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Acta Cryst. (2007). E63, m2374    [ doi:10.1107/S1600536807040330 ]

catena-Poly[[(2,2'-bipyridine)nickel(II)]-[mu]-imidazole-4,5-dicarboxylato]

L.-J. Hao and T.-L. Yu

Abstract top

The title compound, [Ni(C5HN2O4)(C10H8N2)]n, is isotypic with its CoII and ZnII analogues. The asymmetric unit contains two crystallographically independent monomer units with similar geometry. The NiII cations have a distorted octahedral environment formed by two carboxylate O atoms and by four N atoms, two of which belong to the 2,2'-bipyridine ligands and two to different imidazole rings. One imidazole-4,5-carboxylate ligand is connected to two NiII cations, which results in the formation of one-dimensional zigzag chains parallel to [010].

Comment top

In connection with our strucure determination of catena-poly[[(2,2'-bipyridine)cobalt(II)]-µ-imidazole-4,5-dicarboxylato] (Hao et al., 2007), we report here the isotypic structure of the NiII compound. The ZnII analogue (Li et al., 2007) crystallizes also isotypically.

In the title compound, (I), two crystallographically independent monomer units are present in the asymmetric unit. The NiII cations have a distorted octahedral coordination sphere formed by two carboxylate O atoms and by four N atoms, two of which belong to the 2,2'-bipyridine ligand and the other two to the imidazole ring (Fig. 1). The Ni—O and Ni—N bond lengths are in the range of 2.1543 (14)–2.2562 (15) and 2.0775 (17)–2.2721 (17) Å, respectively, and are similar to the M—O and M—N bond lengths (M = Co, Zn) observed in the corresponding isotypic structures. The two carboxylate groups of the imidazole-4,5-dicarboxylate ligand coordinate in a monodentate fashion with the NiII cations, whereby the connectivity between the cations and the ligands gives rise to one-dimensional zigzag chains along [010] (Fig. 2). The 2,2'-bipyridine ligands are situated in the space between the chains.

Related literature top

For the isotypic CoII and ZnII structures, see: Hao et al. (2007); Li et al. (2007).

Experimental top

All chemicals were purchased from Acros Co. Ltd. The title compound was obtained from the hydrothermal reaction (30 ml autoclave at 452 K for 3 d) of NiCl2.6H2O (0.5 mmol), imidazole-4,5-dicarboxylic acid (0.5 mmol), 2,2'-bipyridine (0.5 mmol) and KOH (1 mmol) in 20 ml distilled water. Green crystals were obtained in a yield of approximately 22%. Analysis calculated for C15H9N4NiO4: C 48.96, H 2.47, N 15.23%; Found: C 48.88, H 2.47, N 15.16%.

Refinement top

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

Computing details top

Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 2001); software used to prepare material for publication: SHELXTL.

