metal-organic compounds
Bis(4-aminopyridine){2,2′-[1,2-phenylenebis(nitrilomethanylylidene)]diphenolato}cobalt(III) nitrate
aDepartment of Bio & Nano Chemistry, College of Natural Sciences, Kookmin University, 861-1 Jeongneung-dong, Seongbuk-gu, Seoul 136-702, Republic of Korea
*Correspondence e-mail: yoona@kookmin.ac.kr
In the title compound, [Co(C20H14N2O2)(C5H6N2)2]NO3, the CoIII atom is coordinated in a slightly elongated octahedral geometry by the N2O2 donor set of the tetradentate Schiff base ligand and by the pyridine N atoms of two trans-arranged monodentate 4-aminopyridine molecules. The pyridine rings are aligned nearly perpendicularly to each other [dihedral angle = 82.28 (13)°]. The phenoxy rings form dihedral angles of 12.37 (12) and 12.16 (14)° with the phenylene ring. In the crystal, N—H⋯O and C—H⋯O hydrogen bonds link the ions into a three-dimensional network.
Related literature
For transition metal Schiff-base complexes with a tetradentate N2O2 ligand, see: Schenk et al. (2007); Yamada et al. (1999); Polson et al. (1997); Hirota et al. (1998). For related cobalt complexes, see: Amirnasr et al. (2001); Khandar et al. (2007); Salehi et al. (2009). For related dimeric cobalt complexes, see: Shimakoshi et al. (2005).
Experimental
Crystal data
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Data collection: SMART (Bruker, 2000); cell SAINT (Bruker, 2000); 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.
Supporting information
10.1107/S1600536813020953/rz5078sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813020953/rz5078Isup2.hkl
To a mixture of the Schiff base ligand (0.108 g, 0.343 mmol ) and triethylamine (0.105 mL) in MeOH, (Co(NO3)2.6H2O (0.100 g, 0.343 mmol) was added and heated to 70°C. After two hours, 4-aminopyridine (0.064 g, 0.680 mmol) was added and heating and stirring continued for two hours. The resulting dark reddish-brown solid was crystallized in acetonitrile-diethyl ether (1:1 v/v) by diffusion method. Yield = 0.090 g (47 %). 1H-NMR (DMSO-d6, δ): 8.87 (s, 2H), 8.30 (d, J = 5.7, 4H), 7.41 (m, 2H), 7.30 (m, 4H), 7.15 (m, 2H), 6.81 (m, 4H), 6.26 (d, J = 5.7, 4H). FT-IR (KBr, cm-1): 3470 (m), 3393(w), 3364(m), 3203(s), 3062(w), 3020(w), 2966(w), 1630 (s), 1607(s), 1571(s), 1517(s), 1488(m), 1464(m), 1436(m), 1329(s), 1204(s), 1181(m), 1145(s), 1056(m), 1021(m), 968(w), 920(w), 826(m), 749(s), 566(w), 542(m).
Hydrogen atoms bound to N were located in a difference Fourier map and refined isotropically with distance restraints (N—H = 0.86-0.87 Å) and Uiso(H) = 1.5Ueq(N). All other H atoms were introduced at their calculated positions and were then refined as riding, with C—H = 0.93 Å and Uiso(H) = 1.2Ueq(N) for aromatic H atoms. The crystals of the title compound systematically diffracted very poorly, resulting in a low observed/unique reflection ratio (36%).
