supplementary materials


HTML versionpdf versioncif file3d viewstructure factorssupplementary materialsCIF check reportsimilar papers Open access

at2774 scheme

Acta Cryst. (2009). E65, m623    [ doi:10.1107/S1600536809016286 ]

Poly[aqua[[mu]2-1,2-bis(imidazol-1-ylmethyl)benzene-[kappa]2N3:N3']([mu]2-5-bromobenzene-1,3-dicarboxylato-[kappa]3O1,O1':O3)nickel(II)]

K. Zhu, H. Chen and G.-X. Liu

Abstract top

In the two-dimensional title coordination polymer, [Ni(C8H3BrO4)(C14H14N4)(H2O)]n, the NiII atom adopts a distorted octahedral geometry, being ligated by three O atoms from two different 5-bromobenzene-1,3-dicarboxylate ligands, two N atoms from two 1,2-bis(imidazol-1-ylmethyl)benzene ligands and one coordinated water molecule. The Ni atoms are bridged by the 5-bromobenzene-1,3-dicarboxylate ligands, forming chains, which are further linked by 1,2-bis(imidazol-1-ylmethyl)benzene, generating a layer structure parallel to (001).

Comment top

The self-assembly of coordination polymers has attracted considerable attention in the past decade. This arises mainly for their various intriguing topological structures and their potential applications in material chemistry. Recently significant work has been carried out by using metal ions assembly with bis(imidazole) ligands interconnected by flexible spacers (Qi et al., 2008; Liu et al., 2009). From careful inspection of the reported cases, we found that: the ligand exhibits a special ability to formulate the compounds, and different organic anions play an important role in directing the final structures and topologies (Hu et al., 2008). Inspired by the aftermentioned considerations, 1,2-bis(imidazol-1-ylmethyl)benzene was chosen as neutral ligands, 5-bromobenzene-1,3-dicarboxylate were chosen as co-ligands to construct the title complex (I).

The title coordination polymer is a two-dimensional layer coordination polymer. The NiII atom adopts a distorted octahedral geometry, being ligated by three O atoms from two different 5-bromobenzene-1,3-dicarboxylate ligand, two N atoms from two 1,2-bis(imidazol-1-ylmethyl)benzene and one coordinated water molecule, as shown in Fig. 1. The Ni atoms are bridged by 5-bromobenzene-1,3-dicarboxylate ligand to form one-dimensional chain, which are further linked by 1,2-bis(imidazol-1-ylmethyl)benzene to generate a two-dimensional layer structure, as shown in Fig. 2.

Related literature top

For general background to self-assembly coordination polymers with metal ions and bis(imidazole) ligands interconnected by flexible spacers, see: Qi et al. (2008); Liu et al. (2009). For the role played by different organic anions in directing the final structure and topology, see: Hu et al. (2008). For related structures, see: Liu et al. (2008).

Experimental top

A mixture of Ni(NO3)2.6H2O (58.2 mg, 0.2 mmol), 5-bromobenzene-1,3-dicarboxylate acid (33.0 mg, 0.1 mmol), 1,2-bis(imidazol-1-ylmethyl)benzene (23.8 mg, 0.1 mmol), NaOH (8 mg, 0.2 mmol) and H2O (15 ml) was added in a Teflon-lined stainless steel vessel. The vessel was sealed and heated for 3 d at 433 K. After the mixture was slowly cooled to room temperature, green block crystals were obtained in the yield of ca 67% based on Ni.

Refinement top

H atoms were positioned geometrically, with C—H = 0.93 and 0.96 Å for aromatic and methyl H atoms, respectively, and constrained to ride on their parent atoms, with Uiso(H) = xUeq(C), where x = 1.5 for methyl H and x = 1.2 for aromatic H atoms. The deepest hole is located 1.12 Å from atom C16.

Computing details top

Data collection: SMART (Bruker, 1997); cell refinement: SAINT (Bruker, 1997); data reduction: SAINT (Bruker, 1997); 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).