Figures top
[Figure 1] Fig. 1. The two independent molecules in (I), displayed with anisotropic displacement ellipsoids at the 30% probability level for all non-H atoms. H atoms are given as spheres of arbitrary radius. [Symmetry code: (i) -x + 1, y + 1/2, -z + 3/2.]
[Figure 2] Fig. 2. A zigzag chain extending parallel to [010] in (I). H atoms have been omitted for clariry.
catena-Poly[[(2,2'-bipyridine)nickel(II)]-µ-imidazole-4,5-dicarboxylato] top
Crystal data top
[Ni(C5HN2O4)(C10H8N2)]F(000) = 1496
Mr = 367.97Dx = 1.714 Mg m−3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybcCell parameters from 5614 reflections
a = 20.424 (2) Åθ = 2.3–26.1°
b = 9.6712 (10) ŵ = 1.39 mm−1
c = 14.751 (1) ÅT = 293 K
β = 101.798 (1)°Cube, green
V = 2852.1 (4) Å30.15 × 0.15 × 0.15 mm
Z = 8
Data collection top
Bruker APEXII CCD area-detector
diffractometer		5614 independent reflections
Radiation source: fine-focus sealed tube4906 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.027
φ and ω scansθmax = 26.1°, θmin = 2.3°
Absorption correction: multi-scan
(SADABS; Bruker, 2001)		h = −25→20
Tmin = 0.819, Tmax = 0.819k = −11→10
15248 measured reflectionsl = −17→18
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.027Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.066H-atom parameters constrained
S = 1.00 w = 1/[σ2(Fo2) + (0.031P)2 + 1.5005P]
where P = (Fo2 + 2Fc2)/3
5614 reflections(Δ/σ)max = 0.039
433 parametersΔρmax = 0.53 e Å−3
0 restraintsΔρmin = −0.31 e Å−3
Crystal data top
[Ni(C5HN2O4)(C10H8N2)]V = 2852.1 (4) Å3
Mr = 367.97Z = 8
Monoclinic, P21/cMo Kα radiation
a = 20.424 (2) ŵ = 1.39 mm−1
b = 9.6712 (10) ÅT = 293 K
c = 14.751 (1) Å0.15 × 0.15 × 0.15 mm
β = 101.798 (1)°
Data collection top
Bruker APEXII CCD area-detector
diffractometer		5614 independent reflections
Absorption correction: multi-scan
(SADABS; Bruker, 2001)		4906 reflections with I > 2σ(I)
Tmin = 0.819, Tmax = 0.819Rint = 0.027
15248 measured reflectionsθmax = 26.1°
Refinement top
R[F2 > 2σ(F2)] = 0.027H-atom parameters constrained
wR(F2) = 0.066Δρmax = 0.53 e Å−3
S = 1.00Δρmin = −0.31 e Å−3
5614 reflectionsAbsolute structure: ?
433 parametersFlack parameter: ?
0 restraintsRogers parameter: ?
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
C10.70626 (11)0.3208 (2)0.84600 (14)0.0280 (5)
H10.67030.37950.82500.034*
C20.76975 (11)0.3757 (2)0.86436 (14)0.0292 (5)
H20.77650.46960.85650.035*
C30.82307 (11)0.2885 (2)0.89466 (15)0.0313 (5)
H30.86650.32270.90760.038*
C40.81098 (10)0.1489 (2)0.90560 (14)0.0295 (5)
H40.84640.08810.92500.035*
C50.74584 (10)0.1011 (2)0.88736 (13)0.0236 (4)
C60.72867 (10)−0.0457 (2)0.90085 (13)0.0243 (4)
C70.77634 (11)−0.1445 (2)0.93791 (14)0.0290 (5)
