Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536803018117/fl6052sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536803018117/fl6052Isup2.hkl |
CCDC reference: 222815
An ethanol solution (10 ml) of benzimidazole (0.47 g, 4 mmol) was mixed with an aqueous solution (10 ml)o f CoCl2·6H2O (0.24 g, 1 mmol) at room temperature. An aqueous solution (6 ml) containing malonic acid (0.10 g, 1 mmol) and Na2CO3 (0.11 g, 1 mmol) was added to the above solution with stirring at room temperature. Then the mixture was refluxed for 1 h and filtered. Blue single crystals were obtained after 3 d.
H atoms of the benzimidazole ring were placed on calculated positions, with C—H distances of 0.93 Å (benzimidazole) or 0.97 Å (malonate) and N—H distances of 0.86 Å, and were allowed for in the final cycles of refinement in the riding mode, with Uiso(H) = 1.2Ueq of the carrier atoms.
Data collection: PROCESS-AUTO (Rigaku, 1998); cell refinement: PROCESS-AUTO; data reduction: CrystalStructure (Rigaku/MSC and Rigaku, 2002); program(s) used to solve structure: SIR92 (Altomare et al., 1993); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).
[Co(C3H2O4)(C7H6N2)4] | F(000) = 1308 |
Mr = 633.53 | Dx = 1.396 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
a = 9.2068 (12) Å | Cell parameters from 18608 reflections |
b = 25.0492 (16) Å | θ = 2.0–25.0° |
c = 13.8555 (13) Å | µ = 0.62 mm−1 |
β = 109.444 (15)° | T = 295 K |
V = 3013.2 (6) Å3 | Prism, blue |
Z = 4 | 0.22 × 0.15 × 0.10 mm |
Rigaku R-AXIS RAPID diffractometer | 5357 independent reflections |
Radiation source: fine-focus sealed tube | 4289 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.051 |
Detector resolution: 10.00 pixels mm-1 | θmax = 25.2°, θmin = 1.6° |
ω scans | h = −11→10 |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | k = −30→30 |
Tmin = 0.868, Tmax = 0.932 | l = −14→16 |
20267 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)] = 0.045 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.092 | H-atom parameters constrained |
S = 1.09 | w = 1/[σ2(Fo2) + (0.0381P)2 + 1.1717P] where P = (Fo2 + 2Fc2)/3 |
5357 reflections | (Δ/σ)max = 0.001 |
397 parameters | Δρmax = 0.29 e Å−3 |
0 restraints | Δρmin = −0.29 e Å−3 |
[Co(C3H2O4)(C7H6N2)4] | V = 3013.2 (6) Å3 |
Mr = 633.53 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 9.2068 (12) Å | µ = 0.62 mm−1 |
b = 25.0492 (16) Å | T = 295 K |
