metal-organic compounds
Dichloridobis[2-(2-furyl)-1-(2-furylmethyl)-1H-benzimidazole-κN3]cadmium(II)
aPharmacy College, Henan University of Traditional Chinese Medicine, Zhengzhou 450008, People's Republic of China
*Correspondence e-mail: yanghuaixia888@163.com
In the title complex, [CdCl2(C16H12N2O2)2], the CdII ion exhibits 2. It shows a distorted tetrahedral coordination defined by two N atoms from symmetry-related 2-(2-furyl)-1-(2-furylmethyl)-1H-benzimidazole ligands and by two symmetry-related Cl atoms. Intramolecular C—H⋯O hydrogen bonds stabilize the molecular configuration. Adjacent molecules are linked through C—H⋯Cl hydrogen bonds into a network structure.
Related literature
For background to benzimidazoles, see: Shen & Yuan (2006); Yang et al. (2008). For background to CdII complexes, see: Meng et al. (2004); Yang et al. (2010).
Experimental
Crystal data
|
Refinement
|
|
Data collection: CrystalClear (Rigaku/MSC, 2006); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536810034409/wm2393sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536810034409/wm2393Isup2.hkl
The ligand 2-(furan-2-yl)-1-(furan-2-yl-methyl)-1H-1,3-benzimidazole (0.04 mmol) in methanol (7 ml) was added dropwise to a methanol solution (5 ml) of CdCl2 (0.02 mmol). The resulting solution was allowed to stand at room temperature. After one week colorless crystals with good quality were obtained from the filtrate and dried in air.
H atoms were positioned geometrically and refined as riding atoms, with C-H = 0.93 (aromatic) and 0.97 (CH2) Å and with Uiso(H) = 1.2 Ueq(C).
Data collection: CrystalClear (Rigaku/MSC, 2006); cell
CrystalClear (Rigaku/MSC, 2006); data reduction: CrystalClear (Rigaku/MSC, 2006); program(s) used to solve structure: SHELXL97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. View of the title complex, showing the labelled atoms and displacement ellipsoids at the 30% probability level. H atoms were omitted for clarity. [Symmetry code A: -x+1, y, -z+0.5.] |
[CdCl2(C16H12N2O2)2] | F(000) = 1432 |
Mr = 711.85 | Dx = 1.576 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 4133 reflections |
a = 18.397 (4) Å | θ = 2.3–27.9° |
b = 10.451 (2) Å | µ = 0.95 mm−1 |
c = 17.470 (3) Å | T = 293 K |
β = 116.72 (3)° | Prism, colorless |
V = 3000.2 (13) Å3 | 0.21 × 0.19 × 0.16 mm |
Z = 4 |
Rigaku Saturn diffractometer | 2953 independent reflections |
Radiation source: fine-focus sealed tube | 2565 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.039 |
