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Acta Cryst. (2008). E64, m379    [ doi:10.1107/S1600536808001827 ]

catena-Poly[[(dipyrido[3,2-a:2',3'-c]phenazine)cobalt(II)]-[mu]-biphenyl-2,2'-dicarboxylato]

F. Wei, W.-J. Wang, X.-J. Jin, Z.-M. Mei and X.-P. Li

Abstract top

In the title compound, [Co(C14H8O4)(C18H10N4)]n, the CoII atom is six-coordinated by four O atoms from two different biphenyl-2,2'-dicarboxylate ligands and two N atoms from the bidentate dipyrido[3,2-a:2',3'-c]phenazine ligand in a distorted octahedral geometry. The CoII atoms are bridged by the biphenyl-2,2'-dicarboxylate ligands to form a one-dimensional chain structure. [pi]-[pi] interactions between neighbouring chains result in a two-dimensional supramolecular network (centroid-to-centroid separation = 3.381 Å).

Comment top

Metal-organic hybrid compounds have attracted considerable interest and importance in recent years, not only due to their intriguing structural motifs but also their potential applications in areas such as catalysis, medicine and host–guest chemistry (Hao et al., 2004). The chelating ligand 1,10-phenanthroline (phen) and its derivatives have been widely used in the construction of metal-organic coordination polymers (Li et al., 2006). On the other hand, carboxylate ligands have already been proven to be efficient for the generation of a helical coordination polymer (Li et al., 2007), so we reacted dipydo[3,2 - a:2',3'-c]phenazine with cobalt and biphenyl-2,2'-dicarboxylate, resulting in the title molecular complex, [Co(C14H8O4)(C18H10N4)]n, (I)

Compound (I) is a one-dimensional chain structure, which is constructed from one CoII atom, one L ligand and two biphenyl-2,2'-dicarboxylate dianion (Fig. 1). The CoII center is six-coordinated by two N atoms from the bidentate L ligand and four O atoms from two different 2,6'-biphenyl dicarboxylic acid ligands to result in a substantially distorted cis-CoN2O4 octahedron. The mean Co—O and Co—N distances are 2.112 (3) and 2.104 (4) Å, respectively. The C—O bond lengths of the 2,6'-biphenyl dicarboxylic acid groups imply electronic delocalizations of the negative charges.

Neighboring CoII atoms are bridged by the biphenyl-2,2'-dicarboxylate ligands, forming a one-dimensional chain structure as shown in (Fig. 2). Then, neighbouring chains are connected by π-π interactions, generating a two-dimensional supramolecular structure (Fig. 3). The π-π stacking distances are 3.381Å between L ligands. Similar values are seen in related structures (Noveron et al., 2002).

Related literature top

For related literature, see: Hao et al. (2004); Li et al. (2006); Noveron et al. (2002); Dickeson & Summers (1970); Li et al. (2007); Zhang et al. (2001).

Experimental top

The L ligand was synthesized by the literature method of Dickeson & Summers (1970). A mixture of CoCl2.2H2O (0.3 mmol), L (0.1 mmol) and 2,6'-biphenyl dicarboxylic acid (0.3 mmol) in 30 ml of distilled water was stirred thoroughly for 1 h at ambient temperature. The pH value was adjusted to about 7.5 with NaOH aqueous solution. The suspension was sealed in a Teflon-lined stainless reaction vessel (40 ml) and heated at 443 K for 5 days. The vessel was cooled slowly to room temperature at a rate of 10 K h-1 before opening and yellow crystals of (I) were collected.

Refinement top

All H atoms were placed geometrically (C—H = 0.93 Å) and refined as riding with Uiso(H)= 1.2Ueq(carrier).

Computing details top

Data collection: APEX2 (Bruker, 2006); cell refinement: 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-Plus (Sheldrick, 2008); software used to prepare material for publication: SHELXTL-Plus (Sheldrick, 2008).