c = 13.8555 (13) Å | 0.22 × 0.15 × 0.10 mm |
β = 109.444 (15)° |
Rigaku R-AXIS RAPID diffractometer | 5357 independent reflections |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | 4289 reflections with I > 2σ(I) |
Tmin = 0.868, Tmax = 0.932 | Rint = 0.051 |
20267 measured reflections |
R[F2 > 2σ(F2)] = 0.045 | 0 restraints |
wR(F2) = 0.092 | H-atom parameters constrained |
S = 1.09 | Δρmax = 0.29 e Å−3 |
5357 reflections | Δρmin = −0.29 e Å−3 |
397 parameters |
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-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 | ||
Co | 0.43452 (3) | 0.145631 (13) | 0.41332 (2) | 0.02684 (10) | |
O1 | 0.33190 (19) | 0.10648 (7) | 0.50578 (13) | 0.0372 (4) | |
O2 | 0.1777 (2) | 0.09822 (8) | 0.59632 (16) | 0.0515 (5) | |
O3 | 0.37999 (19) | 0.21523 (7) | 0.47396 (13) | 0.0378 (4) | |
O4 | 0.2632 (2) | 0.26317 (7) | 0.56000 (14) | 0.0432 (5) | |
N11 | 0.8971 (2) | 0.12291 (10) | 0.60727 (18) | 0.0476 (6) | |
H11 | 0.9894 | 0.1140 | 0.6121 | 0.057* | |
N13 | 0.6481 (2) | 0.14071 (9) | 0.53555 (16) | 0.0376 (5) | |
N21 | 0.6475 (3) | 0.22281 (10) | 0.21847 (17) | 0.0483 (6) | |
H21 | 0.6642 | 0.2250 | 0.1611 | 0.058* | |
N23 | 0.5536 (2) | 0.19254 (9) | 0.33624 (15) | 0.0358 (5) | |
N31 | 0.5808 (3) | −0.01106 (10) | 0.3742 (2) | 0.0653 (8) | |
H31 | 0.6295 | −0.0391 | 0.4038 | 0.078* | |
N33 | 0.4830 (2) | 0.07062 (8) | 0.35698 (16) | 0.0377 (5) | |
N41 | 0.0224 (3) | 0.18216 (10) | 0.17191 (18) | 0.0500 (6) | |
H41 | −0.0315 | 0.2046 | 0.1273 | 0.060* | |
N43 | 0.2224 (2) | 0.14783 (9) | 0.29398 (16) | 0.0385 (5) | |
C1 | 0.2260 (3) | 0.12385 (10) | 0.53656 (19) | 0.0334 (6) | |
C2 | 0.1554 (3) | 0.17827 (10) | 0.5000 (2) | 0.0364 (6) | |
H2A | 0.0919 | 0.1756 | 0.4286 | 0.044* | |
H2B | 0.0890 | 0.1882 | 0.5387 | 0.044* | |
C3 | 0.2747 (3) | 0.22196 (10) | 0.51143 (18) | 0.0314 (6) | |
C12 | 0.7767 (3) | 0.12673 (11) | 0.5212 (2) | 0.0410 (6) | |
H12 | 0.7833 | 0.1201 | 0.4568 | 0.049* | |
C14 | 0.6039 (3) | 0.16449 (12) | 0.7018 (2) | 0.0438 (7) | |
H14 | 0.4996 | 0.1723 | 0.6730 | 0.053* | |
C15 | 0.6787 (4) | 0.16920 (14) | 0.8055 (2) | 0.0547 (8) | |
H15 | 0.6239 | 0.1808 | 0.8471 | 0.066* | |
C16 | 0.8334 (4) | 0.15712 (16) | 0.8495 (2) | 0.0673 (10) | |
H16 | 0.8800 | 0.1607 | 0.9199 | 0.081* | |
C17 | 0.9195 (4) | 0.14003 (15) | 0.7915 (2) | 0.0640 (9) | |
H17 | 1.0233 | 0.1315 | 0.8211 | 0.077* | |
