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Acta Cryst. (2009). E65, m1035-m1036    [ doi:10.1107/S1600536809030189 ]

Poly[[([mu]2-benzene-1,4-dicarboxylato-[kappa]4O1,O1':O4,O4')([mu]2-di-4-pyridyldiazene-[kappa]2N1:N1')cobalt(II)] N,N-dimethylformamide disolvate hemihydrate]

C.-X. Chu, Y. Zhang, H. Zhou and A.-H. Yuan

Abstract top

In the title compound, {[Co(C8H4O4)(C10H8N4)]·2C3H7NO·0.5H2O}n, the CoII atom is six-coordinated by four O atoms from two benzene-1,4-dicarboxylate (H2bdc2-) groups and two N atoms from two 4,4'-azopyridine (4,4'-azpy, or di-4-pyridyldiazene) ligands, leading to a distorted octahedral geometry. The structure consists of two-dimensional corrugated sheets with a 44 topology in an ...ABAB... packing pattern stacking along the a axis. The separation of the adjacent corrugated sheets is ca. 8.561 (2)  Å (Co...Co distance) along the a axis. The uncoordinated water molecule is half-occupied. The crystal structure is stabilized by O-H...N and C-H...O hydrogen-bonding interactions.

Comment top

Metal organic framework (MOF) materials have attracted much attention due to their potential functionalities such as gas storage (Rosi et al., 2003; Rowsell et al., 2005), sensing (Halder et al., 2002), and catalysis (Seo et al., 2000). The organic ligands, especially, benzene-1,4-dicarboxylate (H2bdc) and 4,4'-azopyridine (4,4'-azpy), play a great role on constructing the topological architectures of MOFs (Jia, 2007; Halder et al., 2005). Here we employed H2bdc and 4,4'-azpy as mixed ligands to bridge the CoII atom, obtaining the title compound by solvothermal synthesis.

In the structure of the title compound, each CoII atom, lying on an inversion center, is coordinated by four oxygen atoms from two H2BDC groups and two nitrogen atoms from two 4,4'-azpy ligands, exhibiting a slightly distorted octahedral geometry (Fig. 1). The bond lengths of Co—O range from 2.059 (3) to 2.353 (3) Å, while the ones of Co—N are 2.079 (4) Å for Co1—N1 and 2.062 (4) Å for Co1—N4, respectively (Table 1). The CoII centers are linked by H2bdc groups into one-dimensional infinite zigzag chains along the b axis in the bc plane. Then, the chains are further linked by 4,4'- azpy ligands along the c axis, resulting in two-dimensional corrugated sheets with 44 topology. These corrugated sheets without interpenetration are stacking along the a axis in an ABAB packing mode (Fig. 2). The torsion angle of the adjacent sheets is ca. 45 ° in the bc plane, while the separation between adjacent corrugated sheets is ca. 8.56 Å (Co···Co distance) along the a axis.

The crystal structure is stabilized by O—H···N and C—H···O hydrogen bonding interactions (Table 2).

Related literature top

For background to metal-organic framework (MOF) materials, see: Halder et al. (2002); Murray & Cashion (2002); Rosi et al. (2003); Rowsell et al. (2005); Seo et al. (2000). For compounds containing H2bdc or 4,4'-azpy ligands, see: Halder et al. (2005); Jia (2007).

Experimental top

A mixture of CoCl2.6H2O (23.8 mg, 0.1 mmol), H2bdc (16.6 mg, 0.1 mmol), 4,4'-azpy (18.4 mg, 0.1 mmol) and DMF (N, N-dimethylformamide) (10 ml) was stirred for 15 min at room temperature and then transferred into a Teflon-lined stainless-steel vessel. The mixture was heated at 433 K for two days under autogenous pressure. After cooling the resulting solution to room temperature with the rate of 10 °C/h, purple and layer-shaped crystals were obtained. Analysis calculated for Co2N12O13C48H54: C 51.25, H 4.80, N 14.93%; found: C 51.16, H 4.65, N 14.92%.

