez et al., 2002) were selected for study because they can simultaneously coordinate with the metal ions and provide potential intermolecular interaction sites.
In title compound (Fig. 1), the cobalt(II) atom has a distorted trigonal bipyramidal coordination geometry provided by one chloride anion and four nitrogen atoms from the two chelating 2, 2'-bipyridine molecules. The equatorial plane is defined by the N2, N4 and Cl1 atoms, and the sum of the N—Co—N and N—Co—Cl angles is 360.0 (3)°. The apical positions are occupied by the N1 and N3 atoms [N1—Co1—N3 = 174.58 (14)°]. The Co—N bond lenghts (Table 1) lie in the range 1.992 (3)-2.138 (3) Å. The N1/C1–C5, N2/C6–C10 and N3/C11–C15, N4/C16–C20 pyridine rings form dihedral angles of 10.75 (12) and 4.28 (13)°, respectively. The structure is similar to that reported previously for the corresponding copper(II) compound (Harrison et al., 1981). In the crystal structure, cations and anions interact through C—H···O hydrogen bonds (Table 2) to form a three-dimensional network. The structure is further stabilized by a C—H···π interaction (C11—H11···Cg1, 2.85 Å; C11—H11—Cg1, 155°; Cg1 is the centroid of the N2/C6–C10 pyridine ring) and by aromatic π–π stacking interactions involving centrosymmetrically related N3/C11–C15 pyridine rings, with a centroid-to-centroid distance of 3.616 (7) Å.