Figures top
[Figure 1] Fig. 1. The asymmetric unit of (I), together with additional atoms to complete the coordination of Co1 with displacement ellipsoids drawn at the 30% probability level (arbitrary spheres for the H atoms). Symmetry codes: (i) -x, -y + 1/2, -z + 1/2; (ii) -x, y - 1/2, -z + 1/2.
[Figure 2] Fig. 2. A view of the one-chain structure of (I). H atoms have been omitted for clarity.
[Figure 3] Fig. 3. View of the two-dimensional supramolecular structure of (I) generated by π-π interations. H atoms have been omitted for clarity.
catena-Poly[[(dipyrido[3,2 - a:2',3'-c]phenazine)cobalt(II)]-µ-biphenyl-2,2'- dicarboxylato] top
Crystal data top
[Co(C14H8O4)(C18H10N4)]F000 = 1188.0
Mr = 581.43Dx = 1.553 Mg m−3
Monoclinic, P21/cMo Kα radiation
λ = 0.71073 Å
Hall symbol: -P 2ybcCell parameters from 2096 reflections
a = 9.311 (4) Åθ = 2.3–26.0º
b = 12.521 (5) ŵ = 0.74 mm−1
c = 21.831 (10) ÅT = 293 (2) K
β = 102.31ºBlock, amethyst
V = 2486.5 (19) Å30.44 × 0.11 × 0.07 mm
Z = 4
Data collection top
Bruker APEXII
diffractometer		5022 independent reflections
Radiation source: fine-focus sealed tube1796 reflections with I > 2σ(I)
Monochromator: graphiteRint = 0.085
Detector resolution: 0 pixels mm-1θmax = 26.2º
T = 292(2) Kθmin = 1.9º
not measured scansh = −9→11
Absorption correction: multi-scan
(SADABS; Bruker, 2002)		k = −15→15
Tmin = 0.904, Tmax = 0.951l = −27→18
13141 measured reflections
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)] = 0.048H-atom parameters constrained
wR(F2) = 0.085  w = 1/[σ2(Fo2) + (0.002P)2]
where P = (Fo2 + 2Fc2)/3
S = 0.87(Δ/σ)max = 0.001
5022 reflectionsΔρmax = 0.92 e Å−3
370 parametersΔρmin = −0.30 e Å−3
Primary atom site location: structure-invariant direct methodsExtinction correction: none
Crystal data top
[Co(C14H8O4)(C18H10N4)]V = 2486.5 (19) Å3
Mr = 581.43Z = 4
Monoclinic, P21/cMo Kα
a = 9.311 (4) ŵ = 0.74 mm−1
b = 12.521 (5) ÅT = 293 (2) K
c = 21.831 (10) Å0.44 × 0.11 × 0.07 mm
β = 102.31º
Data collection top
Bruker APEXII
diffractometer		5022 independent reflections
Absorption correction: multi-scan
(SADABS; Bruker, 2002)		1796 reflections with I > 2σ(I)
Tmin = 0.904, Tmax = 0.951Rint = 0.085
13141 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.048370 parameters
wR(F2) = 0.085H-atom parameters constrained
S = 0.87Δρmax = 0.92 e Å−3
5022 reflectionsΔρmin = −0.30 e Å−3