C18 | 0.8454 (3) | 0.13607 (11) | 0.6872 (2) | 0.0426 (7) | |
C19 | 0.6891 (3) | 0.14767 (11) | 0.64135 (19) | 0.0356 (6) | |
C22 | 0.5631 (3) | 0.18557 (11) | 0.2449 (2) | 0.0408 (6) | |
H22 | 0.5157 | 0.1574 | 0.2023 | 0.049* | |
C24 | 0.6794 (3) | 0.26330 (12) | 0.4683 (2) | 0.0458 (7) | |
H24 | 0.6415 | 0.2512 | 0.5188 | 0.055* | |
C25 | 0.7733 (4) | 0.30748 (13) | 0.4837 (2) | 0.0592 (9) | |
H25 | 0.7990 | 0.3254 | 0.5460 | 0.071* | |
C26 | 0.8308 (4) | 0.32622 (15) | 0.4090 (3) | 0.0660 (10) | |
H26 | 0.8947 | 0.3560 | 0.4228 | 0.079* | |
C27 | 0.7956 (4) | 0.30180 (14) | 0.3159 (3) | 0.0603 (9) | |
H27 | 0.8322 | 0.3146 | 0.2653 | 0.072* | |
C28 | 0.7020 (3) | 0.25676 (12) | 0.3006 (2) | 0.0421 (7) | |
C29 | 0.6433 (3) | 0.23761 (11) | 0.37456 (19) | 0.0360 (6) | |
C32 | 0.5630 (3) | 0.03383 (11) | 0.4197 (2) | 0.0489 (7) | |
H32 | 0.6037 | 0.0388 | 0.4901 | 0.059* | |
C34 | 0.3557 (4) | 0.06445 (13) | 0.1634 (2) | 0.0539 (8) | |
H34 | 0.3105 | 0.0981 | 0.1540 | 0.065* | |
C35 | 0.3374 (5) | 0.03078 (15) | 0.0822 (3) | 0.0774 (11) | |
H35 | 0.2781 | 0.0418 | 0.0169 | 0.093* | |
C36 | 0.4058 (6) | −0.01994 (16) | 0.0953 (3) | 0.0916 (14) | |
H36 | 0.3933 | −0.0414 | 0.0383 | 0.110* | |
C37 | 0.4901 (5) | −0.03839 (15) | 0.1896 (3) | 0.0814 (12) | |
H37 | 0.5341 | −0.0722 | 0.1986 | 0.098* | |
C38 | 0.5074 (4) | −0.00444 (11) | 0.2717 (2) | 0.0532 (8) | |
C39 | 0.4440 (3) | 0.04673 (11) | 0.2604 (2) | 0.0413 (6) | |
C42 | 0.1678 (3) | 0.18911 (11) | 0.2344 (2) | 0.0406 (6) | |
H42 | 0.2243 | 0.2200 | 0.2354 | 0.049* | |
C44 | 0.0902 (4) | 0.06027 (13) | 0.3074 (3) | 0.0604 (9) | |
H47 | 0.1737 | 0.0448 | 0.3572 | 0.072* | |
C45 | −0.0487 (4) | 0.03403 (15) | 0.2691 (3) | 0.0791 (11) | |
H46 | −0.0600 | 0.0006 | 0.2947 | 0.095* | |
C46 | −0.1734 (4) | 0.05690 (18) | 0.1920 (3) | 0.0827 (12) | |
H45 | −0.2654 | 0.0380 | 0.1675 | 0.099* | |
C47 | −0.1639 (4) | 0.10582 (16) | 0.1521 (3) | 0.0677 (10) | |
H44 | −0.2465 | 0.1206 | 0.1005 | 0.081* | |
C48 | −0.0247 (3) | 0.13259 (12) | 0.1923 (2) | 0.0463 (7) | |
C49 | 0.1008 (3) | 0.11084 (11) | 0.2688 (2) | 0.0429 (7) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Co | 0.02617 (17) | 0.02967 (18) | 0.02670 (17) | 0.00307 (15) | 0.01149 (13) | 0.00153 (15) |
O1 | 0.0352 (10) | 0.0380 (10) | 0.0429 (10) | 0.0089 (8) | 0.0192 (8) | 0.0044 (8) |
O2 | 0.0465 (11) | 0.0525 (13) | 0.0680 (14) | 0.0117 (9) | 0.0357 (10) | 0.0239 (11) |