Data collection: SMART (Bruker, 2000); cell
SAINT (Bruker, 2000); data reduction: SAINT (Bruker, 2000); 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 (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound showing displacement ellipsoids drawn at the 50% probability level. H atoms are omitted for clarity. | |
Fig. 2. Partial packing diagram of the title compound showing the hydrogen bonding network (dotted lines). |
[Co(C20H14N2O2)(C5H6N2)2]NO3 | F(000) = 1288 |
Mr = 623.51 | Dx = 1.489 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 2630 reflections |
a = 13.072 (3) Å | θ = 2.3–24.3° |
b = 15.136 (3) Å | µ = 0.67 mm−1 |
c = 17.192 (6) Å | T = 293 K |
β = 125.14 (2)° | Block, red |
V = 2781.6 (15) Å3 | 0.21 × 0.17 × 0.11 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 6917 independent reflections |
Radiation source: fine-focus sealed tube | 2486 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.110 |
ϕ and ω scans | θmax = 28.3°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | h = −17→17 |
Tmin = 0.826, Tmax = 1.00 | k = −20→17 |
20500 measured reflections | l = −22→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)] = 0.050 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.084 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.71 | w = 1/[σ2(Fo2) + (0.P)2] where P = (Fo2 + 2Fc2)/3 |
6917 reflections | (Δ/σ)max = 0.001 |
404 parameters | Δρmax = 0.79 e Å−3 |
2 restraints | Δρmin = −0.70 e Å−3 |
[Co(C20H14N2O2)(C5H6N2)2]NO3 | V = 2781.6 (15) Å3 |
Mr = 623.51 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 13.072 (3) Å | µ = 0.67 mm−1 |
b = 15.136 (3) Å | T = 293 K |
c = 17.192 (6) Å | 0.21 × 0.17 × 0.11 mm |
β = 125.14 (2)° |
Bruker SMART CCD area-detector diffractometer | 6917 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | 2486 reflections with I > 2σ(I) |
Tmin = 0.826, Tmax = 1.00 | Rint = 0.110 |
20500 measured reflections |
R[F2 > 2σ(F2)] = 0.050 | 2 restraints |
wR(F2) = 0.084 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.71 | Δρmax = 0.79 e Å−3 |
6917 reflections | Δρmin = −0.70 e Å−3 |
404 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 | 0.36975 (4) | 0.75435 (4) | 0.33861 (3) | 0.02774 (14) | |
O1 | 0.5005 (2) | 0.83721 (16) | 0.40079 (16) | 0.0318 (7) | |
O2 | 0.3029 (2) | 0.83328 (16) | 0.23490 (16) | 0.0338 (7) | |
N1 | 0.4376 (2) | 0.67753 (19) | 0.44404 (19) | 0.0241 (8) | |
N2 | 0.2362 (3) | 0.6726 (2) | 0.2758 (2) | 0.0260 (8) | |
N3 | 0.2806 (3) | 0.8170 (2) | 0.3824 (2) | 0.0282 (8) | |
N4 | 0.4594 (3) | 0.6910 (2) | 0.29547 (19) | 0.0273 (8) | |
N5 | 0.0804 (4) | 0.9424 (3) | 0.4717 (3) | 0.0423 (11) | |
N6 | 0.6508 (5) | 0.5547 (4) | 0.2043 (3) | 0.0591 (14) | |
C8 | 0.3526 (3) | 0.6096 (2) | 0.4287 (2) | 0.0244 (9) | |
C9 | 0.3708 (3) | 0.5500 (2) | 0.4972 (3) | 0.0305 (10) | |
H9 | 0.4429 | 0.5526 | 0.5589 | 0.037* | |