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*/Ueq
Co10.02037 (7)0.27680 (5)0.19183 (3)0.0511 (2)
O10.1414 (3)0.2191 (3)0.27808 (13)0.0644 (10)
O2−0.0977 (3)0.2343 (2)0.26292 (13)0.0526 (9)
N20.0064 (4)0.1293 (3)0.14589 (18)0.0486 (11)
C5−0.3420 (5)0.1185 (4)−0.0118 (2)0.0458 (13)
N1−0.1583 (4)0.3017 (3)0.11521 (17)0.0496 (11)
C4−0.3106 (5)0.2151 (4)0.0256 (2)0.0455 (13)
C12−0.2475 (5)0.0282 (4)0.0016 (2)0.0449 (13)
N4−0.4625 (4)0.1169 (3)−0.05836 (18)0.0521 (12)
C13−0.1245 (5)0.0309 (4)0.0561 (2)0.0454 (13)
N3−0.2692 (4)−0.0605 (3)−0.03208 (19)0.0512 (11)
C18−0.1927 (5)0.2156 (4)0.0769 (2)0.0436 (12)
C17−0.1001 (5)0.1222 (4)0.0925 (2)0.0422 (13)
C190.0254 (5)0.2107 (4)0.2984 (2)0.0457 (13)
C6−0.4883 (5)0.0253 (5)−0.0920 (2)0.0519 (14)
C200.0350 (5)0.1783 (3)0.3653 (2)0.0395 (12)
C31−0.2806 (5)0.0171 (4)0.3290 (2)0.0454 (13)
C26−0.2356 (5)0.1185 (4)0.3516 (2)0.0461 (13)
C11−0.3907 (6)−0.0624 (4)−0.0800 (2)0.0526 (14)
C230.0737 (5)0.1393 (4)0.4925 (2)0.0661 (16)
H23A0.08460.12790.53540.079*
C210.1700 (5)0.1932 (3)0.4056 (2)0.0498 (14)
H21A0.24900.21700.38940.060*
C3−0.3955 (5)0.3080 (4)0.0141 (2)0.0569 (15)
H3B−0.47440.3108−0.02010.068*
C25−0.0827 (5)0.1402 (4)0.3883 (2)0.0454 (13)
C24−0.0610 (5)0.1215 (4)0.4522 (2)0.0587 (15)
H24A−0.13900.09630.46860.070*
C30−0.4302 (6)−0.0057 (4)0.3079 (2)0.0628 (16)
H30A−0.4597−0.07430.29440.075*
C7−0.6179 (5)0.0173 (4)−0.1408 (2)0.0602 (16)
H7A−0.68330.0743−0.14900.072*
C14−0.0337 (5)−0.0574 (4)0.0756 (2)0.0569 (15)
H14A−0.0458−0.11990.05200.068*
C27−0.3441 (6)0.1970 (4)0.3493 (2)0.0624 (15)
H27A−0.31630.26560.36340.075*
C2−0.3632 (5)0.3954 (4)0.0528 (2)0.0692 (17)
H2B−0.42010.45700.04600.083*
C160.0876 (5)0.0434 (5)0.1629 (2)0.0578 (15)
H16A0.15940.04710.19970.069*
C1−0.2411 (5)0.3880 (4)0.1032 (2)0.0574 (15)
H1B−0.21740.44690.12940.069*
C10−0.4203 (6)−0.1538 (4)−0.1182 (3)0.0649 (16)
H10A−0.3551−0.2110−0.11230.078*
C150.0737 (5)−0.0517 (4)0.1299 (3)0.0635 (16)
H15A0.1344−0.10970.14380.076*
C220.1907 (5)0.1739 (4)0.4688 (2)0.0571 (15)
H22A0.28230.18400.49510.069*
C29−0.5345 (6)0.0734 (5)0.3071 (2)0.0678 (16)
H29A−0.63370.05780.29320.081*
C28−0.4916 (6)0.1750 (5)0.3267 (2)0.0697 (17)
H28A−0.56130.22870.32480.084*
C8−0.6444 (6)−0.0731 (5)−0.1747 (2)0.0716 (18)
H8A−0.7299−0.0790−0.20550.086*
C9−0.5458 (7)−0.1579 (5)−0.1642 (2)0.0695 (17)