O3 | 0.0344 (9) | 0.0391 (10) | 0.0454 (11) | −0.0018 (8) | 0.0205 (8) | −0.0019 (8) |
O4 | 0.0467 (11) | 0.0441 (11) | 0.0445 (11) | −0.0051 (9) | 0.0229 (9) | −0.0138 (9) |
N11 | 0.0289 (12) | 0.0657 (17) | 0.0490 (14) | 0.0058 (11) | 0.0141 (11) | 0.0035 (12) |
N13 | 0.0315 (11) | 0.0485 (14) | 0.0356 (12) | 0.0052 (10) | 0.0150 (9) | 0.0019 (10) |
N21 | 0.0570 (15) | 0.0619 (16) | 0.0350 (13) | −0.0100 (12) | 0.0274 (11) | −0.0006 (12) |
N23 | 0.0375 (12) | 0.0415 (13) | 0.0307 (11) | −0.0016 (10) | 0.0146 (10) | −0.0006 (9) |
N31 | 0.087 (2) | 0.0335 (15) | 0.0652 (18) | 0.0167 (14) | 0.0125 (16) | 0.0073 (13) |
N33 | 0.0429 (12) | 0.0357 (12) | 0.0359 (12) | 0.0051 (10) | 0.0149 (10) | 0.0047 (10) |
N41 | 0.0452 (14) | 0.0491 (15) | 0.0466 (14) | 0.0097 (12) | 0.0031 (12) | 0.0070 (12) |
N43 | 0.0403 (12) | 0.0355 (12) | 0.0390 (12) | 0.0022 (11) | 0.0119 (10) | 0.0021 (11) |
C1 | 0.0285 (13) | 0.0364 (14) | 0.0357 (14) | 0.0022 (11) | 0.0114 (11) | 0.0012 (12) |
C2 | 0.0280 (13) | 0.0373 (15) | 0.0473 (15) | 0.0033 (11) | 0.0172 (12) | 0.0014 (12) |
C3 | 0.0306 (13) | 0.0329 (14) | 0.0284 (13) | 0.0035 (11) | 0.0068 (11) | 0.0036 (11) |
C12 | 0.0351 (15) | 0.0503 (17) | 0.0401 (15) | 0.0019 (12) | 0.0158 (12) | 0.0006 (13) |
C14 | 0.0374 (15) | 0.0579 (18) | 0.0393 (15) | 0.0022 (13) | 0.0168 (12) | −0.0032 (13) |
C15 | 0.0528 (18) | 0.075 (2) | 0.0403 (16) | −0.0084 (16) | 0.0213 (14) | −0.0086 (16) |
C16 | 0.055 (2) | 0.105 (3) | 0.0366 (17) | −0.0173 (19) | 0.0086 (15) | −0.0037 (17) |
C17 | 0.0374 (16) | 0.100 (3) | 0.0466 (18) | −0.0023 (18) | 0.0033 (14) | 0.0038 (19) |
C18 | 0.0306 (14) | 0.0523 (18) | 0.0440 (16) | −0.0020 (12) | 0.0114 (12) | 0.0050 (13) |
C19 | 0.0320 (13) | 0.0387 (14) | 0.0346 (13) | −0.0040 (12) | 0.0092 (11) | 0.0019 (12) |
C22 | 0.0463 (16) | 0.0454 (17) | 0.0340 (15) | −0.0037 (13) | 0.0179 (13) | −0.0020 (12) |
C24 | 0.0482 (17) | 0.0571 (19) | 0.0347 (15) | −0.0092 (14) | 0.0173 (13) | −0.0035 (13) |
C25 | 0.0586 (19) | 0.070 (2) | 0.0481 (18) | −0.0238 (17) | 0.0160 (16) | −0.0149 (16) |
C26 | 0.062 (2) | 0.070 (2) | 0.069 (2) | −0.0328 (18) | 0.0260 (18) | −0.0122 (19) |
C27 | 0.060 (2) | 0.070 (2) | 0.059 (2) | −0.0267 (17) | 0.0308 (16) | 0.0000 (17) |
C28 | 0.0382 (15) | 0.0541 (18) | 0.0379 (15) | −0.0040 (13) | 0.0179 (12) | 0.0017 (13) |
C29 | 0.0323 (13) | 0.0420 (15) | 0.0354 (14) | −0.0045 (12) | 0.0136 (11) | 0.0000 (12) |