Figures top
[Figure 1] Fig. 1. The asymmetric unit of the title compound, extended to show the Ni coordination. Displacement ellipsoids are drawn at the 30% probability level. H atoms have been omitted for clarity. [Symmetry code: (i) x - 1, y + 1, z; (ii) x, y - 1, z.]
[Figure 2] Fig. 2. The two-dimensional layer structure of the title compound.
Poly[aqua[µ2-1,2-bis(imidazol-1-ylmethyl)benzene- κ2N3:N3'](µ2-5-bromobenzene-1,3-dicarboxylato- κ3O1,O1':O3)nickel(II)] top
Crystal data top
[Ni(C8H3BrO4)(C14H14N4)(H2O)]Z = 2
Mr = 558.03F000 = 564
Triclinic, P1Dx = 1.670 Mg m−3
Hall symbol: -P 1Mo Kα radiation
λ = 0.71073 Å
a = 9.1374 (12) ÅCell parameters from 2114 reflections
b = 10.1394 (14) Åθ = 2.4–24.0º
c = 12.9642 (18) ŵ = 2.72 mm−1
α = 80.046 (2)ºT = 293 K
β = 83.233 (2)ºBlock, green
γ = 70.004 (2)º0.26 × 0.20 × 0.18 mm
V = 1109.5 (3) Å3
Data collection top
Bruker SMART APEX CCD area-detector
diffractometer		4055 independent reflections
Radiation source: sealed tube3029 reflections with I > 2σ(I)
Monochromator: graphiteRint = 0.029
T = 293 Kθmax = 25.5º
φ and ω scansθmin = 1.6º
Absorption correction: multi-scan
(SADABS: Bruker, 1997)		h = −11→9
Tmin = 0.538, Tmax = 0.641k = −12→11
8172 measured reflectionsl = −15→15
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)] = 0.040H atoms treated by a mixture of
independent and constrained refinement
wR(F2) = 0.085  w = 1/[σ2(Fo2) + (0.029P)2 + 0.735P]
where P = (Fo2 + 2Fc2)/3
S = 1.04(Δ/σ)max < 0.001
4055 reflectionsΔρmax = 0.64 e Å−3
291 parametersΔρmin = −1.12 e Å−3
Primary atom site location: structure-invariant direct methodsExtinction correction: none
Crystal data top
[Ni(C8H3BrO4)(C14H14N4)(H2O)]γ = 70.004 (2)º
Mr = 558.03V = 1109.5 (3) Å3
Triclinic, P1Z = 2
a = 9.1374 (12) ÅMo Kα
b = 10.1394 (14) ŵ = 2.72 mm−1
c = 12.9642 (18) ÅT = 293 K
α = 80.046 (2)º0.26 × 0.20 × 0.18 mm
β = 83.233 (2)º
Data collection top
Bruker SMART APEX CCD area-detector
diffractometer		4055 independent reflections
Absorption correction: multi-scan
(SADABS: Bruker, 1997)		3029 reflections with I > 2σ(I)
Tmin = 0.538, Tmax = 0.641Rint = 0.029
8172 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.040291 parameters
wR(F2) = 0.085H atoms treated by a mixture of
independent and constrained refinement
S = 1.04Δρmax = 0.64 e Å−3
4055 reflectionsΔρmin = −1.12 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
Ni1−0.11002 (5)0.18147 (4)0.34656 (3)0.02475 (13)
N10.1280 (3)0.0814 (3)0.3229 (2)0.0286 (7)
N20.3530 (3)−0.0730 (3)0.2776 (2)0.0332 (7)
