metal-organic compounds
Bis{4-bromo-2-[(2-hydroxyethyl)iminomethyl]phenolato}nickel(II) monohydrate
aDepartment of Chemistry, Huzhou University, Huzhou 313000, People's Republic of China, and bCollege of Chemical Engineering, Nanjing Forestry University, Nangjing 210037, People's Republic of China
*Correspondence e-mail: chenyi_wang@163.com
The title mononuclear nickel complex, [Ni(C9H9BrNO2)2]·H2O, was obtained by the reaction of 5-bromosalicylaldehyde, 2-aminoethanol and nickel nitrate in methanol. The NiII atom is six-coordinated by two phenolate O, two imine N and two hydroxy O atoms from two crystallographically different Schiff base ligands, forming an octahedral geometry. In the crystal, molecules are linked by intermolecular O—H⋯O and O—H⋯Br hydrogen bonds, forming a three-dimensional network.
Related literature
For urease inhibitors, see: Wang (2009); Wang & Ye (2011). For related nickel(II) complexes, see: Arıcı et al. (2005); Liu et al. (2006); Li & Wang (2007); Ali et al. (2006).
Experimental
Crystal data
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Data collection: SMART (Bruker, 1998); cell SAINT (Bruker, 1998); 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: SHELXTL.
Supporting information
10.1107/S1600536811031771/ci5196sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811031771/ci5196Isup2.hkl
5-Bromosalicylaldehyde (1.0 mmol, 0.201 g), 2-aminoethanol (1.0 mmol, 0.061 g), and nickel nitrate hexahydrate (0.5 mmol, 0.146 g) were dissolved in MeOH (30 ml). The mixture was stirred at room temperature for 10 min to give a clear green solution. After keeping the solution in air for a week, green block-shaped crystals were formed at the bottom of the vessel.
The water H atoms were located in a difference Fourier map and refined isotropically, with O–H and H···H distances restrained to 0.85 (1) and 1.37 (2) Å, respectively. The remaining H atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms, with C–H distances in the range 0.93–0.97 Å, O—H distance of 0.93 Å, and with Uiso(H) set at 1.2Ueq(C and O).
Data collection: SMART (Bruker, 1998); cell
SAINT (Bruker, 1998); data reduction: SAINT (Bruker, 1998); 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).[Ni(C9H9BrNO2)2]·H2O | F(000) = 1120 |
Mr = 562.89 | Dx = 1.823 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 2063 reflections |
a = 9.835 (3) Å | θ = 2.5–25.3° |
b = 12.851 (2) Å | µ = 4.87 mm−1 |
c = 16.226 (3) Å | T = 298 K |
V = 2050.8 (8) Å3 | BlocK, green |
Z = 4 | 0.21 × 0.20 × 0.20 mm |
Bruker SMART CCD area-detector diffractometer | 4474 independent reflections |
Radiation source: fine-focus sealed tube | 2310 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.099 |
ω scans | θmax = 27.0°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −12→12 |
Tmin = 0.428, Tmax = 0.442 | k = −16→16 |
13318 measured reflections | l = −20→15 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.048 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.128 | w = 1/[σ2(Fo2) + (0.0374P)2 + 1.9512P] where P = (Fo2 + 2Fc2)/3 |
S = 1.02 | (Δ/σ)max = 0.001 |
4474 reflections | Δρmax = 0.60 e Å−3 |
259 parameters | Δρmin = −0.95 e Å−3 |