C10 | 0.2805 (3) | 0.4866 (3) | 0.4726 (3) | 0.0329 (10) | |
H10 | 0.2934 | 0.4456 | 0.5177 | 0.039* | |
C11 | 0.1713 (3) | 0.4837 (3) | 0.3816 (3) | 0.0346 (11) | |
H11 | 0.1106 | 0.4414 | 0.3659 | 0.041* | |
C12 | 0.1533 (3) | 0.5433 (2) | 0.3149 (2) | 0.0307 (10) | |
H12 | 0.0800 | 0.5412 | 0.2538 | 0.037* | |
C13 | 0.2432 (3) | 0.6070 (3) | 0.3372 (2) | 0.0256 (9) | |
C14 | 0.1437 (3) | 0.6764 (3) | 0.1850 (2) | 0.0297 (10) | |
H14 | 0.0880 | 0.6291 | 0.1597 | 0.036* | |
C15 | 0.1218 (3) | 0.7465 (3) | 0.1223 (2) | 0.0291 (9) | |
C16 | 0.0092 (3) | 0.7426 (3) | 0.0285 (2) | 0.0420 (11) | |
H16 | −0.0428 | 0.6936 | 0.0103 | 0.050* | |
C17 | −0.0232 (4) | 0.8088 (3) | −0.0344 (3) | 0.0529 (14) | |
H17 | −0.0970 | 0.8054 | −0.0952 | 0.063* | |
C18 | 0.0543 (4) | 0.8822 (3) | −0.0077 (3) | 0.0660 (16) | |
H18 | 0.0323 | 0.9274 | −0.0513 | 0.079* | |
C19 | 0.1629 (4) | 0.8887 (3) | 0.0820 (3) | 0.0520 (13) | |
H19 | 0.2130 | 0.9384 | 0.0983 | 0.062* | |
C20 | 0.1996 (3) | 0.8220 (3) | 0.1496 (3) | 0.0324 (10) | |
C21 | 0.3351 (3) | 0.8436 (2) | 0.4730 (2) | 0.0351 (11) | |
H21 | 0.4208 | 0.8347 | 0.5160 | 0.042* | |
C22 | 0.2729 (3) | 0.8826 (3) | 0.5055 (3) | 0.0344 (11) | |
H22 | 0.3162 | 0.8986 | 0.5692 | 0.041* | |
C23 | 0.1447 (3) | 0.8989 (3) | 0.4443 (3) | 0.0294 (10) | |
C24 | 0.0876 (3) | 0.8706 (2) | 0.3502 (2) | 0.0306 (10) | |
H24 | 0.0020 | 0.8781 | 0.3059 | 0.037* | |
C25 | 0.1568 (3) | 0.8324 (3) | 0.3237 (2) | 0.0334 (10) | |
H25 | 0.1158 | 0.8155 | 0.2604 | 0.040* | |
C26 | 0.4613 (3) | 0.6024 (3) | 0.2911 (2) | 0.0288 (10) | |
H26 | 0.4171 | 0.5707 | 0.3091 | 0.035* | |
C27 | 0.5235 (3) | 0.5549 (3) | 0.2622 (2) | 0.0325 (10) | |
H27 | 0.5208 | 0.4935 | 0.2610 | 0.039* | |
C28 | 0.5905 (4) | 0.6002 (3) | 0.2347 (3) | 0.0367 (11) | |
C29 | 0.5908 (4) | 0.6917 (3) | 0.2400 (3) | 0.0384 (11) | |
H29 | 0.6358 | 0.7246 | 0.2236 | 0.046* | |
C30 | 0.5258 (3) | 0.7341 (3) | 0.2689 (2) | 0.0347 (10) | |
H30 | 0.5271 | 0.7955 | 0.2705 | 0.042* | |
C44 | 0.5503 (3) | 0.6828 (2) | 0.5221 (2) | 0.0266 (9) | |
H44 | 0.5756 | 0.6389 | 0.5676 | 0.032* | |
C45 | 0.6375 (3) | 0.7514 (3) | 0.5425 (2) | 0.0248 (8) | |
C46 | 0.7566 (3) | 0.7467 (3) | 0.6315 (2) | 0.0328 (9) | |
H46 | 0.7752 | 0.6986 | 0.6713 | 0.039* | |
C47 | 0.8436 (3) | 0.8113 (3) | 0.6593 (3) | 0.0383 (11) | |
H47 | 0.9207 | 0.8079 | 0.7179 | 0.046* | |
C48 | 0.8154 (3) | 0.8826 (3) | 0.5988 (3) | 0.0438 (12) | |
H48 | 0.8748 | 0.9267 | 0.6172 | 0.053* | |
C49 | 0.7023 (3) | 0.8888 (3) | 0.5131 (3) | 0.0379 (11) | |
H49 | 0.6864 | 0.9369 | 0.4740 | 0.045* | |
C50 | 0.6088 (3) | 0.8243 (3) | 0.4824 (3) | 0.0269 (10) | |
O3 | 0.6426 (2) | 0.59009 (18) | 0.72076 (18) | 0.0473 (8) | |
O5 | 0.8220 (3) | 0.6406 (2) | 0.8288 (2) | 0.0772 (11) | |
O4 | 0.7833 (3) | 0.5069 (2) | 0.83658 (19) | 0.0651 (10) | |
N25 | 0.7482 (3) | 0.5781 (2) | 0.7972 (2) | 0.0341 (9) | |