N30.4261 (3)−0.5489 (3)0.3554 (2)0.0372 (8)
N40.6546 (3)−0.7159 (3)0.3708 (2)0.0313 (7)
O1−0.0886 (3)0.3683 (2)0.27370 (18)0.0326 (6)
O2−0.0881 (4)0.4666 (3)0.4146 (2)0.0581 (9)
O3−0.1442 (3)0.9777 (2)0.37521 (17)0.0287 (5)
O4−0.1529 (3)1.0986 (2)0.21699 (17)0.0308 (6)
O1W−0.0840 (3)0.2116 (3)0.4966 (2)0.0341 (7)
Br1−0.14928 (6)0.76345 (5)−0.06669 (3)0.06060 (18)
C1−0.0961 (4)0.4705 (3)0.3195 (3)0.0282 (8)
C2−0.1196 (4)0.6114 (3)0.2502 (3)0.0251 (8)
C3−0.1282 (4)0.6229 (4)0.1422 (3)0.0291 (8)
H3−0.12270.54440.11200.035*
C4−0.1448 (4)0.7516 (4)0.0806 (3)0.0306 (8)
C5−0.1547 (4)0.8709 (4)0.1226 (3)0.0309 (8)
H5−0.16610.95690.07960.037*
C6−0.1473 (4)0.8599 (3)0.2307 (3)0.0239 (7)
C7−0.1303 (4)0.7308 (3)0.2944 (3)0.0242 (7)
H7−0.12600.72400.36650.029*
C8−0.1508 (4)0.9869 (3)0.2772 (3)0.0247 (8)
C90.2459 (5)0.1249 (4)0.3411 (3)0.0454 (11)
H90.23290.20760.36820.055*
C100.3845 (5)0.0317 (4)0.3144 (3)0.0489 (11)
H100.48260.03760.31990.059*
C110.1973 (4)−0.0380 (4)0.2842 (3)0.0342 (9)
H110.1444−0.09190.26380.041*
C120.4673 (4)−0.2047 (4)0.2455 (3)0.0468 (11)
H12A0.4975−0.27430.30740.056*
H12B0.5601−0.18480.21280.056*
C130.4039 (4)−0.2660 (4)0.1699 (3)0.0388 (10)
C140.4232 (5)−0.2198 (5)0.0633 (4)0.0578 (12)
H140.4746−0.15400.04120.069*
C150.3664 (5)−0.2713 (5)−0.0108 (4)0.060
H150.3765−0.2380−0.08190.072*
C160.2960 (4)−0.3706 (3)0.0223 (3)0.060
H160.2594−0.4069−0.02670.072*
C170.2782 (4)−0.4182 (3)0.1269 (3)0.0678 (15)
H170.2305−0.48710.14770.081*
C180.3299 (4)−0.3658 (4)0.2031 (3)0.0427 (10)
C190.3027 (5)−0.4184 (4)0.3173 (4)0.0550 (12)
H19A0.2961−0.34520.35870.066*
H19B0.2035−0.43560.32750.066*
C200.5718 (4)−0.6006 (4)0.3131 (3)0.0400 (10)
H200.6095−0.55980.25050.048*
C210.5557 (5)−0.7398 (4)0.4541 (3)0.0456 (10)
H210.5813−0.81540.50820.055*
C220.4150 (5)−0.6367 (5)0.4458 (3)0.0491 (11)
H220.3280−0.62780.49260.059*
H1WA−0.067 (5)0.285 (5)0.483 (3)0.059 (16)*
H1WB−0.008 (5)0.158 (4)0.529 (3)0.047 (14)*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Ni10.0333 (3)0.0136 (2)0.0266 (2)−0.00590 (19)−0.00584 (19)−0.00212 (18)
N10.0322 (18)0.0215 (16)0.0319 (16)−0.0074 (14)−0.0049 (13)−0.0040 (13)
N20.0253 (18)0.0315 (18)0.0413 (18)−0.0055 (14)−0.0041 (14)−0.0079 (14)
N30.0277 (18)0.0291 (18)0.048 (2)−0.0014 (14)−0.0009 (15)−0.0063 (15)
N40.0332 (18)0.0224 (17)0.0362 (17)−0.0061 (14)−0.0031 (14)−0.0044 (14)
O10.0496 (16)0.0163 (12)0.0325 (13)−0.0115 (12)−0.0013 (12)−0.0046 (10)
O20.118 (3)0.0240 (15)0.0365 (16)−0.0248 (16)−0.0304 (17)0.0041 (12)