H9A−0.5655−0.2188−0.18900.083*
C32−0.1725 (6)−0.0692 (4)0.3244 (2)0.0483 (14)
O3−0.1965 (3)−0.1613 (3)0.34207 (15)0.0616 (10)
O4−0.0650 (3)−0.0519 (2)0.30026 (15)0.0594 (10)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Co10.0506 (4)0.0622 (5)0.0386 (4)−0.0010 (4)0.0055 (3)0.0012 (4)
O10.0366 (19)0.114 (3)0.044 (2)0.004 (2)0.0134 (17)0.015 (2)
O20.0424 (19)0.076 (2)0.038 (2)0.0024 (18)0.0062 (16)0.0077 (18)
N20.050 (3)0.051 (3)0.043 (3)0.000 (2)0.004 (2)0.005 (2)
C50.039 (3)0.064 (4)0.036 (3)−0.006 (3)0.013 (3)0.007 (3)
N10.048 (3)0.059 (3)0.040 (3)0.005 (2)0.006 (2)0.000 (2)
C40.036 (3)0.060 (4)0.040 (3)−0.003 (3)0.006 (2)0.002 (3)
C120.043 (3)0.056 (4)0.038 (3)−0.008 (3)0.013 (3)0.004 (3)
N40.046 (3)0.072 (3)0.039 (3)−0.008 (2)0.009 (2)0.001 (2)
C130.042 (3)0.054 (4)0.042 (3)−0.003 (3)0.014 (3)0.006 (3)
N30.051 (3)0.060 (3)0.045 (3)−0.013 (2)0.015 (2)−0.006 (2)
C180.040 (3)0.056 (4)0.036 (3)−0.005 (3)0.012 (2)0.001 (3)
C170.039 (3)0.051 (4)0.039 (3)−0.005 (3)0.014 (3)0.007 (3)
C190.047 (3)0.046 (3)0.043 (3)−0.002 (3)0.007 (3)−0.005 (3)
C60.051 (4)0.066 (4)0.040 (4)−0.015 (3)0.014 (3)−0.002 (3)
C200.038 (3)0.047 (3)0.031 (3)0.001 (3)0.001 (2)0.000 (2)
C310.039 (3)0.062 (4)0.035 (3)−0.001 (3)0.008 (3)0.002 (3)
C260.039 (3)0.066 (4)0.037 (3)0.003 (3)0.014 (3)0.009 (3)
C110.060 (4)0.063 (4)0.041 (4)−0.022 (3)0.025 (3)−0.004 (3)
C230.063 (4)0.097 (5)0.035 (3)0.011 (4)0.003 (3)0.007 (3)
C210.049 (3)0.060 (4)0.041 (3)−0.003 (3)0.012 (3)−0.005 (3)
C30.042 (3)0.072 (4)0.052 (4)0.004 (3)0.001 (3)0.004 (3)
C250.040 (3)0.055 (3)0.041 (3)0.003 (3)0.005 (3)0.001 (3)
C240.049 (3)0.084 (4)0.043 (4)−0.005 (3)0.011 (3)0.004 (3)
C300.056 (4)0.076 (4)0.056 (4)−0.003 (3)0.010 (3)0.004 (3)
C70.052 (4)0.084 (5)0.043 (4)−0.016 (3)0.009 (3)0.004 (3)
C140.053 (3)0.062 (4)0.060 (4)−0.010 (3)0.022 (3)−0.002 (3)
C270.053 (4)0.069 (4)0.067 (4)0.003 (3)0.018 (3)0.002 (3)
C20.066 (4)0.069 (4)0.065 (4)−0.002 (3)−0.003 (3)−0.011 (4)
C160.051 (3)0.072 (4)0.048 (4)0.005 (3)0.007 (3)0.008 (4)
C10.058 (4)0.057 (4)0.055 (4)0.011 (3)0.009 (3)−0.014 (3)
C100.076 (4)0.068 (4)0.058 (4)−0.015 (3)0.029 (3)−0.010 (3)
C150.062 (4)0.061 (4)0.068 (4)0.001 (3)0.016 (3)0.001 (4)
C220.047 (3)0.074 (4)0.046 (4)0.002 (3)−0.001 (3)−0.002 (3)
C290.037 (3)0.103 (5)0.062 (4)−0.004 (4)0.006 (3)0.006 (4)
C280.048 (4)0.091 (5)0.073 (4)0.011 (4)0.019 (3)0.007 (4)