H70.8213−0.12060.95440.035*
C80.75597 (11)−0.2782 (2)0.94981 (15)0.0327 (5)
H80.7872−0.34580.97380.039*
C90.68885 (11)−0.3107 (2)0.92581 (16)0.0330 (5)
H90.6739−0.40000.93350.040*
C100.64444 (11)−0.2073 (2)0.89007 (15)0.0311 (5)
H100.5992−0.22880.87430.037*
C110.52685 (10)0.2341 (2)0.94608 (14)0.0250 (4)
C120.51350 (9)0.3154 (2)0.85976 (13)0.0226 (4)
C130.52113 (10)0.3687 (2)0.72120 (14)0.0240 (4)
H130.53440.36820.66450.029*
C140.47021 (10)0.4233 (2)0.82990 (13)0.0218 (4)
C150.41987 (10)0.4930 (2)0.87196 (14)0.0249 (4)
C160.86416 (12)1.3021 (2)0.17951 (16)0.0336 (5)
H160.90881.31700.20690.040*
C170.82576 (13)1.4144 (2)0.14208 (18)0.0409 (6)
H170.84431.50240.14340.049*
C180.75971 (13)1.3921 (3)0.10311 (18)0.0425 (6)
H180.73251.46540.07790.051*
C190.73392 (12)1.2599 (2)0.10156 (15)0.0349 (5)
H190.68921.24320.07540.042*
C200.77551 (10)1.1524 (2)0.13943 (13)0.0259 (4)
C210.75113 (10)1.0085 (2)0.14528 (14)0.0256 (4)
C220.68389 (11)0.9734 (3)0.12219 (16)0.0369 (5)
H220.65221.03880.09590.044*
C230.66441 (12)0.8402 (3)0.13871 (18)0.0436 (6)
H230.61950.81560.12410.052*
C240.95914 (9)0.7532 (2)0.33096 (13)0.0207 (4)
C250.77823 (11)0.7847 (2)0.19550 (15)0.0298 (5)
H250.81080.72010.21990.036*
C260.93275 (10)0.8466 (2)0.39410 (13)0.0237 (4)
C271.04263 (9)0.5862 (2)0.43335 (13)0.0213 (4)
C281.00285 (9)0.6432 (2)0.34751 (13)0.0212 (4)
C290.97693 (10)0.6785 (2)0.20109 (13)0.0228 (4)
H290.97480.66930.13780.027*
C300.71208 (11)0.7442 (3)0.17694 (16)0.0383 (6)
H300.70000.65470.18980.046*
N10.69405 (8)0.18621 (18)0.85704 (11)0.0246 (4)
N20.66336 (8)−0.07771 (18)0.87706 (12)0.0253 (4)
N30.54579 (8)0.28113 (17)0.79038 (11)0.0235 (4)
N40.47564 (8)0.45708 (17)0.74142 (11)0.0231 (4)
N50.79758 (8)0.91347 (18)0.17983 (11)0.0246 (4)
N60.94283 (8)0.77605 (17)0.23760 (11)0.0219 (4)
N71.01414 (8)0.59611 (17)0.26445 (11)0.0220 (4)
N80.84001 (8)1.17327 (18)0.17805 (12)0.0269 (4)
Ni10.899423 (11)0.97523 (2)0.214416 (15)0.01502 (7)
Ni20.597902 (11)0.09584 (2)0.819724 (16)0.01727 (7)
O10.56785 (7)0.13633 (15)0.95264 (10)0.0299 (3)
O20.49461 (7)0.26686 (16)1.00906 (10)0.0322 (3)
O30.41600 (7)0.45809 (16)0.95508 (10)0.0306 (3)
O40.38170 (7)0.57763 (15)0.82446 (10)0.0296 (3)
O51.03289 (7)0.63626 (15)0.51070 (9)0.0262 (3)
O61.08547 (7)0.49642 (14)0.42874 (9)0.0237 (3)
O70.94594 (8)0.81809 (16)0.47985 (10)0.0344 (4)
O80.89858 (7)0.94843 (15)0.35916 (9)0.0270 (3)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
C10.0278 (11)0.0235 (11)0.0318 (11)0.0002 (9)0.0040 (9)0.0035 (9)
C20.0332 (12)0.0245 (11)0.0292 (11)−0.0064 (9)0.0051 (9)0.0023 (9)
C30.0241 (11)0.0357 (13)0.0328 (11)−0.0075 (9)0.0028 (9)0.0031 (10)
C40.0241 (11)0.0297 (12)0.0328 (11)0.0003 (9)0.0013 (9)0.0048 (9)