C32 | 0.0608 (19) | 0.0380 (17) | 0.0449 (17) | 0.0027 (14) | 0.0135 (15) | 0.0061 (14) |
C34 | 0.074 (2) | 0.0447 (17) | 0.0405 (16) | −0.0017 (16) | 0.0152 (15) | −0.0006 (14) |
C35 | 0.118 (3) | 0.065 (2) | 0.0445 (19) | −0.012 (2) | 0.021 (2) | −0.0072 (17) |
C36 | 0.150 (4) | 0.059 (3) | 0.065 (3) | −0.010 (3) | 0.035 (3) | −0.029 (2) |
C37 | 0.121 (3) | 0.045 (2) | 0.080 (3) | 0.004 (2) | 0.035 (3) | −0.0166 (19) |
C38 | 0.072 (2) | 0.0332 (16) | 0.0586 (19) | 0.0012 (15) | 0.0274 (17) | −0.0017 (14) |
C39 | 0.0503 (17) | 0.0335 (15) | 0.0437 (16) | −0.0001 (13) | 0.0204 (13) | −0.0012 (12) |
C42 | 0.0398 (15) | 0.0409 (16) | 0.0409 (15) | 0.0039 (13) | 0.0133 (13) | 0.0009 (13) |
C44 | 0.059 (2) | 0.0462 (19) | 0.066 (2) | −0.0118 (16) | 0.0063 (16) | 0.0037 (16) |
C45 | 0.081 (3) | 0.062 (2) | 0.084 (3) | −0.028 (2) | 0.014 (2) | 0.002 (2) |
C46 | 0.061 (2) | 0.091 (3) | 0.084 (3) | −0.031 (2) | 0.007 (2) | −0.011 (2) |
C47 | 0.0457 (19) | 0.077 (3) | 0.067 (2) | −0.0058 (18) | 0.0007 (16) | −0.0081 (19) |
C48 | 0.0398 (16) | 0.0510 (19) | 0.0434 (16) | 0.0039 (13) | 0.0076 (13) | −0.0036 (13) |
C49 | 0.0424 (16) | 0.0427 (17) | 0.0411 (15) | −0.0022 (13) | 0.0106 (13) | −0.0027 (13) |
Co—O3 | 2.0684 (18) | C15—H15 | 0.93 |
Co—O1 | 2.0741 (17) | C16—C17 | 1.371 (5) |
Co—N43 | 2.098 (2) | C16—H16 | 0.93 |
Co—N23 | 2.122 (2) | C17—C18 | 1.381 (4) |
Co—N13 | 2.129 (2) | C17—H17 | 0.93 |
Co—N33 | 2.138 (2) | C18—C19 | 1.397 (3) |
O1—C1 | 1.264 (3) | C22—H22 | 0.93 |
O2—C1 | 1.242 (3) | C24—C25 | 1.376 (4) |
O3—C3 | 1.254 (3) | C24—C29 | 1.387 (4) |
O4—C3 | 1.256 (3) | C24—H24 | 0.93 |
N11—C12 | 1.334 (3) | C25—C26 | 1.392 (4) |
N11—C18 | 1.383 (4) | C25—H25 | 0.93 |
N11—H11 | 0.86 | C26—C27 | 1.366 (4) |
N13—C12 | 1.311 (3) | C26—H26 | 0.93 |
N13—C19 | 1.398 (3) | C27—C28 | 1.392 (4) |
N21—C22 | 1.341 (3) | C27—H27 | 0.93 |
N21—C28 | 1.375 (3) | C28—C29 | 1.393 (4) |
N21—H21 | 0.86 | C32—H32 | 0.93 |
N23—C22 | 1.309 (3) | C34—C35 | 1.371 (4) |
N23—C29 | 1.396 (3) | C34—C39 | 1.391 (4) |
N31—C32 | 1.325 (4) | C34—H34 | 0.93 |
N31—C38 | 1.365 (4) | C35—C36 | 1.403 (5) |
N31—H31 | 0.86 | C35—H35 | 0.93 |
N33—C32 | 1.312 (3) | C36—C37 | 1.359 (5) |
N33—C39 | 1.399 (3) | C36—H36 | 0.93 |
N41—C42 | 1.342 (3) | C37—C38 | 1.386 (4) |
N41—C48 | 1.375 (4) | C37—H37 | 0.93 |
N41—H41 | 0.86 | C38—C39 | 1.396 (4) |
N43—C42 | 1.314 (3) | C42—H42 | 0.93 |
N43—C49 | 1.405 (3) | C44—C45 | 1.377 (4) |