H50A | 0.694 (3) | 0.581 (3) | 0.190 (3) | 0.052 (16)* | |
H49A | 0.646 (4) | 0.4993 (19) | 0.201 (3) | 0.08 (2)* | |
H52A | 0.112 (3) | 0.957 (2) | 0.5305 (17) | 0.041 (14)* | |
H51A | 0.000 (2) | 0.943 (3) | 0.440 (2) | 0.070 (17)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Co1 | 0.0255 (3) | 0.0291 (3) | 0.0242 (3) | −0.0007 (3) | 0.0117 (2) | 0.0000 (3) |
O1 | 0.0255 (15) | 0.0332 (18) | 0.0296 (16) | −0.0010 (13) | 0.0117 (13) | 0.0021 (14) |
O2 | 0.0329 (15) | 0.0356 (18) | 0.0245 (15) | −0.0007 (14) | 0.0118 (13) | 0.0053 (14) |
N1 | 0.0184 (17) | 0.028 (2) | 0.0200 (17) | −0.0034 (15) | 0.0074 (14) | −0.0052 (15) |
N2 | 0.0246 (18) | 0.030 (2) | 0.0220 (18) | 0.0071 (16) | 0.0129 (15) | 0.0025 (16) |
N3 | 0.0247 (18) | 0.025 (2) | 0.0253 (18) | 0.0041 (16) | 0.0089 (15) | 0.0037 (16) |
N4 | 0.0257 (18) | 0.025 (2) | 0.0263 (19) | −0.0034 (16) | 0.0120 (15) | 0.0042 (16) |
N5 | 0.034 (3) | 0.055 (3) | 0.038 (3) | 0.005 (2) | 0.021 (2) | −0.011 (2) |
N6 | 0.067 (3) | 0.058 (4) | 0.081 (4) | 0.004 (3) | 0.059 (3) | 0.003 (3) |
C8 | 0.023 (2) | 0.024 (2) | 0.026 (2) | 0.0028 (19) | 0.0146 (18) | 0.0009 (19) |
C9 | 0.026 (2) | 0.036 (3) | 0.028 (2) | −0.004 (2) | 0.0145 (19) | 0.001 (2) |
C10 | 0.041 (3) | 0.029 (3) | 0.038 (3) | 0.000 (2) | 0.028 (2) | 0.006 (2) |
C11 | 0.029 (2) | 0.033 (3) | 0.035 (3) | −0.005 (2) | 0.015 (2) | −0.004 (2) |
C12 | 0.024 (2) | 0.035 (3) | 0.024 (2) | −0.001 (2) | 0.0085 (18) | 0.005 (2) |
C13 | 0.022 (2) | 0.026 (2) | 0.024 (2) | 0.0083 (19) | 0.0107 (18) | 0.0052 (19) |
C14 | 0.026 (2) | 0.029 (3) | 0.032 (2) | 0.004 (2) | 0.015 (2) | −0.002 (2) |
C15 | 0.034 (2) | 0.029 (2) | 0.024 (2) | 0.002 (2) | 0.0167 (18) | 0.002 (2) |
C16 | 0.035 (2) | 0.047 (3) | 0.028 (2) | −0.007 (3) | 0.0094 (19) | −0.003 (3) |
C17 | 0.049 (3) | 0.058 (4) | 0.024 (3) | −0.001 (3) | 0.005 (2) | 0.015 (3) |
C18 | 0.067 (4) | 0.068 (4) | 0.037 (3) | −0.011 (3) | 0.014 (3) | 0.014 (3) |
C19 | 0.055 (3) | 0.046 (3) | 0.038 (3) | −0.013 (3) | 0.017 (2) | 0.009 (3) |
C20 | 0.037 (3) | 0.030 (3) | 0.024 (2) | 0.000 (2) | 0.014 (2) | 0.003 (2) |
C21 | 0.024 (2) | 0.038 (3) | 0.024 (2) | −0.004 (2) | 0.0025 (19) | −0.010 (2) |
C22 | 0.035 (3) | 0.038 (3) | 0.026 (2) | 0.004 (2) | 0.015 (2) | −0.005 (2) |
C23 | 0.027 (2) | 0.031 (3) | 0.028 (2) | 0.002 (2) | 0.014 (2) | 0.001 (2) |
C24 | 0.021 (2) | 0.036 (3) | 0.024 (2) | 0.006 (2) | 0.0067 (18) | −0.002 (2) |
C25 | 0.027 (2) | 0.042 (3) | 0.023 (2) | 0.006 (2) | 0.0094 (19) | −0.002 (2) |
C26 | 0.028 (2) | 0.035 (3) | 0.022 (2) | 0.003 (2) | 0.0133 (19) | 0.006 (2) |
C27 | 0.031 (2) | 0.036 (3) | 0.030 (2) | 0.002 (2) | 0.017 (2) | 0.000 (2) |
C28 | 0.032 (3) | 0.047 (3) | 0.030 (3) | 0.007 (2) | 0.017 (2) | 0.005 (2) |
C29 | 0.040 (3) | 0.049 (3) | 0.037 (3) | −0.001 (2) | 0.028 (2) | 0.006 (2) |
C30 | 0.033 (2) | 0.038 (3) | 0.030 (2) | −0.009 (2) | 0.0167 (19) | −0.003 (2) |