C80.074 (5)0.097 (5)0.044 (4)−0.028 (4)0.011 (3)0.004 (4)
C90.090 (5)0.079 (5)0.042 (4)−0.034 (4)0.019 (4)−0.016 (3)
C320.052 (4)0.056 (4)0.032 (3)−0.001 (4)−0.002 (3)−0.007 (3)
O30.066 (2)0.057 (2)0.070 (3)0.004 (2)0.032 (2)0.006 (2)
O40.050 (2)0.068 (3)0.063 (2)0.003 (2)0.019 (2)0.004 (2)
Geometric parameters (Å, °) top
Co1—O3i2.087 (3)C23—C221.372 (5)
Co1—N22.093 (4)C23—C241.388 (5)
Co1—O12.105 (3)C23—H23A0.9300
Co1—N12.115 (4)C21—C221.374 (5)
Co1—O22.151 (3)C21—H21A0.9300
Co1—O4i2.185 (3)C3—C21.376 (5)
Co1—C192.460 (5)C3—H3B0.9300
Co1—C32i2.463 (6)C25—C241.386 (5)
O1—C191.256 (4)C24—H24A0.9300
O2—C191.274 (4)C30—C291.384 (6)
N2—C161.322 (5)C30—H30A0.9300
N2—C171.363 (5)C7—C81.346 (6)
C5—N41.344 (5)C7—H7A0.9300
C5—C121.424 (6)C14—C151.381 (6)
C5—C41.454 (6)C14—H14A0.9300
N1—C11.322 (5)C27—C281.384 (6)
N1—C181.360 (5)C27—H27A0.9300
C4—C181.391 (5)C2—C11.406 (5)
C4—C31.398 (5)C2—H2B0.9300
C12—N31.323 (5)C16—C151.383 (5)
C12—C131.465 (5)C16—H16A0.9300
N4—C61.355 (5)C1—H1B0.9300
C13—C171.384 (6)C10—C91.369 (6)
C13—C141.402 (6)C10—H10A0.9300
N3—C111.367 (5)C15—H15A0.9300
C18—C171.450 (6)C22—H22A0.9300
C19—C201.501 (6)C29—C281.374 (6)
C6—C111.414 (6)C29—H29A0.9300
C6—C71.432 (6)C28—H28A0.9300
C20—C251.384 (5)C8—C91.390 (6)
C20—C211.385 (5)C8—H8A0.9300
C31—C261.394 (6)C9—H9A0.9300
C31—C301.400 (5)C32—O41.246 (5)
C31—C321.494 (6)C32—O31.252 (5)
C26—C271.403 (5)C32—Co1ii2.463 (6)
C26—C251.502 (5)O3—Co1ii2.087 (3)
C11—C101.409 (6)O4—Co1ii2.185 (3)
O3i—Co1—N297.50 (14)C31—C26—C27117.8 (5)
O3i—Co1—O197.66 (12)C31—C26—C25122.2 (5)
N2—Co1—O195.31 (15)C27—C26—C25119.0 (5)
O3i—Co1—N1102.12 (13)N3—C11—C10119.5 (6)
N2—Co1—N178.05 (16)N3—C11—C6121.5 (5)
O1—Co1—N1159.78 (13)C10—C11—C6119.0 (5)
O3i—Co1—O2155.35 (12)C22—C23—C24119.6 (5)
N2—Co1—O297.96 (13)C22—C23—H23A120.2
O1—Co1—O261.86 (10)C24—C23—H23A120.2
N1—Co1—O299.79 (13)C22—C21—C20121.8 (5)
O3i—Co1—O4i60.87 (12)C22—C21—H21A119.1
N2—Co1—O4i153.61 (14)C20—C21—H21A119.1
O1—Co1—O4i102.11 (12)C2—C3—C4120.6 (5)
N1—Co1—O4i91.27 (14)C2—C3—H3B119.7
O2—Co1—O4i107.67 (12)C4—C3—H3B119.7
O3i—Co1—C19127.04 (14)C20—C25—C24117.8 (4)
N2—Co1—C1998.21 (15)C20—C25—C26127.0 (4)
O1—Co1—C1930.71 (11)C24—C25—C26115.1 (4)
N1—Co1—C19130.56 (15)C25—C24—C23121.9 (5)
O2—Co1—C1931.16 (11)C25—C24—H24A119.0
O4i—Co1—C19106.91 (14)C23—C24—H24A119.0
O3i—Co1—C32i30.54 (13)C29—C30—C31120.3 (5)