O30.0397 (15)0.0172 (12)0.0281 (13)−0.0078 (11)−0.0057 (11)−0.0015 (10)
O40.0452 (16)0.0179 (13)0.0313 (13)−0.0116 (12)−0.0099 (11)−0.0011 (10)
O1W0.0465 (19)0.0231 (16)0.0311 (15)−0.0087 (15)−0.0100 (13)−0.0006 (12)
Br10.1137 (5)0.0440 (3)0.0264 (2)−0.0292 (3)−0.0036 (2)−0.00487 (19)
C10.035 (2)0.0182 (19)0.032 (2)−0.0078 (16)−0.0067 (16)−0.0026 (15)
C20.0250 (19)0.0179 (18)0.0340 (19)−0.0079 (15)−0.0046 (15)−0.0045 (15)
C30.036 (2)0.0230 (19)0.0308 (19)−0.0107 (16)−0.0016 (16)−0.0076 (15)
C40.041 (2)0.029 (2)0.0225 (18)−0.0123 (17)−0.0039 (16)−0.0030 (15)
C50.043 (2)0.0176 (18)0.0308 (19)−0.0116 (17)−0.0045 (17)0.0044 (15)
C60.0235 (19)0.0167 (17)0.0319 (19)−0.0069 (15)−0.0033 (15)−0.0031 (14)
C70.0260 (19)0.0187 (18)0.0283 (18)−0.0070 (15)−0.0077 (15)−0.0016 (14)
C80.0231 (19)0.0146 (18)0.035 (2)−0.0040 (14)−0.0050 (15)−0.0012 (15)
C90.047 (3)0.037 (2)0.062 (3)−0.018 (2)−0.005 (2)−0.018 (2)
C100.038 (3)0.050 (3)0.067 (3)−0.022 (2)−0.004 (2)−0.016 (2)
C110.030 (2)0.029 (2)0.046 (2)−0.0084 (17)−0.0084 (17)−0.0067 (17)
C120.026 (2)0.046 (3)0.063 (3)0.0006 (19)−0.003 (2)−0.018 (2)
C130.031 (2)0.035 (2)0.041 (2)0.0059 (18)−0.0073 (18)−0.0122 (19)
C140.063 (3)0.037 (3)0.056 (3)0.003 (2)−0.004 (2)−0.001 (2)
C150.0590.0500.0540.015−0.024−0.016
C160.0590.0500.0540.015−0.024−0.016
C170.038 (3)0.050 (3)0.115 (5)−0.002 (2)−0.015 (3)−0.029 (3)
C180.025 (2)0.034 (2)0.061 (3)0.0076 (18)−0.0108 (19)−0.013 (2)
C190.032 (2)0.039 (3)0.079 (3)0.003 (2)0.007 (2)−0.003 (2)
C200.035 (2)0.032 (2)0.045 (2)−0.0026 (19)0.0000 (19)−0.0001 (19)
C210.049 (3)0.044 (3)0.040 (2)−0.015 (2)−0.002 (2)0.0038 (19)
C220.044 (3)0.054 (3)0.046 (3)−0.016 (2)0.005 (2)−0.005 (2)
Geometric parameters (Å, °) top
Ni1—O12.027 (2)C4—C51.381 (5)
Ni1—N4i2.057 (3)C5—C61.395 (5)
Ni1—N12.072 (3)C5—H50.9300
Ni1—O1W2.073 (3)C6—C71.392 (4)
Ni1—O4ii2.133 (2)C6—C81.503 (4)
Ni1—O3ii2.157 (2)C7—H70.9300
Ni1—C8ii2.456 (3)C8—Ni1iv2.456 (3)
N1—C111.315 (4)C9—C101.345 (5)
N1—C91.354 (4)C9—H90.9300
N2—C111.339 (4)C10—H100.9300
N2—C101.361 (5)C11—H110.9300
N2—C121.478 (4)C12—C131.508 (5)
N3—C201.341 (4)C12—H12A0.9700
N3—C221.360 (5)C12—H12B0.9700
N3—C191.466 (5)C13—C181.383 (6)
N4—C201.314 (4)C13—C141.392 (6)
N4—C211.368 (5)C14—C151.393 (6)
N4—Ni1iii2.057 (3)C14—H140.9300
O1—C11.260 (4)C15—C161.357 (6)
O2—C11.237 (4)C15—H150.9300
O3—C81.264 (4)C16—C171.368 (6)
O3—Ni1iv2.157 (2)C16—H160.9300
O4—C81.255 (4)C17—C181.395 (5)
O4—Ni1iv2.133 (2)C17—H170.9300
O1W—H1WA0.80 (5)C18—C191.507 (6)
O1W—H1WB0.82 (4)C19—H19A0.9700
Br1—C41.897 (3)C19—H19B0.9700
C1—C21.512 (5)C20—H200.9300