C1—C2 | 1.523 (3) | C44—C49 | 1.391 (4) |
C2—C3 | 1.521 (3) | C44—H47 | 0.93 |
C2—H2A | 0.97 | C45—C46 | 1.404 (5) |
C2—H2B | 0.97 | C45—H46 | 0.93 |
C12—H12 | 0.93 | C46—C47 | 1.359 (5) |
C14—C15 | 1.376 (4) | C46—H45 | 0.93 |
C14—C19 | 1.390 (4) | C47—C48 | 1.389 (4) |
C14—H14 | 0.93 | C47—H44 | 0.93 |
C15—C16 | 1.383 (4) | C48—C49 | 1.392 (4) |
O3—Co—O1 | 85.73 (7) | C17—C18—C19 | 122.5 (3) |
O3—Co—N43 | 90.56 (8) | N11—C18—C19 | 105.2 (2) |
O1—Co—N43 | 90.19 (8) | C14—C19—N13 | 131.3 (2) |
O3—Co—N23 | 88.49 (8) | C14—C19—C18 | 119.5 (2) |
O1—Co—N23 | 172.16 (8) | N13—C19—C18 | 109.2 (2) |
N43—Co—N23 | 95.17 (8) | N23—C22—N21 | 113.7 (2) |
O3—Co—N13 | 90.60 (8) | N23—C22—H22 | 123.1 |
O1—Co—N13 | 88.36 (7) | N21—C22—H22 | 123.1 |
N43—Co—N13 | 178.07 (9) | C25—C24—C29 | 117.4 (3) |
N23—Co—N13 | 86.40 (8) | C25—C24—H24 | 121.3 |
O3—Co—N33 | 175.92 (8) | C29—C24—H24 | 121.3 |
O1—Co—N33 | 90.19 (7) | C24—C25—C26 | 122.1 (3) |
N43—Co—N33 | 89.32 (8) | C24—C25—H25 | 119.0 |
N23—Co—N33 | 95.59 (8) | C26—C25—H25 | 119.0 |
N13—Co—N33 | 89.41 (8) | C27—C26—C25 | 121.5 (3) |
C1—O1—Co | 127.34 (17) | C27—C26—H26 | 119.3 |
C3—O3—Co | 127.39 (17) | C25—C26—H26 | 119.3 |
C12—N11—C18 | 107.1 (2) | C26—C27—C28 | 116.5 (3) |
C12—N11—H11 | 126.5 | C26—C27—H27 | 121.7 |
C18—N11—H11 | 126.5 | C28—C27—H27 | 121.7 |
C12—N13—C19 | 104.5 (2) | N21—C28—C29 | 105.8 (2) |
C12—N13—Co | 122.45 (19) | N21—C28—C27 | 131.6 (3) |
C19—N13—Co | 133.02 (17) | C29—C28—C27 | 122.6 (3) |
C22—N21—C28 | 106.8 (2) | C24—C29—C28 | 119.9 (2) |
C22—N21—H21 | 126.6 | C24—C29—N23 | 131.2 (2) |
C28—N21—H21 | 126.6 | C28—C29—N23 | 108.9 (2) |
C22—N23—C29 | 104.7 (2) | N33—C32—N31 | 114.3 (3) |
C22—N23—Co | 128.66 (19) | N33—C32—H32 | 122.8 |
C29—N23—Co | 126.61 (16) | N31—C32—H32 | 122.8 |
C32—N31—C38 | 107.2 (2) | C35—C34—C39 | 118.0 (3) |
C32—N31—H31 | 126.4 | C35—C34—H34 | 121.0 |
C38—N31—H31 | 126.4 | C39—C34—H34 | 121.0 |
C32—N33—C39 | 104.0 (2) | C34—C35—C36 | 121.6 (3) |
C32—N33—Co | 120.99 (19) | C34—C35—H35 | 119.2 |
C39—N33—Co | 134.97 (17) | C36—C35—H35 | 119.2 |
C42—N41—C48 | 107.4 (2) | C37—C36—C35 | 121.4 (3) |
C42—N41—H41 | 126.3 | C37—C36—H36 | 119.3 |
C48—N41—H41 | 126.3 | C35—C36—H36 | 119.3 |
C42—N43—C49 | 104.8 (2) | C36—C37—C38 | 116.9 (3) |
C42—N43—Co | 125.23 (18) | C36—C37—H37 | 121.5 |
C49—N43—Co | 129.37 (18) | C38—C37—H37 | 121.5 |
O2—C1—O1 | 122.3 (2) | N31—C38—C37 | 131.4 (3) |