Refinement top

The C(H) atoms of the H2bdc ligands, 4,4'-azpy ligands, and solvent DMF molecules were all placed in calculated position [C—H = 0.93 Å or 0.96 Å] and refined using a riding model, with Uĩso(H) = 1.2Ueq(C) or Uĩso(H) = 1.5Ueq(C). The O(H) atoms of the water molecules were located in a difference Fourier map and refined as riding [O—H = 0.85 Å], with Uĩso(H) = 1.2Ueq(O).

Computing details top

Data collection: SMART (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).

Figures top
[Figure 1] Fig. 1. ORTEP diagram of the title compound. Displacement ellipsoids are drawn at the 30% probablity level. Hydrogen atoms are omitted for clarity.
[Figure 2] Fig. 2. View of the stacking without interpenetration of sheets along the a axis. Hydrogen atoms, solvent DMF molecules and water molecules are not involved for clarity.
Poly[[(µ2-benzene-1,4-dicarboxylato- κ4O1,O1':O4,O4')(µ2-di-4- pyridyldiazene-κ2N1:N1')cobalt(II)] N,N-dimethylformamide disolvate hemihydrate] top
Crystal data top
[Co(C8H4O4)(C10H8N4)]·2C3H7NO·0.5H2OF(000) = 4672
Mr = 562.45Dx = 1.323 Mg m−3
Orthorhombic, Fdd2Mo Kα radiation, λ = 0.71073 Å
Hall symbol: F 2 -2dCell parameters from 3875 reflections
a = 32.441 (4) Åθ = 2.2–24.4°
b = 34.138 (4) ŵ = 0.66 mm−1
c = 10.1972 (12) ÅT = 291 K
V = 11293 (2) Å3Pale, purple
Z = 160.25 × 0.20 × 0.08 mm
Data collection top
Bruker SMART APEX CCD
diffractometer		5500 independent reflections
Radiation source: sealed tube4262 reflections with I > 2σ(I)
graphiteRint = 0.062
φ and ω scansθmax = 26.0°, θmin = 1.7°
Absorption correction: multi-scan
(SADABS; Bruker, 2004)		h = −40→40
Tmin = 0.84, Tmax = 0.88k = −42→41
21948 measured reflectionsl = −12→12
Refinement top
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.057H-atom parameters constrained
wR(F2) = 0.134 w = 1/[σ2(Fo2) + (0.07P)2 + 1.99P]
where P = (Fo2 + 2Fc2)/3
S = 1.07(Δ/σ)max < 0.001
5500 reflectionsΔρmax = 0.35 e Å−3
335 parametersΔρmin = −0.36 e Å−3
1 restraintAbsolute structure: Flack (1983), 2564 Freidel pairs
Primary atom site location: structure-invariant direct methodsFlack parameter: 0.04 (2)
Crystal data top
[Co(C8H4O4)(C10H8N4)]·2C3H7NO·0.5H2OV = 11293 (2) Å3
Mr = 562.45Z = 16
Orthorhombic, Fdd2Mo Kα radiation
a = 32.441 (4) ŵ = 0.66 mm−1
b = 34.138 (4) ÅT = 291 K
c = 10.1972 (12) Å0.25 × 0.20 × 0.08 mm
Data collection top
Bruker SMART APEX CCD
diffractometer		5500 independent reflections
Absorption correction: multi-scan
(SADABS; Bruker, 2004)		4262 reflections with I > 2σ(I)