C44 | 0.028 (2) | 0.028 (3) | 0.024 (2) | 0.002 (2) | 0.0153 (19) | −0.0018 (19) |
C45 | 0.0214 (19) | 0.025 (2) | 0.029 (2) | −0.002 (2) | 0.0147 (17) | −0.002 (2) |
C46 | 0.025 (2) | 0.039 (3) | 0.033 (2) | 0.005 (2) | 0.0166 (18) | 0.003 (2) |
C47 | 0.018 (2) | 0.044 (3) | 0.037 (3) | −0.003 (2) | 0.0072 (19) | 0.000 (2) |
C48 | 0.023 (2) | 0.038 (3) | 0.051 (3) | −0.007 (2) | 0.010 (2) | −0.004 (2) |
C49 | 0.028 (2) | 0.036 (3) | 0.041 (3) | −0.010 (2) | 0.015 (2) | 0.000 (2) |
C50 | 0.025 (2) | 0.027 (3) | 0.030 (2) | 0.004 (2) | 0.0161 (19) | 0.001 (2) |
O3 | 0.0328 (17) | 0.050 (2) | 0.0330 (17) | −0.0014 (16) | 0.0039 (14) | 0.0093 (16) |
O5 | 0.054 (2) | 0.074 (3) | 0.065 (2) | −0.014 (2) | 0.0121 (18) | 0.006 (2) |
O4 | 0.085 (2) | 0.038 (2) | 0.040 (2) | 0.0086 (19) | 0.0172 (18) | 0.0079 (17) |
N25 | 0.034 (2) | 0.030 (2) | 0.033 (2) | −0.0099 (19) | 0.0157 (19) | −0.0033 (19) |
Co1—O1 | 1.880 (2) | C17—C18 | 1.391 (5) |
Co1—N2 | 1.890 (3) | C17—H17 | 0.9300 |
Co1—N1 | 1.890 (3) | C18—C19 | 1.372 (5) |
Co1—O2 | 1.891 (2) | C18—H18 | 0.9300 |
Co1—N3 | 1.959 (3) | C19—C20 | 1.399 (5) |
Co1—N4 | 1.960 (3) | C19—H19 | 0.9300 |
O1—C50 | 1.312 (4) | C21—C22 | 1.358 (4) |
O2—C20 | 1.313 (4) | C21—H21 | 0.9300 |
N1—C44 | 1.304 (4) | C22—C23 | 1.395 (4) |
N1—C8 | 1.423 (4) | C22—H22 | 0.9300 |
N2—C14 | 1.316 (4) | C23—C24 | 1.402 (4) |
N2—C13 | 1.414 (4) | C24—C25 | 1.356 (4) |
N3—C25 | 1.346 (4) | C24—H24 | 0.9300 |
N3—C21 | 1.348 (4) | C25—H25 | 0.9300 |
N4—C26 | 1.344 (4) | C26—C27 | 1.375 (5) |
N4—C30 | 1.358 (4) | C26—H26 | 0.9300 |
N5—C23 | 1.348 (5) | C27—C28 | 1.392 (5) |
N5—H52A | 0.87 (2) | C27—H27 | 0.9300 |
N5—H51A | 0.86 (2) | C28—C29 | 1.387 (5) |
N6—C28 | 1.357 (5) | C29—C30 | 1.367 (5) |
N6—H50A | 0.83 (3) | C29—H29 | 0.9300 |
N6—H49A | 0.84 (3) | C30—H30 | 0.9300 |
C8—C13 | 1.390 (4) | C44—C45 | 1.429 (5) |
C8—C9 | 1.391 (5) | C44—H44 | 0.9300 |
C9—C10 | 1.384 (5) | C45—C50 | 1.407 (5) |
C9—H9 | 0.9300 | C45—C46 | 1.424 (4) |
C10—C11 | 1.385 (4) | C46—C47 | 1.361 (5) |
C10—H10 | 0.9300 | C46—H46 | 0.9300 |
C11—C12 | 1.369 (5) | C47—C48 | 1.394 (5) |
C11—H11 | 0.9300 | C47—H47 | 0.9300 |
C12—C13 | 1.392 (5) | C48—C49 | 1.363 (4) |
C12—H12 | 0.9300 | C48—H48 | 0.9300 |
C14—C15 | 1.420 (5) | C49—C50 | 1.408 (5) |
C14—H14 | 0.9300 | C49—H49 | 0.9300 |
C15—C20 | 1.417 (5) | O3—N25 | 1.256 (4) |
C15—C16 | 1.428 (4) | O5—N25 | 1.231 (4) |
C16—C17 | 1.350 (5) | O4—N25 | 1.214 (4) |
C16—H16 | 0.9300 | ||
O1—Co1—N2 | 178.95 (12) | C18—C17—H17 | 120.2 |
O1—Co1—N1 | 95.39 (11) | C19—C18—C17 | 120.9 (4) |
N2—Co1—N1 | 85.08 (13) | C19—C18—H18 | 119.5 |
O1—Co1—O2 | 83.70 (11) | C17—C18—H18 | 119.5 |
N2—Co1—O2 | 95.82 (12) | C18—C19—C20 | 121.4 (4) |
N1—Co1—O2 | 178.78 (12) | C18—C19—H19 | 119.3 |
O1—Co1—N3 | 90.33 (12) | C20—C19—H19 | 119.3 |
N2—Co1—N3 | 88.74 (12) | O2—C20—C19 | 118.3 (4) |
N1—Co1—N3 | 89.07 (12) | O2—C20—C15 | 123.7 (4) |