O2—C1—C2 | 118.4 (2) | N31—C38—C39 | 105.8 (3) |
O1—C1—C2 | 119.2 (2) | C37—C38—C39 | 122.8 (3) |
C3—C2—C1 | 113.3 (2) | C34—C39—C38 | 119.3 (3) |
C3—C2—H2A | 108.9 | C34—C39—N33 | 132.0 (3) |
C1—C2—H2A | 108.9 | C38—C39—N33 | 108.7 (2) |
C3—C2—H2B | 108.9 | N43—C42—N41 | 113.2 (3) |
C1—C2—H2B | 108.9 | N43—C42—H42 | 123.4 |
H2A—C2—H2B | 107.7 | N41—C42—H42 | 123.4 |
O3—C3—O4 | 123.2 (2) | C45—C44—C49 | 117.5 (3) |
O3—C3—C2 | 119.4 (2) | C45—C44—H47 | 121.3 |
O4—C3—C2 | 117.4 (2) | C49—C44—H47 | 121.3 |
N13—C12—N11 | 114.1 (3) | C44—C45—C46 | 121.2 (4) |
N13—C12—H12 | 123.0 | C44—C45—H46 | 119.4 |
N11—C12—H12 | 123.0 | C46—C45—H46 | 119.4 |
C15—C14—C19 | 117.9 (3) | C47—C46—C45 | 122.0 (3) |
C15—C14—H14 | 121.0 | C47—C46—H45 | 119.0 |
C19—C14—H14 | 121.0 | C45—C46—H45 | 119.0 |
C14—C15—C16 | 121.7 (3) | C46—C47—C48 | 116.6 (3) |
C14—C15—H15 | 119.2 | C46—C47—H44 | 121.7 |
C16—C15—H15 | 119.2 | C48—C47—H44 | 121.7 |
C17—C16—C15 | 121.4 (3) | N41—C48—C47 | 131.7 (3) |
C17—C16—H16 | 119.3 | N41—C48—C49 | 105.7 (2) |
C15—C16—H16 | 119.3 | C47—C48—C49 | 122.5 (3) |
C16—C17—C18 | 117.0 (3) | C44—C49—C48 | 120.1 (3) |
C16—C17—H17 | 121.5 | C44—C49—N43 | 131.1 (3) |
C18—C17—H17 | 121.5 | C48—C49—N43 | 108.8 (2) |
C17—C18—N11 | 132.3 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N11—H11···O2i | 0.86 | 1.86 | 2.709 (3) | 169 |
N21—H21···O4ii | 0.86 | 1.93 | 2.764 (3) | 162 |
N31—H31···O1iii | 0.86 | 2.06 | 2.870 (3) | 156 |
N31—H31···O2iii | 0.86 | 2.31 | 3.045 (3) | 143 |
N41—H41···O4iv | 0.86 | 1.98 | 2.741 (3) | 147 |
Symmetry codes: (i) x+1, y, z; (ii) x+1/2, −y+1/2, z−1/2; (iii) −x+1, −y, −z+1; (iv) x−1/2, −y+1/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | [Co(C3H2O4)(C7H6N2)4] |
Mr | 633.53 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 295 |
a, b, c (Å) | 9.2068 (12), 25.0492 (16), 13.8555 (13) |
β (°) | 109.444 (15) |
V (Å3) | 3013.2 (6) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.62 |
Crystal size (mm) | 0.22 × 0.15 × 0.10 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID diffractometer |
Absorption correction | Multi-scan (ABSCOR; Higashi, 1995) |
Tmin, Tmax | 0.868, 0.932 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 20267, 5357, 4289 |
Rint | 0.051 |
(sin θ/λ)max (Å−1) | 0.599 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.045, 0.092, 1.09 |
No. of reflections | 5357 |