C50.0223 (10)0.0255 (11)0.0218 (10)0.0007 (8)0.0019 (8)−0.0001 (8)
C60.0221 (10)0.0263 (11)0.0232 (10)−0.0004 (8)0.0020 (8)−0.0010 (8)
C70.0229 (11)0.0315 (12)0.0303 (11)0.0022 (9)0.0003 (8)−0.0005 (9)
C80.0333 (12)0.0264 (12)0.0359 (12)0.0079 (10)0.0010 (10)0.0044 (10)
C90.0357 (13)0.0224 (11)0.0398 (13)−0.0014 (9)0.0054 (10)0.0046 (9)
C100.0262 (11)0.0296 (12)0.0368 (12)−0.0039 (9)0.0045 (9)0.0025 (10)
C110.0220 (10)0.0249 (11)0.0260 (10)−0.0036 (9)−0.0001 (8)0.0002 (9)
C120.0190 (10)0.0241 (11)0.0237 (10)−0.0020 (8)0.0019 (8)−0.0006 (8)
C130.0216 (10)0.0264 (11)0.0237 (10)0.0017 (8)0.0038 (8)0.0000 (8)
C140.0187 (10)0.0222 (10)0.0234 (10)−0.0032 (8)0.0017 (8)−0.0004 (8)
C150.0218 (10)0.0242 (11)0.0284 (11)−0.0039 (8)0.0044 (8)−0.0014 (9)
C160.0342 (13)0.0281 (12)0.0414 (13)0.0024 (10)0.0145 (10)0.0002 (10)
C170.0481 (16)0.0254 (12)0.0533 (15)0.0066 (11)0.0202 (12)0.0045 (11)
C180.0441 (15)0.0357 (14)0.0500 (15)0.0196 (11)0.0154 (12)0.0124 (11)
C190.0306 (12)0.0398 (14)0.0345 (12)0.0107 (10)0.0067 (10)0.0073 (10)
C200.0244 (11)0.0321 (12)0.0223 (10)0.0060 (9)0.0074 (8)0.0028 (9)
C210.0225 (11)0.0325 (12)0.0212 (10)0.0036 (9)0.0028 (8)−0.0007 (8)
C220.0225 (11)0.0456 (15)0.0402 (13)0.0042 (10)0.0008 (10)−0.0012 (11)
C230.0224 (12)0.0523 (16)0.0536 (15)−0.0079 (11)0.0019 (11)−0.0087 (13)
C240.0189 (10)0.0216 (10)0.0211 (9)−0.0006 (8)0.0028 (8)0.0008 (8)
C250.0278 (11)0.0269 (12)0.0335 (12)−0.0030 (9)0.0034 (9)0.0001 (9)
C260.0228 (10)0.0242 (11)0.0237 (10)0.0014 (8)0.0039 (8)−0.0001 (8)
C270.0196 (10)0.0213 (10)0.0228 (10)−0.0026 (8)0.0039 (8)0.0000 (8)
C280.0202 (10)0.0217 (10)0.0211 (9)−0.0013 (8)0.0027 (8)−0.0008 (8)
C290.0247 (10)0.0247 (11)0.0183 (9)0.0004 (8)0.0030 (8)0.0000 (8)
C300.0339 (13)0.0375 (14)0.0430 (13)−0.0103 (11)0.0064 (10)−0.0029 (11)
N10.0220 (9)0.0239 (9)0.0263 (9)−0.0012 (7)0.0013 (7)0.0002 (7)
N20.0215 (9)0.0238 (9)0.0297 (9)−0.0012 (7)0.0033 (7)0.0019 (7)
N30.0213 (9)0.0253 (9)0.0230 (8)0.0009 (7)0.0027 (7)−0.0006 (7)
N40.0193 (8)0.0249 (9)0.0241 (8)−0.0006 (7)0.0018 (7)0.0010 (7)
N50.0213 (9)0.0282 (10)0.0243 (9)0.0004 (7)0.0046 (7)0.0010 (7)
N60.0229 (9)0.0225 (9)0.0198 (8)0.0008 (7)0.0029 (7)0.0020 (7)
N70.0230 (9)0.0221 (9)0.0201 (8)0.0014 (7)0.0028 (7)−0.0004 (7)
N80.0253 (9)0.0261 (10)0.0300 (9)0.0032 (7)0.0073 (7)0.0010 (8)
Ni10.01218 (12)0.01396 (13)0.01827 (12)0.00018 (9)0.00154 (9)0.00298 (9)
Ni20.01201 (12)0.01406 (13)0.02351 (13)0.00011 (9)−0.00159 (9)−0.00094 (9)
O10.0289 (8)0.0294 (8)0.0297 (8)0.0042 (7)0.0017 (6)0.0053 (6)
O20.0350 (9)0.0362 (9)0.0261 (8)0.0005 (7)0.0081 (7)0.0033 (7)
O30.0313 (8)0.0339 (9)0.0290 (8)−0.0002 (7)0.0117 (6)0.0004 (7)
O40.0233 (8)0.0314 (8)0.0345 (8)0.0059 (6)0.0067 (6)0.0015 (7)