O2—Co1—N3 | 90.13 (12) | C19—C20—C15 | 117.9 (3) |
O1—Co1—N4 | 89.75 (12) | N3—C21—C22 | 124.1 (3) |
N2—Co1—N4 | 91.18 (12) | N3—C21—H21 | 117.9 |
N1—Co1—N4 | 90.52 (12) | C22—C21—H21 | 117.9 |
O2—Co1—N4 | 90.28 (12) | C21—C22—C23 | 120.8 (4) |
N3—Co1—N4 | 179.59 (13) | C21—C22—H22 | 119.6 |
C50—O1—Co1 | 125.2 (2) | C23—C22—H22 | 119.6 |
C20—O2—Co1 | 126.2 (3) | N5—C23—C22 | 122.9 (4) |
C44—N1—C8 | 122.3 (3) | N5—C23—C24 | 121.8 (4) |
C44—N1—Co1 | 125.3 (3) | C22—C23—C24 | 115.2 (4) |
C8—N1—Co1 | 112.4 (2) | C25—C24—C23 | 120.3 (3) |
C14—N2—C13 | 122.5 (3) | C25—C24—H24 | 119.9 |
C14—N2—Co1 | 124.4 (3) | C23—C24—H24 | 119.9 |
C13—N2—Co1 | 113.1 (2) | N3—C25—C24 | 124.6 (4) |
C25—N3—C21 | 115.1 (3) | N3—C25—H25 | 117.7 |
C25—N3—Co1 | 121.3 (3) | C24—C25—H25 | 117.7 |
C21—N3—Co1 | 123.5 (2) | N4—C26—C27 | 125.2 (4) |
C26—N4—C30 | 115.1 (3) | N4—C26—H26 | 117.4 |
C26—N4—Co1 | 122.9 (3) | C27—C26—H26 | 117.4 |
C30—N4—Co1 | 122.0 (3) | C26—C27—C28 | 118.9 (4) |
C23—N5—H52A | 123 (2) | C26—C27—H27 | 120.5 |
C23—N5—H51A | 124 (3) | C28—C27—H27 | 120.5 |
H52A—N5—H51A | 110 (3) | N6—C28—C29 | 123.4 (4) |
C28—N6—H50A | 121 (3) | N6—C28—C27 | 119.9 (5) |
C28—N6—H49A | 120 (3) | C29—C28—C27 | 116.6 (4) |
H50A—N6—H49A | 119 (4) | C30—C29—C28 | 120.9 (4) |
C13—C8—C9 | 120.2 (4) | C30—C29—H29 | 119.6 |
C13—C8—N1 | 114.5 (3) | C28—C29—H29 | 119.6 |
C9—C8—N1 | 125.3 (3) | N4—C30—C29 | 123.3 (4) |
C10—C9—C8 | 119.4 (3) | N4—C30—H30 | 118.4 |
C10—C9—H9 | 120.3 | C29—C30—H30 | 118.4 |
C8—C9—H9 | 120.3 | N1—C44—C45 | 124.5 (4) |
C9—C10—C11 | 120.7 (4) | N1—C44—H44 | 117.7 |
C9—C10—H10 | 119.6 | C45—C44—H44 | 117.7 |
C11—C10—H10 | 119.6 | C50—C45—C46 | 119.6 (4) |
C12—C11—C10 | 119.5 (4) | C50—C45—C44 | 123.5 (3) |
C12—C11—H11 | 120.2 | C46—C45—C44 | 116.8 (4) |
C10—C11—H11 | 120.2 | C47—C46—C45 | 121.1 (4) |
C11—C12—C13 | 121.0 (3) | C47—C46—H46 | 119.4 |
C11—C12—H12 | 119.5 | C45—C46—H46 | 119.4 |
C13—C12—H12 | 119.5 | C46—C47—C48 | 119.1 (3) |
C8—C13—C12 | 119.1 (4) | C46—C47—H47 | 120.5 |
C8—C13—N2 | 114.0 (3) | C48—C47—H47 | 120.5 |
C12—C13—N2 | 126.8 (3) | C49—C48—C47 | 121.1 (4) |
N2—C14—C15 | 125.4 (4) | C49—C48—H48 | 119.5 |
N2—C14—H14 | 117.3 | C47—C48—H48 | 119.5 |
C15—C14—H14 | 117.3 | C48—C49—C50 | 121.7 (4) |
C20—C15—C14 | 124.0 (3) | C48—C49—H49 | 119.2 |
C20—C15—C16 | 118.9 (4) | C50—C49—H49 | 119.2 |
C14—C15—C16 | 116.9 (4) | O1—C50—C45 | 124.7 (3) |
C17—C16—C15 | 121.2 (4) | O1—C50—C49 | 117.8 (4) |
C17—C16—H16 | 119.4 | C45—C50—C49 | 117.4 (3) |
C15—C16—H16 | 119.4 | O4—N25—O5 | 119.2 (4) |
C16—C17—C18 | 119.6 (4) | O4—N25—O3 | 123.1 (4) |
C16—C17—H17 | 120.2 | O5—N25—O3 | 117.4 (4) |
N1—Co1—O1—C50 | 13.0 (3) | C14—N2—C13—C12 | −5.4 (6) |
O2—Co1—O1—C50 | −167.8 (3) | Co1—N2—C13—C12 | 173.1 (3) |
N3—Co1—O1—C50 | 102.1 (3) | C13—N2—C14—C15 | 171.2 (3) |
N4—Co1—O1—C50 | −77.5 (3) | Co1—N2—C14—C15 | −7.2 (5) |