Detector resolution: 28.5714 pixels mm-1 | θmax = 26.0°, θmin = 2.3° |
ω scans | h = −22→22 |
Absorption correction: multi-scan (REQAB; Jacobson, 1998) | k = −12→10 |
Tmin = 0.825, Tmax = 0.863 | l = −21→21 |
10628 measured reflections |
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)] = 0.048 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.110 | H-atom parameters constrained |
S = 1.10 | w = 1/[σ2(Fo2) + (0.0536P)2] where P = (Fo2 + 2Fc2)/3 |
2953 reflections | (Δ/σ)max < 0.001 |
195 parameters | Δρmax = 0.34 e Å−3 |
0 restraints | Δρmin = −0.47 e Å−3 |
[CdCl2(C16H12N2O2)2] | V = 3000.2 (13) Å3 |
Mr = 711.85 | Z = 4 |
Monoclinic, C2/c | Mo Kα radiation |
a = 18.397 (4) Å | µ = 0.95 mm−1 |
b = 10.451 (2) Å | T = 293 K |
c = 17.470 (3) Å | 0.21 × 0.19 × 0.16 mm |
β = 116.72 (3)° |
Rigaku Saturn diffractometer | 2953 independent reflections |
Absorption correction: multi-scan (REQAB; Jacobson, 1998) | 2565 reflections with I > 2σ(I) |
Tmin = 0.825, Tmax = 0.863 | Rint = 0.039 |
10628 measured reflections |
R[F2 > 2σ(F2)] = 0.048 | 0 restraints |
wR(F2) = 0.110 | H-atom parameters constrained |
S = 1.10 | Δρmax = 0.34 e Å−3 |
2953 reflections | Δρmin = −0.47 e Å−3 |
195 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 | ||
Cd1 | 0.5000 | −0.08924 (3) | 0.2500 | 0.04422 (17) | |
Cl1 | 0.61483 (7) | −0.22781 (11) | 0.27047 (8) | 0.0670 (3) | |
O1 | 0.6047 (2) | 0.1489 (3) | 0.2577 (2) | 0.0742 (9) | |
O2 | 0.3968 (2) | 0.4328 (3) | 0.0331 (2) | 0.0822 (11) | |
N1 | 0.46860 (17) | 0.0215 (3) | 0.12856 (19) | 0.0401 (7) | |
N2 | 0.46152 (18) | 0.1695 (3) | 0.0334 (2) | 0.0439 (7) | |
C1 | 0.4133 (2) | −0.0189 (3) | 0.0476 (2) | 0.0400 (9) | |
C2 | 0.3666 (2) | −0.1304 (4) | 0.0213 (3) | 0.0487 (10) | |
H2A | 0.3693 | −0.1927 | 0.0605 | 0.058* | |
C3 | 0.3166 (2) | −0.1443 (4) | −0.0649 (3) | 0.0552 (11) | |
H3A | 0.2846 | −0.2173 | −0.0842 | 0.066* | |
C4 | 0.3126 (3) | −0.0521 (5) | −0.1240 (3) | 0.0613 (12) | |
H4A | 0.2782 | −0.0653 | −0.1818 | 0.074* | |
C5 | 0.3582 (3) | 0.0584 (4) | −0.0994 (3) | 0.0541 (11) | |
H5A | 0.3556 | 0.1202 | −0.1388 | 0.065* | |
C6 | 0.4083 (2) | 0.0723 (3) | −0.0121 (3) | 0.0426 (9) | |
C7 | 0.4950 (2) | 0.1349 (3) | 0.1171 (2) | 0.0407 (8) | |
C8 | 0.5529 (2) | 0.2124 (4) | 0.1863 (3) | 0.0476 (9) | |
C9 | 0.5623 (3) | 0.3387 (4) | 0.1971 (3) | 0.0574 (11) | |
H9A | 0.5330 | 0.4016 | 0.1576 | 0.069* | |
C10 | 0.6258 (3) | 0.3579 (6) | 0.2805 (4) | 0.0835 (17) | |