O50.0282 (8)0.0299 (8)0.0197 (7)0.0023 (6)0.0027 (6)0.0006 (6)
O60.0213 (7)0.0253 (8)0.0237 (7)0.0044 (6)0.0026 (6)0.0023 (6)
O70.0453 (10)0.0375 (9)0.0213 (7)0.0138 (7)0.0086 (7)0.0016 (6)
O80.0298 (8)0.0255 (8)0.0262 (7)0.0078 (6)0.0071 (6)0.0017 (6)
Geometric parameters (Å, º) top
C1—N11.341 (3)C18—H180.9300
C1—C21.376 (3)C19—C201.386 (3)
C1—H10.9300C19—H190.9300
C2—C31.378 (3)C20—N81.339 (3)
C2—H20.9300C20—C211.487 (3)
C3—C41.388 (3)C21—N51.344 (3)
C3—H30.9300C21—C221.388 (3)
C4—C51.382 (3)C22—C231.385 (3)
C4—H40.9300C22—H220.9300
C5—N11.343 (3)C23—C301.380 (3)
C5—C61.486 (3)C23—H230.9300
C6—N21.344 (3)C24—N61.367 (2)
C6—C71.393 (3)C24—C281.378 (3)
C7—C81.381 (3)C24—C261.477 (3)
C7—H70.9300C25—N51.341 (3)
C8—C91.380 (3)C25—C301.379 (3)
C8—H80.9300C25—H250.9300
C9—C101.380 (3)C26—O81.255 (2)
C9—H90.9300C26—O71.269 (2)
C10—N21.337 (3)C27—O61.244 (2)
C10—H100.9300C27—O51.292 (2)
C11—O11.253 (2)C27—C281.465 (3)
C11—O21.283 (2)C28—N71.370 (2)
C11—C121.474 (3)C29—N71.340 (2)
C12—N31.367 (3)C29—N61.348 (3)
C12—C141.380 (3)C29—H290.9300
C13—N41.340 (3)C30—H300.9300
C13—N31.343 (3)Ni1—N7i2.0869 (16)
C13—H130.9300Ni1—N62.1188 (17)
C14—N41.372 (3)Ni1—N52.1235 (17)
C14—C151.469 (3)Ni1—N82.2721 (17)
C15—O41.243 (2)Ni1—O82.1543 (14)
C15—O31.290 (2)Ni1—O6i2.2052 (14)
C16—N81.338 (3)Ni2—N4ii2.0775 (17)
C16—C171.387 (3)Ni2—N32.0840 (17)
C16—H160.9300Ni2—N12.1167 (17)
C17—C181.371 (4)Ni2—N22.2040 (17)
C17—H170.9300Ni2—O12.2060 (15)
C18—C191.381 (3)Ni2—O4ii2.2562 (15)
N1—C1—C2122.8 (2)C30—C25—H25118.6
N1—C1—H1118.6O8—C26—O7124.56 (19)
C2—C1—H1118.6O8—C26—C24117.73 (17)
C1—C2—C3118.6 (2)O7—C26—C24117.72 (18)
C1—C2—H2120.7O6—C27—O5123.16 (17)
C3—C2—H2120.7O6—C27—C28119.16 (17)
C2—C3—C4119.1 (2)O5—C27—C28117.63 (17)
C2—C3—H3120.5N7—C28—C24108.64 (16)
C4—C3—H3120.5N7—C28—C27118.86 (17)
C5—C4—C3119.3 (2)C24—C28—C27131.94 (18)
C5—C4—H4120.3N7—C29—N6113.77 (17)
C3—C4—H4120.3N7—C29—H29123.1
N1—C5—C4121.45 (19)N6—C29—H29123.1
N1—C5—C6116.03 (17)C23—C30—C25118.0 (2)
C4—C5—C6122.51 (19)C23—C30—H30121.0
N2—C6—C7121.41 (19)C25—C30—H30121.0
N2—C6—C5115.71 (18)C5—N1—C1118.79 (18)
C7—C6—C5122.86 (19)C5—N1—Ni2117.35 (14)
C8—C7—C6119.2 (2)C1—N1—Ni2123.69 (14)
C8—C7—H7120.4C10—N2—C6118.62 (18)
C6—C7—H7120.4C10—N2—Ni2126.76 (14)
C7—C8—C9119.3 (2)C6—N2—Ni2114.62 (13)
C7—C8—H8120.3C13—N3—C12104.63 (16)
C9—C8—H8120.3C13—N3—Ni2142.82 (14)
C10—C9—C8118.3 (2)C12—N3—Ni2110.93 (13)
C10—C9—H9120.9C13—N4—C14104.74 (16)
C8—C9—H9120.9C13—N4—Ni2iii141.99 (14)
N2—C10—C9123.2 (2)C14—N4—Ni2iii112.03 (13)
N2—C10—H10118.4C25—N5—C21119.34 (18)
C9—C10—H10118.4C25—N5—Ni1121.91 (14)
O1—C11—O2124.32 (19)C21—N5—Ni1118.67 (14)
O1—C11—C12118.16 (18)C29—N6—C24104.46 (16)