O1—Co1—O2—C20 | 177.3 (3) | N2—C14—C15—C20 | 1.4 (6) |
N2—Co1—O2—C20 | −3.7 (3) | N2—C14—C15—C16 | −173.8 (3) |
N3—Co1—O2—C20 | −92.4 (3) | C20—C15—C16—C17 | 0.7 (6) |
N4—Co1—O2—C20 | 87.5 (3) | C14—C15—C16—C17 | 176.2 (4) |
O1—Co1—N1—C44 | −10.6 (3) | C15—C16—C17—C18 | 0.2 (7) |
N2—Co1—N1—C44 | 170.3 (3) | C16—C17—C18—C19 | −0.6 (8) |
N3—Co1—N1—C44 | −100.9 (3) | C17—C18—C19—C20 | 0.2 (8) |
N4—Co1—N1—C44 | 79.2 (3) | Co1—O2—C20—C19 | 178.6 (3) |
O1—Co1—N1—C8 | 171.1 (2) | Co1—O2—C20—C15 | −0.4 (5) |
N2—Co1—N1—C8 | −8.0 (2) | C18—C19—C20—O2 | −178.3 (4) |
N3—Co1—N1—C8 | 80.8 (2) | C18—C19—C20—C15 | 0.7 (7) |
N4—Co1—N1—C8 | −99.1 (2) | C14—C15—C20—O2 | 2.8 (6) |
N1—Co1—N2—C14 | −173.5 (3) | C16—C15—C20—O2 | 177.8 (3) |
O2—Co1—N2—C14 | 7.3 (3) | C14—C15—C20—C19 | −176.2 (4) |
N3—Co1—N2—C14 | 97.3 (3) | C16—C15—C20—C19 | −1.1 (6) |
N4—Co1—N2—C14 | −83.1 (3) | C25—N3—C21—C22 | 0.5 (6) |
N1—Co1—N2—C13 | 8.0 (2) | Co1—N3—C21—C22 | −176.1 (3) |
O2—Co1—N2—C13 | −171.2 (2) | N3—C21—C22—C23 | −0.9 (6) |
N3—Co1—N2—C13 | −81.2 (2) | C21—C22—C23—N5 | −175.7 (4) |
N4—Co1—N2—C13 | 98.4 (2) | C21—C22—C23—C24 | 1.3 (6) |
O1—Co1—N3—C25 | 136.1 (3) | N5—C23—C24—C25 | 175.6 (4) |
N2—Co1—N3—C25 | −43.4 (3) | C22—C23—C24—C25 | −1.5 (6) |
N1—Co1—N3—C25 | −128.5 (3) | C21—N3—C25—C24 | −0.7 (6) |
O2—Co1—N3—C25 | 52.4 (3) | Co1—N3—C25—C24 | 176.0 (3) |
O1—Co1—N3—C21 | −47.6 (3) | C23—C24—C25—N3 | 1.2 (6) |
N2—Co1—N3—C21 | 132.9 (3) | C30—N4—C26—C27 | −0.3 (5) |
N1—Co1—N3—C21 | 47.8 (3) | Co1—N4—C26—C27 | −179.4 (3) |
O2—Co1—N3—C21 | −131.3 (3) | N4—C26—C27—C28 | −0.1 (6) |
O1—Co1—N4—C26 | 141.8 (3) | C26—C27—C28—N6 | −178.8 (4) |
N2—Co1—N4—C26 | −38.7 (3) | C26—C27—C28—C29 | 0.9 (5) |
N1—Co1—N4—C26 | 46.4 (3) | N6—C28—C29—C30 | 178.3 (4) |
O2—Co1—N4—C26 | −134.5 (3) | C27—C28—C29—C30 | −1.3 (6) |
O1—Co1—N4—C30 | −37.3 (3) | C26—N4—C30—C29 | −0.2 (5) |
N2—Co1—N4—C30 | 142.2 (3) | Co1—N4—C30—C29 | 178.9 (3) |
N1—Co1—N4—C30 | −132.7 (3) | C28—C29—C30—N4 | 1.1 (6) |
O2—Co1—N4—C30 | 46.4 (3) | C8—N1—C44—C45 | −177.6 (3) |
C44—N1—C8—C13 | −171.8 (3) | Co1—N1—C44—C45 | 4.3 (5) |
Co1—N1—C8—C13 | 6.5 (4) | N1—C44—C45—C50 | 3.8 (6) |
C44—N1—C8—C9 | 9.5 (6) | N1—C44—C45—C46 | 179.9 (3) |
Co1—N1—C8—C9 | −172.2 (3) | C50—C45—C46—C47 | −0.4 (6) |
C13—C8—C9—C10 | 1.7 (6) | C44—C45—C46—C47 | −176.7 (3) |
N1—C8—C9—C10 | −179.7 (3) | C45—C46—C47—C48 | −0.7 (6) |
C8—C9—C10—C11 | −1.7 (6) | C46—C47—C48—C49 | 0.6 (6) |
C9—C10—C11—C12 | 0.9 (6) | C47—C48—C49—C50 | 0.6 (7) |
C10—C11—C12—C13 | −0.1 (6) | Co1—O1—C50—C45 | −9.3 (5) |
C9—C8—C13—C12 | −0.9 (6) | Co1—O1—C50—C49 | 172.0 (3) |
N1—C8—C13—C12 | −179.6 (3) | C46—C45—C50—O1 | −177.1 (3) |
C9—C8—C13—N2 | 178.6 (3) | C44—C45—C50—O1 | −1.1 (6) |
N1—C8—C13—N2 | −0.1 (5) | C46—C45—C50—C49 | 1.6 (5) |
C11—C12—C13—C8 | 0.0 (6) | C44—C45—C50—C49 | 177.5 (3) |
C11—C12—C13—N2 | −179.4 (3) | C48—C49—C50—O1 | 177.1 (4) |