Tmin = 0.84, Tmax = 0.88Rint = 0.062
21948 measured reflectionsθmax = 26.0°
Refinement top
R[F2 > 2σ(F2)] = 0.057H-atom parameters constrained
wR(F2) = 0.134Δρmax = 0.35 e Å−3
S = 1.07Δρmin = −0.36 e Å−3
5500 reflectionsAbsolute structure: Flack (1983), 2564 Freidel pairs
335 parametersFlack parameter: 0.04 (2)
1 restraint
Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/UeqOcc. (<1)
C10.52950 (14)0.07179 (14)0.9140 (5)0.0483 (11)
H10.52310.05170.97240.058*
C20.55879 (14)0.06426 (13)0.8190 (5)0.0469 (10)
H20.57190.04010.81530.056*
C30.56831 (13)0.09346 (13)0.7291 (5)0.0440 (10)
C40.54745 (14)0.12918 (13)0.7419 (5)0.0460 (11)
H40.55290.14980.68470.055*
C50.51897 (13)0.13334 (13)0.8397 (6)0.0543 (12)
H50.50500.15710.84520.065*
C60.51064 (14)0.08224 (13)0.3277 (5)0.0471 (10)
H60.49000.06340.32790.057*
C70.53796 (13)0.08165 (13)0.4260 (5)0.0447 (11)
H70.53550.06320.49270.054*
C80.57026 (13)0.10881 (12)0.4282 (4)0.0393 (10)
C90.57199 (12)0.13488 (13)0.3217 (5)0.0447 (10)
H90.59320.15310.31510.054*
C100.54305 (13)0.13299 (13)0.2316 (4)0.0448 (10)
H100.54490.15070.16250.054*
C110.43039 (14)0.16957 (14)1.0169 (4)0.0438 (10)
C120.40496 (7)0.20614 (7)0.9897 (3)0.0409 (10)
C130.41490 (7)0.24214 (8)1.0450 (3)0.0467 (11)
H130.43770.24441.09960.056*
C140.39070 (9)0.27481 (6)1.0187 (3)0.0460 (11)
H140.39730.29891.05570.055*
C150.35657 (8)0.27148 (7)0.9370 (3)0.0463 (11)
C160.34663 (7)0.23548 (8)0.8817 (3)0.0437 (10)
H160.32380.23330.82710.052*
C170.37083 (8)0.20281 (6)0.9081 (3)0.0419 (10)
H170.36420.17870.87110.050*
C180.32954 (13)0.30541 (13)0.9112 (4)0.0416 (10)
C190.34469 (15)0.31385 (14)0.5392 (4)0.0459 (11)
H19A0.36590.29650.57000.069*
H19B0.31890.30680.57900.069*
H19C0.35160.34030.56230.069*
C200.32794 (13)0.34669 (13)0.3270 (5)0.0469 (11)
H20A0.34270.34920.24590.070*
H20B0.33360.36890.38180.070*
H20C0.29890.34540.30940.070*
C210.35209 (14)0.27414 (13)0.3303 (5)0.0465 (10)
H21A0.37770.26320.34870.056*
C220.46065 (14)0.18349 (13)0.4854 (5)0.0464 (11)
H22A0.44940.17450.40370.070*
H22B0.44320.17530.55610.070*
H22C0.48770.17260.49710.070*
C230.44909 (13)0.24827 (14)0.6023 (4)0.0464 (11)
H23A0.47250.25570.65430.070*
H23B0.43130.23170.65310.070*
H23C0.43430.27130.57570.070*
C240.47026 (13)0.24724 (14)0.3600 (4)0.0453 (10)
H24A0.45470.26870.33360.054*
N10.50968 (12)0.10580 (11)0.9280 (4)0.0501 (10)
N20.59730 (11)0.08629 (11)0.6303 (4)0.0464 (9)
N30.59939 (11)0.11042 (11)0.5299 (4)0.0464 (9)
N40.51102 (12)0.10792 (11)0.2297 (4)0.0477 (10)
N50.34115 (11)0.31054 (11)0.3948 (4)0.0462 (9)