C2—C31.394 (4)C21—C221.353 (5)
C2—C71.396 (4)C21—H210.9300
C3—C41.377 (5)C22—H220.9300
C3—H30.9300
O1—Ni1—N4i88.51 (11)C6—C7—C2120.1 (3)
O1—Ni1—N190.67 (10)C6—C7—H7119.9
N4i—Ni1—N1178.90 (11)C2—C7—H7119.9
O1—Ni1—O1W95.91 (11)O4—C8—O3121.2 (3)
N4i—Ni1—O1W87.85 (12)O4—C8—C6118.9 (3)
N1—Ni1—O1W91.50 (11)O3—C8—C6119.8 (3)
O1—Ni1—O4ii100.66 (9)O4—C8—Ni1iv60.26 (16)
N4i—Ni1—O4ii90.21 (10)O3—C8—Ni1iv61.33 (16)
N1—Ni1—O4ii90.66 (10)C6—C8—Ni1iv170.6 (2)
O1W—Ni1—O4ii163.26 (11)C10—C9—N1110.4 (3)
O1—Ni1—O3ii162.21 (9)C10—C9—H9124.8
N4i—Ni1—O3ii91.35 (10)N1—C9—H9124.8
N1—Ni1—O3ii89.66 (10)C9—C10—N2106.4 (3)
O1W—Ni1—O3ii101.87 (10)C9—C10—H10126.8
O4ii—Ni1—O3ii61.55 (9)N2—C10—H10126.8
O1—Ni1—C8ii131.29 (10)N1—C11—N2112.2 (3)
N4i—Ni1—C8ii93.07 (11)N1—C11—H11123.9
N1—Ni1—C8ii88.03 (11)N2—C11—H11123.9
O1W—Ni1—C8ii132.80 (12)N2—C12—C13112.5 (3)
O4ii—Ni1—C8ii30.73 (9)N2—C12—H12A109.1
O3ii—Ni1—C8ii30.95 (9)C13—C12—H12A109.1
C11—N1—C9104.8 (3)N2—C12—H12B109.1
C11—N1—Ni1127.0 (2)C13—C12—H12B109.1
C9—N1—Ni1128.2 (2)H12A—C12—H12B107.8
C11—N2—C10106.2 (3)C18—C13—C14120.0 (4)
C11—N2—C12126.8 (3)C18—C13—C12122.4 (4)
C10—N2—C12126.9 (3)C14—C13—C12117.6 (4)
C20—N3—C22106.9 (3)C15—C14—C13120.7 (5)
C20—N3—C19127.8 (3)C15—C14—H14119.7
C22—N3—C19125.2 (3)C13—C14—H14119.7
C20—N4—C21105.2 (3)C16—C15—C14119.0 (4)
C20—N4—Ni1iii125.5 (3)C16—C15—H15120.5
C21—N4—Ni1iii128.8 (3)C14—C15—H15120.5
C1—O1—Ni1124.9 (2)C15—C16—C17120.9 (3)
C8—O3—Ni1iv87.72 (19)C15—C16—H16119.6
C8—O4—Ni1iv89.01 (19)C17—C16—H16119.6
Ni1—O1W—H1WA99 (3)C16—C17—C18121.5 (3)
Ni1—O1W—H1WB120 (3)C16—C17—H17119.3
H1WA—O1W—H1WB104 (4)C18—C17—H17119.2
O2—C1—O1126.4 (3)C13—C18—C17118.0 (4)
O2—C1—C2117.8 (3)C13—C18—C19122.7 (4)
O1—C1—C2115.9 (3)C17—C18—C19119.3 (4)
C3—C2—C7119.6 (3)N3—C19—C18112.9 (3)
C3—C2—C1120.7 (3)N3—C19—H19A109.0
C7—C2—C1119.8 (3)C18—C19—H19A109.0
C4—C3—C2119.3 (3)N3—C19—H19B109.0
C4—C3—H3120.3C18—C19—H19B109.0
C2—C3—H3120.3H19A—C19—H19B107.8
C3—C4—C5122.1 (3)N4—C20—N3111.8 (3)
C3—C4—Br1118.7 (2)N4—C20—H20124.1
C5—C4—Br1119.3 (3)N3—C20—H20124.1
C4—C5—C6118.7 (3)C22—C21—N4109.7 (4)
C4—C5—H5120.7C22—C21—H21125.1
C6—C5—H5120.7N4—C21—H21125.1
C7—C6—C5120.2 (3)C21—C22—N3106.4 (4)
C7—C6—C8120.3 (3)C21—C22—H22126.8
C5—C6—C8119.5 (3)N3—C22—H22126.8
O1—Ni1—N1—C11−131.0 (3)C7—C6—C8—O3−2.7 (5)
N4i—Ni1—N1—C11−173 (47)C5—C6—C8—O3179.9 (3)
O1W—Ni1—N1—C11133.1 (3)C7—C6—C8—Ni1iv91.6 (15)
O4ii—Ni1—N1—C11−30.3 (3)C5—C6—C8—Ni1iv−85.7 (15)
O3ii—Ni1—N1—C1131.2 (3)C11—N1—C9—C10−0.5 (5)
C8ii—Ni1—N1—C110.3 (3)Ni1—N1—C9—C10−179.1 (3)