C14—N2—C13—C8 | 175.1 (3) | C48—C49—C50—C45 | −1.7 (6) |
Co1—N2—C13—C8 | −6.4 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
C9—H9···O3 | 0.93 | 2.55 | 3.470 (4) | 169 |
C26—H26···O3i | 0.93 | 2.52 | 3.171 (5) | 128 |
C44—H44···O3 | 0.93 | 2.36 | 3.217 (5) | 152 |
C46—H46···O5 | 0.93 | 2.56 | 3.388 (5) | 148 |
N5—H51A···O4ii | 0.86 (2) | 2.44 (3) | 3.269 (5) | 162 (4) |
N5—H51A···O5ii | 0.86 (2) | 2.36 (3) | 3.078 (5) | 142 (4) |
N5—H52A···O4iii | 0.87 (2) | 2.02 (2) | 2.868 (5) | 166 (3) |
Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) x−1, −y+3/2, z−1/2; (iii) −x+1, y+1/2, −z+3/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C9—H9···O3 | 0.93 | 2.55 | 3.470 (4) | 169 |
C26—H26···O3i | 0.93 | 2.52 | 3.171 (5) | 128 |
C44—H44···O3 | 0.93 | 2.36 | 3.217 (5) | 152 |
C46—H46···O5 | 0.93 | 2.56 | 3.388 (5) | 148 |
N5—H51A···O4ii | 0.86 (2) | 2.44 (3) | 3.269 (5) | 162 (4) |
N5—H51A···O5ii | 0.86 (2) | 2.36 (3) | 3.078 (5) | 142 (4) |
N5—H52A···O4iii | 0.87 (2) | 2.02 (2) | 2.868 (5) | 166 (3) |
Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) x−1, −y+3/2, z−1/2; (iii) −x+1, y+1/2, −z+3/2. |
Acknowledgements
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2010-0012349).
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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.
Cobalt complexes containing Schiff base ligands are interesting synthetic models for cobalamine (B12) enzymes (Polson et al., 1997; Hirota et al., 1998). Among the various Schiff base ligated metal complexes, cobalt complexes with two axial amines show antimicrobial activities (Amirnasr et al., 2001; Khandar et al., 2007; Salehi et al., 2009). Herein we report the synthesis and crystal structure of a new octahedrally coordinated cobalt(III) complex.
The molecular structure of the title compound is shown in Fig. 1. The equatorial positions of the slightly elongated octahedron are occupied by two oxygen and two nitrogen atoms of the Schiff base, and the axial positions by the nitrogen atoms of two 4-aminopyridine molecules. A nitrate anion is present in the lattice to balance the charge of the complex. The pyridine rings are mutually nearly perpendicular to each other, forming a dihedral angle of 82.28 (13)°. The distances between cobalt and the axial nitrogen atoms (1.960 (3) and 1.959 (3)Å) are longer than the equatorial Co—N bonds (1.890 (3) Å), and are comparable with the corresponding values observed in {[Co(III)(salophen)(dipyridine)]ClO4}, where salophen is 2,2'-[o-phenylenebis(nitrilomethylidyne)]diphenolato (Salehi et al., 2009). In the Schiff base ligand, the C15–C20 and C45–C50 phenoxy rings are tilted with respect to the phenylene ring by 12.37 (12) and 12.16 (14)° respectively. In the crystal structure (Fig. 2), the ions are linked into a three-dimensional network by interionic N—H···O and C—H···O hydrogen bonding interactions (Table 1).