H10A | 0.6469 | 0.4363 | 0.3060 | 0.100* | |
C11 | 0.6496 (3) | 0.2440 (7) | 0.3154 (3) | 0.0882 (17) | |
H11A | 0.6905 | 0.2294 | 0.3705 | 0.106* | |
C12 | 0.4755 (2) | 0.2850 (4) | −0.0060 (3) | 0.0520 (10) | |
H12A | 0.4817 | 0.2609 | −0.0564 | 0.062* | |
H12B | 0.5257 | 0.3254 | 0.0342 | 0.062* | |
C13 | 0.4077 (3) | 0.3782 (4) | −0.0311 (3) | 0.0532 (11) | |
C14 | 0.3522 (3) | 0.4196 (4) | −0.1061 (3) | 0.0719 (14) | |
H14A | 0.3473 | 0.3972 | −0.1597 | 0.086* | |
C15 | 0.3012 (3) | 0.5054 (5) | −0.0888 (4) | 0.0888 (19) | |
H15A | 0.2564 | 0.5498 | −0.1290 | 0.107* | |
C16 | 0.3296 (4) | 0.5097 (5) | −0.0057 (5) | 0.097 (2) | |
H16A | 0.3073 | 0.5581 | 0.0232 | 0.117* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cd1 | 0.0472 (3) | 0.0419 (3) | 0.0376 (2) | 0.000 | 0.01378 (19) | 0.000 |
Cl1 | 0.0685 (7) | 0.0712 (8) | 0.0582 (7) | 0.0256 (6) | 0.0256 (6) | 0.0060 (6) |
O1 | 0.076 (2) | 0.082 (2) | 0.057 (2) | 0.0048 (19) | 0.0234 (18) | 0.0035 (18) |
O2 | 0.103 (3) | 0.079 (2) | 0.077 (2) | 0.046 (2) | 0.052 (2) | 0.0202 (18) |
N1 | 0.0410 (17) | 0.0379 (18) | 0.0373 (17) | 0.0028 (14) | 0.0141 (14) | 0.0035 (13) |
N2 | 0.0451 (18) | 0.0402 (18) | 0.0467 (19) | 0.0071 (15) | 0.0209 (15) | 0.0041 (15) |
C1 | 0.037 (2) | 0.042 (2) | 0.038 (2) | 0.0097 (16) | 0.0150 (17) | 0.0002 (16) |
C2 | 0.044 (2) | 0.047 (2) | 0.053 (2) | 0.0025 (18) | 0.0194 (19) | −0.0037 (19) |
C3 | 0.046 (2) | 0.061 (3) | 0.050 (3) | 0.001 (2) | 0.013 (2) | −0.017 (2) |
C4 | 0.053 (3) | 0.076 (3) | 0.038 (2) | 0.012 (2) | 0.006 (2) | −0.010 (2) |
C5 | 0.053 (3) | 0.065 (3) | 0.042 (2) | 0.018 (2) | 0.019 (2) | 0.008 (2) |
C6 | 0.040 (2) | 0.045 (2) | 0.042 (2) | 0.0131 (17) | 0.0170 (17) | 0.0022 (17) |
C7 | 0.040 (2) | 0.039 (2) | 0.041 (2) | 0.0060 (17) | 0.0168 (17) | 0.0031 (16) |
C8 | 0.043 (2) | 0.052 (2) | 0.049 (2) | −0.0006 (19) | 0.0220 (19) | 0.0009 (19) |
C9 | 0.062 (3) | 0.040 (2) | 0.063 (3) | −0.012 (2) | 0.021 (2) | −0.003 (2) |
C10 | 0.080 (4) | 0.085 (4) | 0.084 (4) | −0.045 (3) | 0.035 (3) | −0.037 (3) |
C11 | 0.060 (3) | 0.134 (5) | 0.056 (3) | −0.006 (4) | 0.013 (3) | −0.018 (4) |
C12 | 0.057 (3) | 0.049 (2) | 0.057 (3) | 0.0098 (19) | 0.033 (2) | 0.0160 (19) |
C13 | 0.059 (3) | 0.040 (2) | 0.065 (3) | 0.0088 (19) | 0.031 (2) | 0.009 (2) |
C14 | 0.079 (4) | 0.052 (3) | 0.066 (3) | 0.014 (2) | 0.016 (3) | 0.002 (2) |
C15 | 0.074 (4) | 0.051 (3) | 0.111 (5) | 0.021 (3) | 0.015 (4) | 0.008 (3) |