O1—Ni1—N1—C947.3 (3)N1—C9—C10—N20.4 (5)
N4i—Ni1—N1—C95(6)C11—N2—C10—C9−0.1 (5)
O1W—Ni1—N1—C9−48.6 (3)C12—N2—C10—C9−175.4 (4)
O4ii—Ni1—N1—C9148.0 (3)C9—N1—C11—N20.5 (4)
O3ii—Ni1—N1—C9−150.5 (3)Ni1—N1—C11—N2179.1 (2)
C8ii—Ni1—N1—C9178.6 (3)C10—N2—C11—N1−0.2 (4)
N4i—Ni1—O1—C173.7 (3)C12—N2—C11—N1175.1 (3)
N1—Ni1—O1—C1−105.6 (3)C11—N2—C12—C1329.1 (5)
O1W—Ni1—O1—C1−14.0 (3)C10—N2—C12—C13−156.5 (4)
O4ii—Ni1—O1—C1163.6 (3)N2—C12—C13—C18−91.9 (4)
O3ii—Ni1—O1—C1163.4 (3)N2—C12—C13—C1488.7 (4)
C8ii—Ni1—O1—C1166.5 (3)C18—C13—C14—C151.1 (6)
Ni1—O1—C1—O214.5 (5)C12—C13—C14—C15−179.5 (3)
Ni1—O1—C1—C2−164.5 (2)C13—C14—C15—C16−2.1 (6)
O2—C1—C2—C3179.4 (3)C14—C15—C16—C171.2 (5)
O1—C1—C2—C3−1.5 (5)C15—C16—C17—C180.6 (3)
O2—C1—C2—C70.5 (5)C14—C13—C18—C170.7 (5)
O1—C1—C2—C7179.6 (3)C12—C13—C18—C17−178.7 (3)
C7—C2—C3—C40.9 (5)C14—C13—C18—C19−178.9 (3)
C1—C2—C3—C4−178.0 (3)C12—C13—C18—C191.7 (5)
C2—C3—C4—C5−0.6 (5)C16—C17—C18—C13−1.6 (4)
C2—C3—C4—Br1177.9 (3)C16—C17—C18—C19178.0 (2)
C3—C4—C5—C60.1 (6)C20—N3—C19—C1820.2 (6)
Br1—C4—C5—C6−178.4 (3)C22—N3—C19—C18−163.9 (4)
C4—C5—C6—C70.0 (5)C13—C18—C19—N3−94.0 (5)
C4—C5—C6—C8177.3 (3)C17—C18—C19—N386.4 (4)
C5—C6—C7—C20.4 (5)C21—N4—C20—N30.6 (4)
C8—C6—C7—C2−177.0 (3)Ni1iii—N4—C20—N3−172.4 (2)
C3—C2—C7—C6−0.8 (5)C22—N3—C20—N4−0.1 (4)
C1—C2—C7—C6178.1 (3)C19—N3—C20—N4176.4 (4)
Ni1iv—O4—C8—O37.4 (3)C20—N4—C21—C22−0.9 (4)
Ni1iv—O4—C8—C6−169.3 (3)Ni1iii—N4—C21—C22171.8 (3)
Ni1iv—O3—C8—O4−7.4 (3)N4—C21—C22—N30.8 (5)
Ni1iv—O3—C8—C6169.3 (3)C20—N3—C22—C21−0.5 (4)
C7—C6—C8—O4174.1 (3)C19—N3—C22—C21−177.1 (4)
C5—C6—C8—O4−3.3 (5)
Symmetry codes: (i) x−1, y+1, z; (ii) x, y−1, z; (iii) x+1, y−1, z; (iv) x, y+1, z.
Acknowledgements top

This work was supported by the National Natural Science Foundation of China (No. 20731004), the Natural Science Foundation for Outstanding Scholars of Anhui Province, China (grant No. 044-J-04011) and the Natural Science Foundation of Education Commission of Anhui Province, China (No. KJ2008B004).

references
References top

Bruker (1997). SMART, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.

Hu, T.-L., Zou, R.-Q., Li, J.-R. & Bu, X.-H. (2008). Dalton Trans. pp. 1302–1311.

Liu, G.-X., Huang, R.-Y., Xu, H., Kong, X.-J., Huang, L.-F., Zhu, K. & Ren, X.-M. (2008). Polyhedron, 27, 2327–2336.

Liu, G.-X., Zhu, K., Chen, H., Huang, R.-Y., Xu, H. & Ren, X.-M. (2009). Inorg. Chim. Acta, 362, 1605–1670

Qi, Y., Chi, Y. X. & Zheng, J. M. (2008). Cryst. Growth Des. 8, 606–611.

Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122.