metal-organic compounds
Dimethanolbis[4,4,5,5-tetramethyl-2-(5-methylimidazol-4-yl)-2-imidazoline-1-oxyl-3-oxide-κ2O,N]cobalt(II) diperchlorate
aCollege of Chemistry and Environmental Science, Henan Normal University, Xinxiang 453002, People's Republic of China
*Correspondence e-mail: gaozhy201@sohu.com
In the mononuclear title complex, [Co(C11H17N4O2)2(CH3OH)2](ClO4)2, the cobalt(II) atom lies on a symmetry centre and is coordinated by two O,N-bidentate ligands and two trans-arranged O atoms of the methanol molecules in a slightly distorted octahedral geometry. In the cations and anions are linked by N—H⋯O and O—H⋯O hydrogen bonds into layers parallel to the bc plane.
Related literature
For the use of organic radicals as building blocks for the construction of new materials, see: Marvilliers et al. (1999); Yamamoto et al. (2001). For related structures, see: Chang et al. (2009); Zhang et al. (2007); Omata et al. (2001); Fokin et al. (2004); Wang et al. (2005). For the synthesis of the title compound, see: Ullman et al. (1970, 1972).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2002); cell SAINT (Bruker, 2002); 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: publCIF (Westrip, 2009).
Supporting information
10.1107/S1600536809051782/rz2401sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809051782/rz2401Isup2.hkl
The nitronyl nitroxide radical (4,4,5,5-tetramethyl-2-(5-methylimidazol-4-yl)-2-imidazoline-1-oxyl-3-oxide) was synthesized according to the literature procedures (Ullman et al., 1970; Ullman et al., 1972). The complex was synthesized by mixing 5 ml of a methanol solution of nitronyl nitroxide radical (0.4 mmol) and 5 ml of a methanol solution of Co(ClO4)2.6H2O (0.2 mmol). After stirring for two hours at room temperature, the mixture solution was filtered. The clear deep purple filtrate was diffused with diethyl ether vapour at room temperature for two days, to afford deep purple crystals suitable for X-ray analysis.
The H atoms were positioned geometrically and refined using a riding-model approximation, with C—H = 0.93–0.96 Å, N—H = 0.86 Å, O—H = 0.85 Å, and with Uiso(H) = 1.2 Ueq(C, N) or 1.5 Ueq(C, O) for hydroxy and methyl H atoms.
Data collection: SMART (Bruker, 2002); cell
SAINT (Bruker, 2002); data reduction: SAINT (Bruker, 2002); 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: publCIF (Westrip, 2009).[Co(C11H17N4O2)2(CH4O)2](ClO4)2 | Z = 1 |
Mr = 796.49 | F(000) = 415 |
Triclinic, P1 | Dx = 1.546 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.761 (3) Å | Cell parameters from 1879 reflections |
b = 9.030 (3) Å | θ = 2.5–23.8° |
c = 11.819 (4) Å | µ = 0.73 mm−1 |
α = 88.470 (8)° | T = 295 K |
β = 85.260 (11)° | Block, purple |
γ = 66.638 (7)° | 0.21 × 0.10 × 0.06 mm |
V = 855.4 (5) Å3 |