N60.46332 (12)0.22667 (11)0.4842 (4)0.0485 (9)
O10.41954 (9)0.13759 (9)0.9692 (3)0.0463 (7)
O20.46054 (10)0.17289 (9)1.0912 (3)0.0490 (8)
Co10.467820 (19)0.110280 (18)1.08164 (6)0.04633 (17)
O30.30051 (9)0.30257 (8)0.8275 (3)0.0450 (7)
O40.33472 (10)0.33757 (9)0.9713 (3)0.0470 (7)
O50.32930 (9)0.25672 (9)0.2523 (3)0.0490 (8)
O60.49957 (10)0.23314 (9)0.2912 (3)0.0495 (8)
O70.49198 (17)0.02737 (16)0.6249 (6)0.0438 (15)0.50
H7A0.47790.04400.66770.053*0.50
H7C0.51470.02330.66430.053*0.50
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
C10.055 (3)0.041 (2)0.049 (3)0.003 (2)0.011 (2)0.018 (2)
C20.052 (2)0.045 (2)0.044 (2)0.0129 (19)0.004 (2)0.011 (2)
C30.038 (2)0.045 (2)0.049 (3)0.0034 (19)−0.0015 (19)0.013 (2)
C40.046 (2)0.034 (2)0.058 (3)−0.0052 (19)0.008 (2)0.011 (2)
C50.039 (2)0.041 (2)0.083 (3)0.0057 (19)0.018 (3)0.023 (3)
C60.046 (2)0.051 (3)0.044 (2)−0.0026 (19)−0.014 (2)0.013 (2)
C70.041 (2)0.044 (3)0.049 (3)−0.0074 (19)−0.0096 (19)0.0190 (19)
C80.034 (2)0.037 (2)0.047 (2)0.0005 (17)0.0021 (17)0.0160 (18)
C90.046 (2)0.049 (2)0.039 (2)−0.0168 (19)0.004 (2)0.016 (2)
C100.045 (2)0.046 (2)0.043 (2)−0.002 (2)−0.001 (2)0.014 (2)
C110.043 (2)0.049 (3)0.039 (2)0.0040 (19)0.007 (2)0.0094 (19)
C120.036 (2)0.041 (2)0.046 (2)−0.0004 (17)0.0028 (19)−0.0029 (19)
C130.048 (2)0.041 (2)0.051 (3)0.0011 (19)−0.019 (2)−0.0003 (19)
C140.042 (2)0.052 (3)0.044 (2)0.011 (2)−0.0092 (19)−0.011 (2)
C150.053 (3)0.048 (3)0.038 (2)0.006 (2)−0.015 (2)0.008 (2)
C160.039 (2)0.053 (3)0.039 (2)0.0139 (19)−0.0165 (18)−0.002 (2)
C170.033 (2)0.045 (2)0.048 (3)0.0103 (18)0.0037 (18)0.0088 (19)
C180.042 (2)0.035 (2)0.048 (3)−0.0035 (17)−0.0090 (19)−0.0017 (19)
C190.050 (2)0.047 (3)0.040 (2)0.011 (2)−0.0153 (19)−0.0161 (19)
C200.048 (2)0.045 (2)0.048 (2)0.0133 (18)0.025 (2)0.024 (2)
C210.050 (2)0.048 (2)0.041 (2)−0.0162 (19)0.022 (2)−0.011 (2)
C220.048 (2)0.045 (2)0.046 (2)−0.016 (2)−0.019 (2)0.018 (2)
C230.041 (2)0.052 (3)0.046 (3)−0.0109 (19)0.0137 (19)0.016 (2)
C240.044 (2)0.047 (2)0.045 (2)0.0162 (19)0.0128 (19)−0.0123 (19)
N10.045 (2)0.047 (2)0.058 (3)0.0075 (18)0.0063 (19)0.0187 (19)
N20.042 (2)0.042 (2)0.056 (2)0.0049 (16)0.0049 (17)0.0180 (17)
N30.046 (2)0.049 (2)0.0442 (19)−0.0205 (17)−0.0080 (16)0.0169 (17)
N40.055 (2)0.049 (2)0.039 (2)−0.0110 (18)0.0065 (18)0.0142 (17)
N50.050 (2)0.044 (2)0.045 (2)−0.0143 (17)0.0165 (17)0.0115 (17)
N60.048 (2)0.047 (2)0.051 (2)−0.0154 (17)0.0111 (17)−0.0098 (18)
O10.0475 (17)0.0440 (18)0.0475 (18)0.0113 (13)0.0030 (14)0.0084 (15)