O2—C11—C12117.50 (18)C29—N6—Ni1143.59 (13)
N3—C12—C14108.67 (17)C24—N6—Ni1108.51 (13)
N3—C12—C11119.01 (18)C29—N7—C28104.53 (16)
C14—C12—C11132.26 (19)C29—N7—Ni1iv141.18 (14)
N4—C13—N3113.74 (18)C28—N7—Ni1iv110.15 (12)
N4—C13—H13123.1C16—N8—C20118.33 (18)
N3—C13—H13123.1C16—N8—Ni1127.12 (15)
N4—C14—C12108.22 (17)C20—N8—Ni1113.87 (14)
N4—C14—C15119.50 (17)N7i—Ni1—N699.90 (6)
C12—C14—C15132.07 (19)N7i—Ni1—N5161.90 (6)
O4—C15—O3123.69 (19)N6—Ni1—N598.05 (6)
O4—C15—C14118.47 (18)N7i—Ni1—O895.58 (6)
O3—C15—C14117.78 (18)N6—Ni1—O879.55 (6)
N8—C16—C17123.1 (2)N5—Ni1—O889.91 (6)
N8—C16—H16118.4N7i—Ni1—O6i79.12 (6)
C17—C16—H16118.4N6—Ni1—O6i95.92 (6)
C18—C17—C16118.1 (2)N5—Ni1—O6i96.78 (6)
C18—C17—H17120.9O8—Ni1—O6i172.42 (5)
C16—C17—H17120.9N7i—Ni1—N887.57 (6)
C17—C18—C19119.5 (2)N6—Ni1—N8171.93 (6)
C17—C18—H18120.3N5—Ni1—N874.38 (6)
C19—C18—H18120.3O8—Ni1—N8102.90 (6)
C18—C19—C20119.2 (2)O6i—Ni1—N882.42 (6)
C18—C19—H19120.4N4ii—Ni2—N399.91 (6)
C20—C19—H19120.4N4ii—Ni2—N1158.35 (7)
N8—C20—C19121.8 (2)N3—Ni2—N196.10 (7)
N8—C20—C21115.37 (18)N4ii—Ni2—N290.15 (6)
C19—C20—C21122.7 (2)N3—Ni2—N2168.11 (6)
N5—C21—C22120.8 (2)N1—Ni2—N275.93 (6)
N5—C21—C20116.31 (18)N4ii—Ni2—O1101.11 (6)
C22—C21—C20122.7 (2)N3—Ni2—O178.98 (6)
C23—C22—C21119.3 (2)N1—Ni2—O196.17 (6)
C23—C22—H22120.3N2—Ni2—O192.94 (6)
C21—C22—H22120.3N4ii—Ni2—O4ii78.28 (6)
C30—C23—C22119.6 (2)N3—Ni2—O4ii93.22 (6)
C30—C23—H23120.2N1—Ni2—O4ii86.39 (6)
C22—C23—H23120.2N2—Ni2—O4ii95.04 (6)
N6—C24—C28108.60 (17)O1—Ni2—O4ii171.99 (5)
N6—C24—C26119.41 (17)C11—O1—Ni2111.60 (12)
C28—C24—C26131.89 (18)C15—O4—Ni2iii111.54 (13)
N5—C25—C30122.8 (2)C27—O6—Ni1iv110.79 (12)
N5—C25—H25118.6C26—O8—Ni1112.64 (12)
Symmetry codes: (i) −x+2, y+1/2, −z+1/2; (ii) −x+1, y−1/2, −z+3/2; (iii) −x+1, y+1/2, −z+3/2; (iv) −x+2, y−1/2, −z+1/2.
Selected bond lengths (Å) top
Ni1—N7i2.0869 (16)Ni2—N4ii2.0775 (17)
Ni1—N62.1188 (17)Ni2—N32.0840 (17)
Ni1—N52.1235 (17)Ni2—N12.1167 (17)
Ni1—N82.2721 (17)Ni2—N22.2040 (17)
Ni1—O82.1543 (14)Ni2—O12.2060 (15)
Ni1—O6i2.2052 (14)Ni2—O4ii2.2562 (15)
Symmetry codes: (i) −x+2, y+1/2, −z+1/2; (ii) −x+1, y−1/2, −z+3/2.
Acknowledgements top

The authors thank Shandong Institute of Light Industry for financial support.

references
References top

Bruker (2001). SADABS, SAINT and SHELXTL. Bruker AXS Inc., Madison, Wisconsin, USA. [SAINT-Plus cited in computing section - which is correct?]

Bruker (2004). APEX2. Bruker AXS Inc., Madison, Wisconsin, USA.

Hao, L.-J., Bao, Z.-M. & Yu, T.-L. (2007). Acta Cryst. E63, m1871–?.

Li, X.-M., Dong, Y.-H., Wang, Q.-W. & Liu, B. (2007). Acta Cryst. E63, m1274–m1276.

Sheldrick, G. M. (1997). SHELXS97 and SHELXL97. University of Göttingen, Germany.