N2—Co1—C32i126.93 (16)C29—C30—H30A119.9
O1—Co1—C32i100.54 (13)C31—C30—H30A119.9
N1—Co1—C32i98.65 (15)C8—C7—C6119.6 (5)
O2—Co1—C32i134.08 (15)C8—C7—H7A120.2
O4i—Co1—C32i30.36 (12)C6—C7—H7A120.2
C19—Co1—C32i120.29 (15)C15—C14—C13120.0 (5)
C19—O1—Co190.5 (3)C15—C14—H14A120.0
C19—O2—Co187.9 (3)C13—C14—H14A120.0
C16—N2—C17117.1 (4)C28—C27—C26121.7 (5)
C16—N2—Co1127.6 (4)C28—C27—H27A119.2
C17—N2—Co1115.3 (3)C26—C27—H27A119.2
N4—C5—C12121.5 (5)C3—C2—C1117.6 (5)
N4—C5—C4118.2 (5)C3—C2—H2B121.2
C12—C5—C4120.3 (5)C1—C2—H2B121.2
C1—N1—C18118.4 (4)N2—C16—C15124.8 (5)
C1—N1—Co1127.2 (4)N2—C16—H16A117.6
C18—N1—Co1114.3 (3)C15—C16—H16A117.6
C18—C4—C3117.4 (5)N1—C1—C2123.3 (5)
C18—C4—C5119.0 (5)N1—C1—H1B118.3
C3—C4—C5123.5 (4)C2—C1—H1B118.3
N3—C12—C5122.5 (5)C9—C10—C11119.5 (5)
N3—C12—C13118.1 (5)C9—C10—H10A120.2
C5—C12—C13119.3 (5)C11—C10—H10A120.2
C5—N4—C6116.5 (4)C14—C15—C16117.5 (5)
C17—C13—C14117.5 (5)C14—C15—H15A121.2
C17—C13—C12119.3 (5)C16—C15—H15A121.2
C14—C13—C12123.0 (5)C23—C22—C21118.9 (4)
C12—N3—C11116.3 (4)C23—C22—H22A120.6
N1—C18—C4122.7 (5)C21—C22—H22A120.6
N1—C18—C17116.4 (4)C28—C29—C30120.1 (5)
C4—C18—C17120.9 (5)C28—C29—H29A119.9
N2—C17—C13123.1 (5)C30—C29—H29A119.9
N2—C17—C18115.9 (5)C29—C28—C27119.7 (5)
C13—C17—C18121.0 (5)C29—C28—H28A120.1
O1—C19—O2119.7 (4)C27—C28—H28A120.1
O1—C19—C20119.3 (4)C7—C8—C9121.0 (6)
O2—C19—C20120.9 (4)C7—C8—H8A119.5
O1—C19—Co158.8 (2)C9—C8—H8A119.5
O2—C19—Co160.9 (2)C10—C9—C8121.5 (6)
C20—C19—Co1175.4 (3)C10—C9—H9A119.2
N4—C6—C11121.6 (5)C8—C9—H9A119.2
N4—C6—C7119.1 (5)O4—C32—O3120.2 (5)
C11—C6—C7119.3 (5)O4—C32—C31121.1 (5)
C25—C20—C21119.9 (4)O3—C32—C31118.6 (5)
C25—C20—C19124.0 (4)O4—C32—Co1ii62.4 (3)
C21—C20—C19116.0 (4)O3—C32—Co1ii57.9 (3)
C26—C31—C30120.3 (5)C31—C32—Co1ii172.7 (3)
C26—C31—C32121.8 (5)C32—O3—Co1ii91.6 (3)
C30—C31—C32117.9 (5)C32—O4—Co1ii87.3 (3)
Symmetry codes: (i) −x, y+1/2, −z+1/2; (ii) −x, y−1/2, −z+1/2.
Table 1
Selected geometric parameters (Å, °) top
Co1—O3i2.087 (3)Co1—N12.115 (4)
Co1—N22.093 (4)Co1—O22.151 (3)
Co1—O12.105 (3)Co1—O4i2.185 (3)
N2—Co1—O195.31 (15)N2—Co1—O297.96 (13)
N2—Co1—N178.05 (16)O1—Co1—O261.86 (10)
O1—Co1—N1159.78 (13)N1—Co1—O299.79 (13)
Symmetry codes: (i) −x, y+1/2, −z+1/2.
Acknowledgements top

The authors thank BaiCheng Normal College for supporting this work.

references
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