3 restraints | Absolute structure: Flack (1983), 1930 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.013 (19) |
[Ni(C9H9BrNO2)2]·H2O | V = 2050.8 (8) Å3 |
Mr = 562.89 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 9.835 (3) Å | µ = 4.87 mm−1 |
b = 12.851 (2) Å | T = 298 K |
c = 16.226 (3) Å | 0.21 × 0.20 × 0.20 mm |
Bruker SMART CCD area-detector diffractometer | 4474 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2310 reflections with I > 2σ(I) |
Tmin = 0.428, Tmax = 0.442 | Rint = 0.099 |
13318 measured reflections |
R[F2 > 2σ(F2)] = 0.048 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.128 | Δρmax = 0.60 e Å−3 |
S = 1.02 | Δρmin = −0.95 e Å−3 |
4474 reflections | Absolute structure: Flack (1983), 1930 Friedel pairs |
259 parameters | Absolute structure parameter: 0.013 (19) |
3 restraints |
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 | ||
Br1 | 1.08191 (9) | −0.02277 (7) | 0.25079 (7) | 0.0550 (3) | |
Br2 | 0.5363 (2) | 0.81053 (8) | 0.47258 (10) | 0.1150 (7) | |
Ni1 | 0.45998 (10) | 0.24321 (8) | 0.40117 (7) | 0.0323 (3) | |
O1 | 0.6019 (5) | 0.2555 (4) | 0.3127 (4) | 0.0425 (15) | |
O2 | 0.3198 (5) | 0.2157 (4) | 0.4990 (3) | 0.0364 (16) | |
H2A | 0.2280 | 0.2329 | 0.4989 | 0.044* | |
O3 | 0.5614 (6) | 0.3443 (4) | 0.4733 (4) | 0.0366 (15) | |
O4 | 0.3367 (6) | 0.1508 (4) | 0.3188 (4) | 0.0451 (17) | |
H4A | 0.3131 | 0.0812 | 0.3251 | 0.054* | |
O5 | 0.5810 (10) | 0.4431 (5) | 0.2144 (5) | 0.074 (2) | |
N1 | 0.5494 (7) | 0.1225 (5) | 0.4536 (4) | 0.0307 (17) | |
N2 | 0.3496 (7) | 0.3550 (5) | 0.3502 (5) | 0.0371 (19) | |
C1 | 0.7389 (8) | 0.1086 (6) | 0.3572 (5) | 0.029 (2) | |
C2 | 0.7047 (8) | 0.1925 (6) | 0.3039 (5) | 0.032 (2) | |
C3 | 0.7945 (8) | 0.2085 (6) | 0.2369 (6) | 0.040 (2) | |
H3 | 0.7772 | 0.2640 | 0.2016 | 0.048* | |
C4 | 0.9041 (9) | 0.1480 (7) | 0.2209 (6) | 0.042 (2) | |
H4 | 0.9582 | 0.1617 | 0.1752 | 0.051* | |
C5 | 0.9358 (9) | 0.0658 (7) | 0.2726 (6) | 0.042 (2) | |
C6 | 0.8539 (8) | 0.0483 (6) | 0.3384 (6) | 0.038 (2) | |
H6 | 0.8751 | −0.0070 | 0.3732 | 0.046* | |
C7 | 0.6629 (8) | 0.0814 (6) | 0.4292 (5) | 0.028 (2) | |
H7 | 0.6986 | 0.0286 | 0.4620 | 0.033* | |
C8 | 0.4827 (8) | 0.0827 (6) | 0.5276 (5) | 0.040 (2) | |
H8A | 0.5507 | 0.0620 | 0.5676 | 0.047* | |
H8B | 0.4287 | 0.0220 | 0.5138 | 0.047* | |
C9 | 0.3914 (9) | 0.1664 (7) | 0.5646 (6) | 0.045 (3) | |
H9A | 0.3276 | 0.1353 | 0.6030 | 0.054* | |
H9B | 0.4458 | 0.2171 | 0.5941 | 0.054* | |
C10 | 0.4558 (9) | 0.5003 (6) | 0.4176 (5) | 0.041 (2) | |
C11 | 0.5478 (8) | 0.4458 (6) | 0.4704 (5) | 0.033 (2) | |
C12 | 0.6275 (8) | 0.5055 (6) | 0.5233 (6) | 0.045 (2) | |
H12 | 0.6845 | 0.4714 | 0.5602 | 0.055* | |
C13 | 0.6258 (10) | 0.6126 (7) | 0.5234 (6) | 0.051 (3) | |
H13 | 0.6819 | 0.6502 | 0.5586 | 0.061* | |
C14 | 0.5408 (13) | 0.6614 (7) | 0.4712 (7) | 0.060 (3) | |
C15 | 0.4569 (12) | 0.6097 (7) | 0.4200 (7) | 0.062 (3) | |
H15 | 0.3987 | 0.6469 | 0.3857 | 0.075* | |
C16 | 0.3650 (8) | 0.4525 (6) | 0.3608 (6) | 0.041 (2) | |
H16 | 0.3121 | 0.4964 | 0.3285 | 0.049* | |
C17 | 0.2488 (9) | 0.3159 (7) | 0.2904 (6) | 0.051 (3) | |
H17A | 0.2340 | 0.3675 | 0.2477 | 0.061* | |
H17B | 0.1628 | 0.3033 | 0.3180 | 0.061* | |
C18 | 0.2992 (9) | 0.2178 (6) | 0.2530 (7) | 0.051 (3) | |