Bruker SMART APEXII CCD area-detector diffractometer | 3880 independent reflections |
Radiation source: fine-focus sealed tube | 2629 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.035 |
phi and ω scans | θmax = 27.5°, θmin = 2.5° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −11→11 |
Tmin = 0.862, Tmax = 0.959 | k = −11→11 |
7639 measured reflections | l = −14→15 |
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)] = 0.058 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.169 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.099P)2] where P = (Fo2 + 2Fc2)/3 |
3880 reflections | (Δ/σ)max < 0.001 |
229 parameters | Δρmax = 1.11 e Å−3 |
0 restraints | Δρmin = −0.70 e Å−3 |
[Co(C11H17N4O2)2(CH4O)2](ClO4)2 | γ = 66.638 (7)° |
Mr = 796.49 | V = 855.4 (5) Å3 |
Triclinic, P1 | Z = 1 |
a = 8.761 (3) Å | Mo Kα radiation |
b = 9.030 (3) Å | µ = 0.73 mm−1 |
c = 11.819 (4) Å | T = 295 K |
α = 88.470 (8)° | 0.21 × 0.10 × 0.06 mm |
β = 85.260 (11)° |
Bruker SMART APEXII CCD area-detector diffractometer | 3880 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2629 reflections with I > 2σ(I) |
Tmin = 0.862, Tmax = 0.959 | Rint = 0.035 |
7639 measured reflections |
R[F2 > 2σ(F2)] = 0.058 | 0 restraints |
wR(F2) = 0.169 | H-atom parameters constrained |
S = 1.02 | Δρmax = 1.11 e Å−3 |
3880 reflections | Δρmin = −0.70 e Å−3 |
229 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 | ||
Co1 | 0.5000 | 0.5000 | 0.5000 | 0.0314 (2) | |
O1 | 0.7069 (3) | 0.5395 (3) | 0.44273 (19) | 0.0368 (6) | |
O2 | 0.6974 (3) | 0.6104 (4) | 0.0527 (2) | 0.0508 (7) | |
O3 | 0.1971 (5) | 0.1192 (5) | 0.3303 (3) | 0.0772 (10) | |
O4 | 0.3181 (5) | 0.0497 (4) | 0.1465 (3) | 0.0735 (10) | |
O5 | 0.0366 (5) | 0.1057 (6) | 0.1857 (4) | 0.1136 (16) | |
O6 | 0.2364 (6) | −0.1310 (4) | 0.2532 (3) | 0.0897 (13) | |
O8 | 0.3412 (3) | 0.7434 (3) | 0.4682 (2) | 0.0479 (7) | |
H8D | 0.3254 | 0.7810 | 0.4015 | 0.072* | |
N1 | 0.4844 (3) | 0.4351 (3) | 0.3332 (2) | 0.0343 (6) | |
N2 | 0.4676 (4) | 0.2834 (4) | 0.1975 (3) | 0.0405 (7) | |
H2 | 0.4357 | 0.2195 | 0.1628 | 0.049* | |
N3 | 0.7304 (3) | 0.5838 (3) | 0.3387 (2) | 0.0303 (6) | |
N4 | 0.7347 (3) | 0.6110 (4) | 0.1542 (2) | 0.0373 (7) | |
C1 | 0.5901 (4) | 0.4399 (4) | 0.2393 (3) | 0.0314 (7) | |
C2 | 0.5821 (4) | 0.3431 (4) | 0.1536 (3) | 0.0347 (7) | |
C3 | 0.4138 (4) | 0.3410 (4) | 0.3035 (3) | 0.0396 (8) | |
H3 | 0.3359 | 0.3168 | 0.3498 | 0.048* | |
C4 | 0.6842 (4) | 0.5387 (4) | 0.2443 (3) | 0.0313 (7) | |
C5 | 0.7972 (4) | 0.7126 (4) | 0.3165 (3) | 0.0357 (8) | |
C6 | 0.8510 (5) | 0.6844 (5) | 0.1892 (3) | 0.0425 (9) | |
C7 | 0.6485 (6) | 0.8712 (5) | 0.3436 (5) | 0.0623 (12) | |
H7A | 0.5604 | 0.8808 | 0.2970 | 0.094* | |
H7B | 0.6817 | 0.9597 | 0.3287 | 0.094* | |
H7C | 0.6098 | 0.8731 | 0.4222 | 0.094* | |