O20.0545 (19)0.0475 (17)0.0449 (17)0.0085 (14)−0.0040 (16)0.0148 (16)
Co10.0466 (3)0.0478 (3)0.0446 (3)−0.0004 (3)−0.0022 (3)0.0112 (3)
O30.0485 (16)0.0416 (16)0.0449 (16)−0.0065 (13)−0.0155 (15)0.0075 (15)
O40.0540 (18)0.0358 (16)0.0512 (18)−0.0083 (14)0.0009 (15)0.0047 (14)
O50.0458 (17)0.0489 (19)0.0522 (19)0.0146 (13)−0.0144 (14)−0.0177 (15)
O60.0505 (17)0.0525 (18)0.0456 (18)−0.0203 (15)0.0137 (14)−0.0169 (14)
O70.040 (3)0.038 (3)0.053 (4)0.010 (2)0.015 (3)0.014 (3)
Geometric parameters (Å, °) top
C1—N11.335 (6)C18—O41.268 (5)
C1—C21.381 (6)C18—O31.275 (5)
C1—H10.9300C19—N51.482 (6)
C2—C31.389 (6)C19—H19A0.9600
C2—H20.9300C19—H19B0.9600
C3—N21.399 (6)C19—H19C0.9600
C3—C41.401 (6)C20—N51.478 (5)
C4—C51.367 (7)C20—H20A0.9600
C4—H40.9300C20—H20B0.9600
C5—N11.336 (6)C20—H20C0.9600
C5—H50.9300C21—O51.238 (5)
C6—N41.329 (6)C21—N51.449 (6)
C6—C71.338 (6)C21—H21A0.9300
C6—H60.9300C22—N61.477 (6)
C7—C81.399 (6)C22—H22A0.9600
C7—H70.9300C22—H22B0.9600
C8—N31.404 (6)C22—H22C0.9600
C8—C91.405 (6)C23—N61.486 (6)
C9—C101.315 (6)C23—H23A0.9600
C9—H90.9300C23—H23B0.9600
C10—N41.346 (6)C23—H23C0.9600
C10—H100.9300C24—O61.276 (5)
C11—O21.242 (6)C24—N61.465 (6)
C11—O11.246 (6)C24—H24A0.9300
C11—C121.522 (5)N1—Co12.079 (4)
C12—C131.3900N2—N31.316 (5)
C12—C171.3900N4—Co1i2.062 (4)
C13—C141.3900O1—Co12.153 (3)
C13—H130.9300O2—Co12.153 (3)
C14—C151.3900Co1—O3ii2.059 (3)
C14—H140.9300Co1—N4iii2.062 (4)
C15—C161.3900Co1—O4ii2.353 (3)
C15—C181.477 (5)O3—Co1iv2.059 (3)
C16—C171.3900O4—Co1iv2.353 (3)
C16—H160.9300O7—H7A0.8499
C17—H170.9300O7—H7C0.8501
N1—C1—C2124.6 (4)H19A—C19—H19C109.5
N1—C1—H1117.7H19B—C19—H19C109.5
C2—C1—H1117.7N5—C20—H20A109.5
C1—C2—C3118.8 (4)N5—C20—H20B109.5
C1—C2—H2120.6H20A—C20—H20B109.5
C3—C2—H2120.6N5—C20—H20C109.5
C2—C3—N2119.9 (4)H20A—C20—H20C109.5
C2—C3—C4117.1 (4)H20B—C20—H20C109.5
N2—C3—C4123.0 (4)O5—C21—N5123.8 (4)
C5—C4—C3119.0 (4)O5—C21—H21A118.1
C5—C4—H4120.5N5—C21—H21A118.1
C3—C4—H4120.5N6—C22—H22A109.5
N1—C5—C4124.8 (4)N6—C22—H22B109.5
N1—C5—H5117.6H22A—C22—H22B109.5
C4—C5—H5117.6N6—C22—H22C109.5
N4—C6—C7124.5 (4)H22A—C22—H22C109.5
N4—C6—H6117.7H22B—C22—H22C109.5
C7—C6—H6117.7N6—C23—H23A109.5
C6—C7—C8119.9 (4)N6—C23—H23B109.5
C6—C7—H7120.1H23A—C23—H23B109.5
C8—C7—H7120.1N6—C23—H23C109.5
C7—C8—N3122.8 (4)H23A—C23—H23C109.5
C7—C8—C9115.9 (4)H23B—C23—H23C109.5
N3—C8—C9121.3 (4)O6—C24—N6114.1 (4)
C10—C9—C8118.7 (4)O6—C24—H24A122.9
C10—C9—H9120.6N6—C24—H24A122.9
C8—C9—H9120.6C1—N1—C5115.6 (4)
C9—C10—N4126.3 (4)C1—N1—Co1117.3 (3)
C9—C10—H10116.9C5—N1—Co1127.1 (3)
N4—C10—H10116.9N3—N2—C3119.0 (4)