C16 | 0.099 (5) | 0.077 (4) | 0.125 (6) | 0.045 (3) | 0.059 (4) | 0.012 (4) |
Cd1—N1i | 2.252 (3) | C4—H4A | 0.9300 |
Cd1—N1 | 2.252 (3) | C5—C6 | 1.389 (5) |
Cd1—Cl1i | 2.4513 (12) | C5—H5A | 0.9300 |
Cd1—Cl1 | 2.4513 (12) | C7—C8 | 1.447 (5) |
O1—C8 | 1.354 (5) | C8—C9 | 1.334 (5) |
O1—C11 | 1.392 (6) | C9—C10 | 1.414 (7) |
O2—C13 | 1.352 (5) | C9—H9A | 0.9300 |
O2—C16 | 1.372 (6) | C10—C11 | 1.319 (7) |
N1—C7 | 1.330 (5) | C10—H10A | 0.9300 |
N1—C1 | 1.386 (4) | C11—H11A | 0.9300 |
N2—C7 | 1.356 (5) | C12—C13 | 1.484 (5) |
N2—C6 | 1.387 (5) | C12—H12A | 0.9700 |
N2—C12 | 1.469 (5) | C12—H12B | 0.9700 |
C1—C6 | 1.386 (5) | C13—C14 | 1.320 (6) |
C1—C2 | 1.396 (5) | C14—C15 | 1.424 (7) |
C2—C3 | 1.374 (6) | C14—H14A | 0.9300 |
C2—H2A | 0.9300 | C15—C16 | 1.305 (8) |
C3—C4 | 1.390 (6) | C15—H15A | 0.9300 |
C3—H3A | 0.9300 | C16—H16A | 0.9300 |
C4—C5 | 1.378 (6) | ||
N1i—Cd1—N1 | 118.17 (15) | N1—C7—C8 | 123.6 (3) |
N1i—Cd1—Cl1i | 106.27 (8) | N2—C7—C8 | 124.0 (3) |
N1—Cd1—Cl1i | 109.08 (8) | C9—C8—O1 | 111.2 (4) |
N1i—Cd1—Cl1 | 109.08 (8) | C9—C8—C7 | 132.2 (4) |
N1—Cd1—Cl1 | 106.27 (8) | O1—C8—C7 | 116.4 (4) |
Cl1i—Cd1—Cl1 | 107.57 (6) | C8—C9—C10 | 106.3 (4) |
C8—O1—C11 | 105.1 (4) | C8—C9—H9A | 126.8 |
C13—O2—C16 | 105.9 (4) | C10—C9—H9A | 126.8 |
C7—N1—C1 | 105.5 (3) | C11—C10—C9 | 107.3 (4) |
C7—N1—Cd1 | 130.1 (2) | C11—C10—H10A | 126.4 |
C1—N1—Cd1 | 124.4 (2) | C9—C10—H10A | 126.4 |
C7—N2—C6 | 106.5 (3) | C10—C11—O1 | 110.1 (5) |
C7—N2—C12 | 129.4 (3) | C10—C11—H11A | 125.0 |
C6—N2—C12 | 124.1 (3) | O1—C11—H11A | 125.0 |
N1—C1—C6 | 109.2 (3) | N2—C12—C13 | 112.1 (3) |
N1—C1—C2 | 130.6 (4) | N2—C12—H12A | 109.2 |
C6—C1—C2 | 120.2 (4) | C13—C12—H12A | 109.2 |
C3—C2—C1 | 117.3 (4) | N2—C12—H12B | 109.2 |
C3—C2—H2A | 121.4 | C13—C12—H12B | 109.2 |
C1—C2—H2A | 121.4 | H12A—C12—H12B | 107.9 |
C2—C3—C4 | 121.8 (4) | C14—C13—O2 | 110.3 (4) |
C2—C3—H3A | 119.1 | C14—C13—C12 | 133.0 (5) |
C4—C3—H3A | 119.1 | O2—C13—C12 | 116.7 (4) |
C3—C4—C5 | 121.8 (4) | C13—C14—C15 | 106.7 (5) |
C3—C4—H4A | 119.1 | C13—C14—H14A | 126.7 |
C5—C4—H4A | 119.1 | C15—C14—H14A | 126.7 |
C4—C5—C6 | 116.2 (4) | C16—C15—C14 | 106.5 (5) |
C4—C5—H5A | 121.9 | C16—C15—H15A | 126.7 |
C6—C5—H5A | 121.9 | C14—C15—H15A | 126.7 |
N2—C6—C1 | 106.3 (3) | C15—C16—O2 | 110.5 (5) |
N2—C6—C5 | 130.9 (4) | C15—C16—H16A | 124.7 |
C1—C6—C5 | 122.7 (4) | O2—C16—H16A | 124.7 |
N1—C7—N2 | 112.4 (3) | ||
N1i—Cd1—N1—C7 | 31.3 (3) | Cd1—N1—C7—C8 | −0.1 (5) |