C8 | 0.9369 (5) | 0.6878 (5) | 0.3931 (3) | 0.0502 (10) | |
H8A | 0.8904 | 0.7159 | 0.4698 | 0.075* | |
H8B | 0.9945 | 0.7551 | 0.3680 | 0.075* | |
H8C | 1.0136 | 0.5768 | 0.3898 | 0.075* | |
C9 | 0.8249 (7) | 0.8374 (6) | 0.1205 (4) | 0.0746 (15) | |
H9A | 0.8636 | 0.8089 | 0.0426 | 0.112* | |
H9B | 0.8863 | 0.8929 | 0.1506 | 0.112* | |
H9C | 0.7084 | 0.9065 | 0.1253 | 0.112* | |
C10 | 1.0289 (5) | 0.5579 (7) | 0.1667 (4) | 0.0648 (13) | |
H10A | 1.0382 | 0.4590 | 0.2035 | 0.097* | |
H10B | 1.1059 | 0.5960 | 0.1960 | 0.097* | |
H10C | 1.0544 | 0.5393 | 0.0864 | 0.097* | |
C11 | 0.6750 (5) | 0.2887 (5) | 0.0407 (3) | 0.0468 (9) | |
H11A | 0.6625 | 0.1935 | 0.0170 | 0.070* | |
H11B | 0.7911 | 0.2650 | 0.0462 | 0.070* | |
H11C | 0.6313 | 0.3726 | −0.0139 | 0.070* | |
C12 | 0.2019 (5) | 0.8318 (5) | 0.5434 (4) | 0.0537 (10) | |
H12A | 0.1220 | 0.7833 | 0.5454 | 0.081* | |
H12B | 0.1516 | 0.9410 | 0.5176 | 0.081* | |
H12C | 0.2375 | 0.8310 | 0.6181 | 0.081* | |
Cl1 | 0.19354 (13) | 0.03724 (13) | 0.22937 (9) | 0.0534 (3) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Co1 | 0.0307 (3) | 0.0365 (4) | 0.0318 (4) | −0.0185 (3) | −0.0037 (2) | 0.0074 (3) |
O1 | 0.0374 (12) | 0.0511 (15) | 0.0307 (12) | −0.0268 (11) | −0.0057 (10) | 0.0070 (11) |
O2 | 0.0599 (17) | 0.0717 (19) | 0.0359 (14) | −0.0412 (15) | −0.0107 (12) | 0.0100 (13) |
O3 | 0.099 (3) | 0.089 (3) | 0.061 (2) | −0.056 (2) | 0.0030 (19) | −0.0138 (19) |
O4 | 0.088 (2) | 0.094 (3) | 0.063 (2) | −0.064 (2) | 0.0018 (18) | 0.0024 (18) |
O5 | 0.071 (2) | 0.141 (4) | 0.137 (4) | −0.044 (3) | −0.049 (3) | 0.023 (3) |
O6 | 0.156 (4) | 0.072 (2) | 0.071 (2) | −0.073 (3) | −0.032 (2) | 0.0274 (18) |
O8 | 0.0429 (14) | 0.0436 (14) | 0.0524 (16) | −0.0128 (12) | −0.0051 (12) | 0.0156 (12) |
N1 | 0.0322 (14) | 0.0399 (16) | 0.0360 (16) | −0.0196 (13) | −0.0053 (12) | 0.0038 (12) |
N2 | 0.0428 (16) | 0.0409 (16) | 0.0486 (18) | −0.0268 (14) | −0.0100 (14) | 0.0006 (14) |
N3 | 0.0323 (13) | 0.0363 (14) | 0.0296 (14) | −0.0213 (12) | −0.0038 (11) | 0.0062 (11) |
N4 | 0.0393 (16) | 0.0487 (17) | 0.0331 (15) | −0.0267 (14) | −0.0072 (12) | 0.0069 (13) |
C1 | 0.0313 (16) | 0.0322 (17) | 0.0339 (17) | −0.0157 (14) | −0.0055 (13) | 0.0052 (13) |
C2 | 0.0319 (16) | 0.0374 (18) | 0.0395 (19) | −0.0177 (15) | −0.0094 (14) | 0.0042 (15) |
C3 | 0.0339 (17) | 0.044 (2) | 0.048 (2) | −0.0229 (16) | −0.0082 (15) | 0.0094 (17) |
C4 | 0.0309 (16) | 0.0363 (17) | 0.0315 (17) | −0.0185 (14) | −0.0022 (13) | 0.0035 (14) |
C5 | 0.0372 (18) | 0.0408 (19) | 0.0399 (19) | −0.0267 (16) | −0.0063 (14) | 0.0053 (15) |
C6 | 0.048 (2) | 0.057 (2) | 0.039 (2) | −0.0388 (19) | −0.0089 (16) | 0.0105 (17) |
C7 | 0.061 (3) | 0.044 (2) | 0.088 (3) | −0.027 (2) | −0.003 (2) | −0.005 (2) |
C8 | 0.053 (2) | 0.067 (3) | 0.050 (2) | −0.043 (2) | −0.0154 (18) | 0.008 (2) |