No. of parameters | 397 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.29, −0.29 |
Computer programs: PROCESS-AUTO (Rigaku, 1998), PROCESS-AUTO, CrystalStructure (Rigaku/MSC and Rigaku, 2002), SIR92 (Altomare et al., 1993), SHELXL97 (Sheldrick, 1997), ORTEP-3 for Windows (Farrugia, 1997), WinGX (Farrugia, 1999).
Co—O3 | 2.0684 (18) | Co—N23 | 2.122 (2) |
Co—O1 | 2.0741 (17) | Co—N13 | 2.129 (2) |
Co—N43 | 2.098 (2) | Co—N33 | 2.138 (2) |
C12—N13—Co | 122.45 (19) | C32—N33—Co | 120.99 (19) |
C19—N13—Co | 133.02 (17) | C39—N33—Co | 134.97 (17) |
C22—N23—Co | 128.66 (19) | C42—N43—Co | 125.23 (18) |
C29—N23—Co | 126.61 (16) | C49—N43—Co | 129.37 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
N11—H11···O2i | 0.86 | 1.86 | 2.709 (3) | 169 |
N21—H21···O4ii | 0.86 | 1.93 | 2.764 (3) | 162 |
N31—H31···O1iii | 0.86 | 2.06 | 2.870 (3) | 156 |
N31—H31···O2iii | 0.86 | 2.31 | 3.045 (3) | 143 |
N41—H41···O4iv | 0.86 | 1.98 | 2.741 (3) | 147 |
Symmetry codes: (i) x+1, y, z; (ii) x+1/2, −y+1/2, z−1/2; (iii) −x+1, −y, −z+1; (iv) x−1/2, −y+1/2, z−1/2. |
Aromatic π–π-stacking interactions have been observed in a number of metal complexes with aromatic heteropolycyclic ligands, such as phenathroline, bithiazole and benzimidazole (Chen et al., 2003). As part of our investigation into the π–π-stacking interactions in metal complexes, a new CoII complex with benzimidazole has recently been prepared. However, its X-ray structure, presented here, shows no π–π stacking occurring in the complex.
The molecular structure of (I) is presented in Fig. 1. Four benzimidazole molecules and one malonate dianion form an octahedral coordination geometry around a CoII atom. The Co—N13—C19 angle of 133.02 (17)° is much larger than the Co—N13—C12 angle of 122.45 (19)°. Likewise the Co—N33—C39 angle of 134.97 (17)° is much larger than the Co—N33—C32 angle of 120.99 (19)°. The Co—N bonds involving the N13 and N33 atoms are somewhat longer than other two Co—N bonds (Table 1).
The malonate dianion chelates to the CoII atom with both terminal carboxyl groups in a boat configuration. The uncoordinated carboxyl O atoms of the malonate are hydrogen bonded to the neighboring benzimidazole ligands, as shown in Fig. 2. A three-centered hydrogen bond occurs between benzimidazole atom N31 and the carboxyl groups (see Table 2). The molecular packing diagram is illustrated in Fig. 3. No π–π stacking is observed between benzimidazole rings in the crystal.