Cl1i—Cd1—N1—C7 | 152.8 (3) | C6—N2—C7—N1 | 1.3 (4) |
Cl1—Cd1—N1—C7 | −91.5 (3) | C12—N2—C7—N1 | −178.8 (3) |
N1i—Cd1—N1—C1 | −147.1 (3) | C6—N2—C7—C8 | −178.6 (4) |
Cl1i—Cd1—N1—C1 | −25.7 (3) | C12—N2—C7—C8 | 1.3 (6) |
Cl1—Cd1—N1—C1 | 90.0 (3) | C11—O1—C8—C9 | −0.9 (5) |
C7—N1—C1—C6 | 0.8 (4) | C11—O1—C8—C7 | −176.4 (4) |
Cd1—N1—C1—C6 | 179.6 (2) | N1—C7—C8—C9 | −147.9 (5) |
C7—N1—C1—C2 | −179.6 (4) | N2—C7—C8—C9 | 32.1 (7) |
Cd1—N1—C1—C2 | −0.8 (5) | N1—C7—C8—O1 | 26.4 (6) |
N1—C1—C2—C3 | −179.7 (4) | N2—C7—C8—O1 | −153.6 (4) |
C6—C1—C2—C3 | −0.2 (5) | O1—C8—C9—C10 | 1.3 (5) |
C1—C2—C3—C4 | 0.4 (6) | C7—C8—C9—C10 | 175.8 (5) |
C2—C3—C4—C5 | −0.3 (7) | C8—C9—C10—C11 | −1.2 (6) |
C3—C4—C5—C6 | 0.0 (6) | C9—C10—C11—O1 | 0.6 (7) |
C7—N2—C6—C1 | −0.7 (4) | C8—O1—C11—C10 | 0.1 (6) |
C12—N2—C6—C1 | 179.4 (3) | C7—N2—C12—C13 | −103.6 (5) |
C7—N2—C6—C5 | 179.8 (4) | C6—N2—C12—C13 | 76.2 (5) |
C12—N2—C6—C5 | −0.1 (6) | C16—O2—C13—C14 | 1.3 (6) |
N1—C1—C6—N2 | 0.0 (4) | C16—O2—C13—C12 | −177.5 (4) |
C2—C1—C6—N2 | −179.7 (3) | N2—C12—C13—C14 | −112.3 (6) |
N1—C1—C6—C5 | 179.5 (3) | N2—C12—C13—O2 | 66.1 (5) |
C2—C1—C6—C5 | −0.1 (6) | O2—C13—C14—C15 | −0.9 (6) |
C4—C5—C6—N2 | 179.6 (4) | C12—C13—C14—C15 | 177.6 (5) |
C4—C5—C6—C1 | 0.2 (6) | C13—C14—C15—C16 | 0.2 (7) |
C1—N1—C7—N2 | −1.3 (4) | C14—C15—C16—O2 | 0.6 (7) |
Cd1—N1—C7—N2 | 180.0 (2) | C13—O2—C16—C15 | −1.2 (7) |
C1—N1—C7—C8 | 178.6 (4) |
Symmetry code: (i) −x+1, y, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C5—H5A···Cl1ii | 0.93 | 2.82 | 3.694 (5) | 156 |
C9—H9A···O2 | 0.93 | 2.49 | 3.256 (6) | 140 |
Symmetry code: (ii) −x+1, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | [CdCl2(C16H12N2O2)2] |
Mr | 711.85 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 293 |
a, b, c (Å) | 18.397 (4), 10.451 (2), 17.470 (3) |
β (°) | 116.72 (3) |
V (Å3) | 3000.2 (13) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.95 |
Crystal size (mm) | 0.21 × 0.19 × 0.16 |
Data collection | |
Diffractometer | Rigaku Saturn diffractometer |
Absorption correction | Multi-scan (REQAB; Jacobson, 1998) |
Tmin, Tmax | 0.825, 0.863 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10628, 2953, 2565 |
Rint | 0.039 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.048, 0.110, 1.10 |
No. of reflections | 2953 |
No. of parameters | 195 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.34, −0.47 |