C9 | 0.108 (4) | 0.085 (3) | 0.069 (3) | −0.076 (3) | −0.032 (3) | 0.040 (3) |
C10 | 0.049 (2) | 0.095 (4) | 0.058 (3) | −0.039 (3) | 0.010 (2) | −0.017 (3) |
C11 | 0.049 (2) | 0.052 (2) | 0.042 (2) | −0.0218 (19) | −0.0002 (17) | −0.0075 (17) |
C12 | 0.050 (2) | 0.043 (2) | 0.062 (3) | −0.0106 (19) | −0.012 (2) | −0.0047 (19) |
Cl1 | 0.0628 (6) | 0.0628 (6) | 0.0512 (6) | −0.0409 (5) | −0.0164 (5) | 0.0139 (5) |
Co1—O1i | 2.042 (2) | C2—C11 | 1.491 (5) |
Co1—O1 | 2.042 (2) | C3—H3 | 0.9300 |
Co1—N1i | 2.102 (3) | C5—C8 | 1.524 (5) |
Co1—N1 | 2.102 (3) | C5—C7 | 1.526 (6) |
Co1—O8i | 2.127 (3) | C5—C6 | 1.537 (5) |
Co1—O8 | 2.127 (3) | C6—C9 | 1.530 (5) |
O1—N3 | 1.308 (3) | C6—C10 | 1.531 (6) |
O2—N4 | 1.271 (4) | C7—H7A | 0.9600 |
O3—Cl1 | 1.430 (3) | C7—H7B | 0.9600 |
O4—Cl1 | 1.441 (3) | C7—H7C | 0.9600 |
O5—Cl1 | 1.402 (4) | C8—H8A | 0.9600 |
O6—Cl1 | 1.439 (3) | C8—H8B | 0.9600 |
O8—C12 | 1.415 (5) | C8—H8C | 0.9600 |
O8—H8D | 0.8501 | C9—H9A | 0.9600 |
N1—C3 | 1.302 (4) | C9—H9B | 0.9600 |
N1—C1 | 1.396 (4) | C9—H9C | 0.9600 |
N2—C3 | 1.343 (5) | C10—H10A | 0.9600 |
N2—C2 | 1.376 (4) | C10—H10B | 0.9600 |
N2—H2 | 0.8600 | C10—H10C | 0.9600 |
N3—C4 | 1.343 (4) | C11—H11A | 0.9600 |
N3—C5 | 1.504 (4) | C11—H11B | 0.9600 |
N4—C4 | 1.368 (4) | C11—H11C | 0.9600 |
N4—C6 | 1.506 (4) | C12—H12A | 0.9600 |
C1—C2 | 1.380 (5) | C12—H12B | 0.9600 |
C1—C4 | 1.440 (4) | C12—H12C | 0.9600 |
O1i—Co1—O1 | 180.000 (1) | N4—C6—C9 | 109.6 (3) |
O1i—Co1—N1i | 88.12 (10) | N4—C6—C10 | 107.2 (3) |
O1—Co1—N1i | 91.88 (10) | C9—C6—C10 | 111.2 (4) |
O1i—Co1—N1 | 91.88 (10) | N4—C6—C5 | 100.7 (3) |
O1—Co1—N1 | 88.12 (10) | C9—C6—C5 | 114.9 (4) |
N1i—Co1—N1 | 180.0 | C10—C6—C5 | 112.4 (3) |
O1i—Co1—O8i | 91.60 (10) | C5—C7—H7A | 109.5 |
O1—Co1—O8i | 88.40 (10) | C5—C7—H7B | 109.5 |
N1i—Co1—O8i | 90.41 (11) | H7A—C7—H7B | 109.5 |
N1—Co1—O8i | 89.59 (11) | C5—C7—H7C | 109.5 |
O1i—Co1—O8 | 88.40 (10) | H7A—C7—H7C | 109.5 |
O1—Co1—O8 | 91.60 (10) | H7B—C7—H7C | 109.5 |
N1i—Co1—O8 | 89.59 (11) | C5—C8—H8A | 109.5 |
N1—Co1—O8 | 90.41 (11) | C5—C8—H8B | 109.5 |
O8i—Co1—O8 | 180.00 (14) | H8A—C8—H8B | 109.5 |
N3—O1—Co1 | 122.87 (18) | C5—C8—H8C | 109.5 |
C12—O8—Co1 | 122.0 (2) | H8A—C8—H8C | 109.5 |
C12—O8—H8D | 109.8 | H8B—C8—H8C | 109.5 |
Co1—O8—H8D | 122.5 | C6—C9—H9A | 109.5 |
C3—N1—C1 | 105.6 (3) | C6—C9—H9B | 109.5 |
C3—N1—Co1 | 126.3 (2) | H9A—C9—H9B | 109.5 |
C1—N1—Co1 | 125.3 (2) | C6—C9—H9C | 109.5 |
C3—N2—C2 | 109.0 (3) | H9A—C9—H9C | 109.5 |
C3—N2—H2 | 125.5 | H9B—C9—H9C | 109.5 |
C2—N2—H2 | 125.5 | C6—C10—H10A | 109.5 |
O1—N3—C4 | 126.8 (3) | C6—C10—H10B | 109.5 |
O1—N3—C5 | 120.2 (2) | H10A—C10—H10B | 109.5 |
C4—N3—C5 | 112.6 (3) | C6—C10—H10C | 109.5 |
O2—N4—C4 | 125.5 (3) | H10A—C10—H10C | 109.5 |
O2—N4—C6 | 123.4 (3) | H10B—C10—H10C | 109.5 |