O2—C11—O1122.7 (4)N2—N3—C8121.1 (3)
O2—C11—C12117.6 (4)C6—N4—C10114.6 (4)
O1—C11—C12119.6 (4)C6—N4—Co1i124.7 (3)
O2—C11—Co161.4 (2)C10—N4—Co1i120.7 (3)
O1—C11—Co161.4 (2)C21—N5—C20125.1 (4)
C12—C11—Co1174.3 (3)C21—N5—C19119.8 (4)
C13—C12—C17120.0C20—N5—C19115.0 (4)
C13—C12—C11121.7 (2)C24—N6—C22119.6 (4)
C17—C12—C11118.3 (2)C24—N6—C23120.7 (3)
C12—C13—C14120.0C22—N6—C23118.1 (4)
C12—C13—H13120.0C11—O1—Co188.0 (3)
C14—C13—H13120.0C11—O2—Co188.2 (3)
C15—C14—C13120.0O3ii—Co1—N4iii100.02 (14)
C15—C14—H14120.0O3ii—Co1—N195.89 (14)
C13—C14—H14120.0N4iii—Co1—N196.03 (14)
C16—C15—C14120.0O3ii—Co1—O2156.86 (12)
C16—C15—C18118.9 (2)N4iii—Co1—O294.61 (14)
C14—C15—C18121.0 (2)N1—Co1—O2100.31 (14)
C17—C16—C15120.0O3ii—Co1—O1101.14 (13)
C17—C16—H16120.0N4iii—Co1—O1154.34 (15)
C15—C16—H16120.0N1—Co1—O196.06 (14)
C16—C17—C12120.0O2—Co1—O160.96 (12)
C16—C17—H17120.0O3ii—Co1—O4ii59.18 (11)
C12—C17—H17120.0N4iii—Co1—O4ii92.07 (13)
O4—C18—O3119.2 (4)N1—Co1—O4ii154.85 (14)
O4—C18—C15120.9 (4)O2—Co1—O4ii102.73 (12)
O3—C18—C15119.9 (3)O1—Co1—O4ii86.45 (11)
N5—C19—H19A109.5C18—O3—Co1iv97.3 (2)
N5—C19—H19B109.5C18—O4—Co1iv84.1 (3)
H19A—C19—H19B109.5H7A—O7—H7C109.5
N5—C19—H19C109.5
Symmetry codes: (i) x, y, z−1; (ii) −x+3/4, y−1/4, z+1/4; (iii) x, y, z+1; (iv) −x+3/4, y+1/4, z−1/4.
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
O7—H7A···N5ii0.852.322.932 (7)129
C7—H7···O70.932.303.126 (7)147
C16—H16···O30.932.482.791 (4)100
C17—H17···O10.932.492.800 (4)100
C19—H19C···O1iv0.962.373.150 (6)138
C23—H23A···O6v0.961.712.624 (5)158
Symmetry codes: (ii) −x+3/4, y−1/4, z+1/4; (iv) −x+3/4, y+1/4, z−1/4; (v) −x+1, −y+1/2, z+1/2.
Table 1
Selected geometric parameters (Å, °) top
N1—Co12.079 (4)Co1—N4iii2.062 (4)
N4—Co1i2.062 (4)Co1—O4ii2.353 (3)
O1—Co12.153 (3)O3—Co1iv2.059 (3)
O2—Co12.153 (3)O4—Co1iv2.353 (3)
Co1—O3ii2.059 (3)
N2—N3—C8121.1 (3)
Symmetry codes: (i) x, y, z−1; (ii) −x+3/4, y−1/4, z+1/4; (iii) x, y, z+1; (iv) −x+3/4, y+1/4, z−1/4.
Table 2
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
O7—H7A···N5ii0.852.322.932 (7)129
C7—H7···O70.932.303.126 (7)147
C16—H16···O30.932.482.791 (4)100
C17—H17···O10.932.492.800 (4)100
C19—H19C···O1iv0.962.373.150 (6)138
C23—H23A···O6v0.961.712.624 (5)158
Symmetry codes: (ii) −x+3/4, y−1/4, z+1/4; (iv) −x+3/4, y+1/4, z−1/4; (v) −x+1, −y+1/2, z+1/2.
Acknowledgements top

The work was supported by the University Natural Science Foundation of Jiangsu Province (No. 07KJB150030).

references
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