Computer programs: CrystalClear (Rigaku/MSC, 2006), SHELXL97 (Sheldrick, 2008), XP in SHELXTL (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Cd1—N1 | 2.252 (3) | Cd1—Cl1 | 2.4513 (12) |
N1i—Cd1—N1 | 118.17 (15) | N1—Cd1—Cl1 | 106.27 (8) |
N1i—Cd1—Cl1 | 109.08 (8) | Cl1i—Cd1—Cl1 | 107.57 (6) |
Symmetry code: (i) −x+1, y, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C5—H5A···Cl1ii | 0.93 | 2.82 | 3.694 (5) | 156.3 |
C9—H9A···O2 | 0.93 | 2.49 | 3.256 (6) | 139.5 |
Symmetry code: (ii) −x+1, −y, −z. |
Acknowledgements
The study was supported by the Science and Technology Department of Henan Province (082102330003).
References
Jacobson, R. (1998). REQAB. Private communication to the Rigaku Corporation, Tokyo, Japan. Google Scholar
Meng, X.-R., Song, Y.-L., Hou, H.-W., Han, H.-Y., Xiao, B., Fan, Y.-T. & Zhu, Y. (2004). Inorg. Chem. 43, 3528–3536. Web of Science CSD CrossRef PubMed CAS Google Scholar
Rigaku/MSC (2006). CrystalClear. Rigaku/MSC, The Woodlands, Texas, USA. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Shen, X.-P. & Yuan, A.-H. (2006). Acta Cryst. E62, m2849–m2850. Web of Science CSD CrossRef IUCr Journals Google Scholar
Yang, H.-X., Meng, X.-R., Liu, Y., Hou, H.-W., Fan, Y.-T. & Shen, X.-Q. (2008). J. Solid State Chem. 181, 2178–2184. Web of Science CSD CrossRef CAS Google Scholar
Yang, H.-X., Zhang, J., Ding, Y.-N. & Meng, X.-R. (2010). Acta Cryst. E66, m578. Web of Science CSD CrossRef IUCr Journals Google Scholar
This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Benzimidazole and its derivatives have attracted interest because of their biological activities as well as their abilities to bind to different metal ions (Shen & Yuan, 2006; Yang et al., 2008). The CdII ion is a good model atom to construct complexes owing to its property to form bonds with different donors simultaneously, and to its various coordination modes (Meng et al., 2004; Yang et al., 2010). In this work, we describe the synthesis and structure of the title complex, [CdCl2(C16H12N2O2)2], (I).
In the structure of (I), two 2-(furan-2-yl)-1-(furan-2-yl-methyl)-1H-1,3-benzimidazole ligands and two Cl atoms coordinate to the CdII ion which is located on a twofold rotation axis. As expected, the Cd—Cl bond length is slightly longer than the Cd—N bond length. The environment around the CdII ion can be best described as distorted tetrahedral (Fig.1).
Intramolecular C—H···O hydrogen bonds stabilize the molecular configuration and C—H···Cl hydrogen bonds between adjacent molecules consolidate the crystal packing.