C4—N4—C6 | 111.0 (3) | C2—C11—H11A | 109.5 |
C2—C1—N1 | 109.8 (3) | C2—C11—H11B | 109.5 |
C2—C1—C4 | 131.0 (3) | H11A—C11—H11B | 109.5 |
N1—C1—C4 | 119.2 (3) | C2—C11—H11C | 109.5 |
N2—C2—C1 | 104.0 (3) | H11A—C11—H11C | 109.5 |
N2—C2—C11 | 121.3 (3) | H11B—C11—H11C | 109.5 |
C1—C2—C11 | 134.4 (3) | O8—C12—H12A | 109.5 |
N1—C3—N2 | 111.6 (3) | O8—C12—H12B | 109.5 |
N1—C3—H3 | 124.2 | H12A—C12—H12B | 109.5 |
N2—C3—H3 | 124.2 | O8—C12—H12C | 109.5 |
N3—C4—N4 | 107.6 (3) | H12A—C12—H12C | 109.5 |
N3—C4—C1 | 126.3 (3) | H12B—C12—H12C | 109.5 |
N4—C4—C1 | 126.1 (3) | O5—Cl1—O3 | 111.2 (3) |
N3—C5—C8 | 109.8 (3) | O5—Cl1—O6 | 110.4 (3) |
N3—C5—C7 | 105.0 (3) | O3—Cl1—O6 | 109.6 (2) |
C8—C5—C7 | 111.4 (3) | O5—Cl1—O4 | 109.4 (3) |
N3—C5—C6 | 100.1 (3) | O3—Cl1—O4 | 108.1 (2) |
C8—C5—C6 | 115.5 (3) | O6—Cl1—O4 | 108.0 (2) |
C7—C5—C6 | 113.8 (3) | ||
N1i—Co1—O1—N3 | −151.2 (2) | C5—N3—C4—N4 | 8.1 (4) |
N1—Co1—O1—N3 | 28.8 (2) | O1—N3—C4—C1 | 4.0 (5) |
O8i—Co1—O1—N3 | 118.5 (2) | C5—N3—C4—C1 | −168.7 (3) |
O8—Co1—O1—N3 | −61.5 (2) | O2—N4—C4—N3 | −172.0 (3) |
O1i—Co1—O8—C12 | 39.5 (3) | C6—N4—C4—N3 | 11.4 (4) |
O1—Co1—O8—C12 | −140.5 (3) | O2—N4—C4—C1 | 4.7 (6) |
N1i—Co1—O8—C12 | −48.7 (3) | C6—N4—C4—C1 | −171.8 (3) |
N1—Co1—O8—C12 | 131.3 (3) | C2—C1—C4—N3 | −155.3 (3) |
O1i—Co1—N1—C3 | −25.0 (3) | N1—C1—C4—N3 | 25.4 (5) |
O1—Co1—N1—C3 | 155.0 (3) | C2—C1—C4—N4 | 28.5 (6) |
O8i—Co1—N1—C3 | 66.6 (3) | N1—C1—C4—N4 | −150.8 (3) |
O8—Co1—N1—C3 | −113.4 (3) | O1—N3—C5—C8 | 41.8 (4) |
O1i—Co1—N1—C1 | 177.2 (3) | C4—N3—C5—C8 | −145.0 (3) |
O1—Co1—N1—C1 | −2.8 (3) | O1—N3—C5—C7 | −78.0 (4) |
O8i—Co1—N1—C1 | −91.2 (3) | C4—N3—C5—C7 | 95.2 (4) |
O8—Co1—N1—C1 | 88.8 (3) | O1—N3—C5—C6 | 163.8 (3) |
Co1—O1—N3—C4 | −34.9 (4) | C4—N3—C5—C6 | −23.0 (3) |
Co1—O1—N3—C5 | 137.3 (2) | O2—N4—C6—C9 | 36.9 (5) |
C3—N1—C1—C2 | −1.0 (4) | C4—N4—C6—C9 | −146.5 (4) |
Co1—N1—C1—C2 | 160.5 (2) | O2—N4—C6—C10 | −83.8 (4) |
C3—N1—C1—C4 | 178.4 (3) | C4—N4—C6—C10 | 92.7 (4) |
Co1—N1—C1—C4 | −20.1 (4) | O2—N4—C6—C5 | 158.4 (3) |
C3—N2—C2—C1 | −0.7 (4) | C4—N4—C6—C5 | −25.0 (4) |
C3—N2—C2—C11 | 174.6 (3) | N3—C5—C6—N4 | 26.4 (3) |
N1—C1—C2—N2 | 1.0 (4) | C8—C5—C6—N4 | 144.2 (3) |
C4—C1—C2—N2 | −178.3 (3) | C7—C5—C6—N4 | −85.1 (3) |
N1—C1—C2—C11 | −173.3 (4) | N3—C5—C6—C9 | 144.0 (3) |
C4—C1—C2—C11 | 7.4 (6) | C8—C5—C6—C9 | −98.1 (4) |
C1—N1—C3—N2 | 0.6 (4) | C7—C5—C6—C9 | 32.5 (4) |
Co1—N1—C3—N2 | −160.7 (2) | N3—C5—C6—C10 | −87.4 (3) |
C2—N2—C3—N1 | 0.0 (4) | C8—C5—C6—C10 | 30.4 (4) |
O1—N3—C4—N4 | −179.2 (3) | C7—C5—C6—C10 | 161.1 (3) |
Symmetry code: (i) −x+1, −y+1, −z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···O4 | 0.86 | 2.18 | 2.988 (4) | 156 |
O8—H8D···O6ii | 0.85 | 1.99 | 2.828 (4) | 167 |
Symmetry code: (ii) x, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | [Co(C11H17N4O2)2(CH4O)2](ClO4)2 |
Mr | 796.49 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 295 |
a, b, c (Å) | 8.761 (3), 9.030 (3), 11.819 (4) |
α, β, γ (°) | 88.470 (8), 85.260 (11), 66.638 (7) |
V (Å3) | 855.4 (5) |
Z | 1 |
Radiation type | Mo Kα |
µ (mm−1) | 0.73 |
Crystal size (mm) | 0.21 × 0.10 × 0.06 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.862, 0.959 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7639, 3880, 2629 |
Rint | 0.035 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.058, 0.169, 1.02 |
No. of reflections | 3880 |
No. of parameters | 229 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.11, −0.70 |
Computer programs: SMART (Bruker, 2002), SAINT (Bruker, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008), publCIF (Westrip, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···O4 | 0.86 | 2.18 | 2.988 (4) | 156.4 |
O8—H8D···O6i | 0.85 | 1.99 | 2.828 (4) | 166.9 |
Symmetry code: (i) x, y+1, z. |
Acknowledgements
This work was supported by the Natural Science Foundation and Basic Research Program of Henan province (No. 092300410195)
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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.
Engineering of molecular magnets constitutes a major research goal and has spawned interest in organic radicals as building blocks for construction of new materials (Marvilliers et al., 1999; Yamamoto et al., 2001). In this field, nitronyl nitroxides acting as useful paramagnetic building blocks have been extensively used to assemble molecular magnetic materials, because many of them are good stable spin carriers even when coordinated to metal ions. Various substitutions on radical ligands can lead to large change in not only coordination modes but also electronic behaviours, so a large number of investigations on various properties of metal-radicals complexes have been carried out and aroused intense interest and far-ranging studies (Chang et al., 2009; Zhang et al., 2007; Omata et al., 2001; Fokin et al., 2004; Wang et al., 2005). In this article, we report the synthesis and crystal structure of a novel cobalt(II) complex with the nitronyl nitroxide radical.
The crystal structure of the title compound is shown in Figure. 1. The cobalt(II) ion lies on a symmetry centre and is six-coordinate in a slightly distorted octahedral CoN4O2 environment provided by two O,N-bidentate ligands and two trans-arranged oxygen atoms of methanol molecules. The Co1/O1/N3/C4/C1/N1 six-membered chelatating ring assumes a half-boat conformation, with atoms O1 and C1 displaced by 0.402 (3) and 0.195 (3) Å, respectively, from the mean plane of the other atoms. In the crystal structure, cations and anions are linked by N—H···O and O—H···O hydrogen bonds (Table 1) into layers parallel to the bc plane.