H18A | 0.2286 | 0.1858 | 0.2198 | 0.062* | |
H18B | 0.3771 | 0.2316 | 0.2180 | 0.062* | |
H5A | 0.584 (12) | 0.395 (5) | 0.178 (4) | 0.080* | |
H5B | 0.605 (11) | 0.415 (6) | 0.260 (3) | 0.080* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br1 | 0.0343 (4) | 0.0641 (6) | 0.0666 (7) | 0.0118 (5) | 0.0052 (6) | −0.0190 (6) |
Br2 | 0.2030 (18) | 0.0286 (5) | 0.1133 (12) | 0.0049 (9) | −0.0640 (13) | −0.0095 (7) |
Ni1 | 0.0245 (5) | 0.0278 (5) | 0.0446 (7) | 0.0024 (5) | 0.0003 (5) | 0.0031 (5) |
O1 | 0.032 (3) | 0.036 (3) | 0.059 (4) | 0.013 (3) | 0.003 (3) | 0.011 (3) |
O2 | 0.026 (3) | 0.038 (4) | 0.045 (4) | 0.015 (3) | −0.003 (3) | 0.004 (3) |
O3 | 0.030 (4) | 0.032 (3) | 0.048 (4) | 0.001 (3) | −0.006 (3) | 0.009 (3) |
O4 | 0.051 (4) | 0.035 (3) | 0.050 (5) | −0.003 (3) | −0.012 (4) | 0.001 (3) |
O5 | 0.076 (5) | 0.062 (4) | 0.083 (6) | −0.010 (5) | 0.002 (5) | 0.017 (4) |
N1 | 0.031 (4) | 0.025 (3) | 0.036 (5) | −0.005 (3) | 0.008 (4) | 0.000 (3) |
N2 | 0.027 (4) | 0.034 (4) | 0.050 (5) | −0.005 (3) | −0.002 (4) | −0.005 (4) |
C1 | 0.026 (5) | 0.031 (5) | 0.029 (6) | 0.008 (4) | 0.001 (4) | −0.012 (4) |
C2 | 0.030 (5) | 0.024 (4) | 0.041 (6) | 0.000 (4) | −0.006 (5) | −0.002 (4) |
C3 | 0.043 (5) | 0.034 (5) | 0.044 (7) | −0.002 (4) | 0.000 (5) | 0.004 (5) |
C4 | 0.029 (5) | 0.060 (6) | 0.037 (6) | −0.011 (5) | 0.013 (4) | −0.006 (5) |
C5 | 0.034 (5) | 0.045 (5) | 0.046 (7) | −0.007 (4) | 0.001 (5) | −0.022 (5) |
C6 | 0.027 (5) | 0.033 (5) | 0.055 (7) | 0.006 (4) | 0.007 (5) | −0.012 (5) |
C7 | 0.026 (5) | 0.019 (4) | 0.038 (6) | 0.007 (3) | −0.005 (4) | −0.006 (4) |
C8 | 0.036 (5) | 0.043 (5) | 0.039 (6) | 0.001 (4) | 0.002 (5) | 0.012 (5) |
C9 | 0.031 (5) | 0.058 (6) | 0.045 (7) | 0.013 (4) | 0.007 (5) | −0.008 (5) |
C10 | 0.043 (5) | 0.034 (4) | 0.048 (6) | 0.004 (4) | −0.008 (5) | 0.000 (4) |
C11 | 0.027 (5) | 0.035 (5) | 0.036 (6) | −0.001 (4) | −0.008 (5) | 0.001 (4) |
C12 | 0.046 (6) | 0.038 (5) | 0.052 (7) | 0.007 (4) | −0.009 (5) | −0.001 (5) |
C13 | 0.057 (7) | 0.037 (5) | 0.059 (8) | −0.001 (5) | −0.009 (6) | −0.016 (5) |
C14 | 0.080 (8) | 0.031 (5) | 0.067 (8) | −0.001 (6) | −0.008 (8) | 0.001 (5) |
C15 | 0.077 (7) | 0.037 (5) | 0.073 (8) | 0.013 (6) | −0.018 (7) | −0.004 (5) |
C16 | 0.036 (5) | 0.029 (5) | 0.057 (7) | 0.004 (4) | −0.018 (5) | 0.002 (5) |
C17 | 0.040 (6) | 0.040 (5) | 0.072 (8) | 0.012 (5) | −0.008 (5) | 0.011 (5) |
C18 | 0.048 (5) | 0.053 (6) | 0.053 (7) | −0.002 (4) | −0.020 (6) | 0.000 (6) |
Ni1—N1 | 1.976 (7) | C4—C5 | 1.385 (12) |
Ni1—N2 | 1.981 (7) | C4—H4 | 0.93 |
Ni1—O1 | 2.008 (6) | C5—C6 | 1.356 (11) |
Ni1—O3 | 2.014 (6) | C6—H6 | 0.93 |
Ni1—O2 | 2.132 (5) | C7—H7 | 0.93 |
Ni1—O4 | 2.160 (6) | C8—C9 | 1.523 (11) |
Br1—C5 | 1.867 (9) | C8—H8A | 0.97 |
Br2—C14 | 1.917 (8) | C8—H8B | 0.97 |
O1—C2 | 1.303 (9) | C9—H9A | 0.97 |
O2—C9 | 1.424 (10) | C9—H9B | 0.97 |
O2—H2A | 0.9298 | C10—C15 | 1.407 (12) |
O3—C11 | 1.312 (8) | C10—C16 | 1.423 (11) |
O4—C18 | 1.420 (10) | C10—C11 | 1.430 (11) |
O4—H4A | 0.9298 | C11—C12 | 1.392 (11) |
O5—H5A | 0.853 (10) | C12—C13 | 1.377 (11) |
O5—H5B | 0.854 (10) | C12—H12 | 0.93 |
N1—C7 | 1.297 (10) | C13—C14 | 1.346 (13) |
N1—C8 | 1.461 (10) | C13—H13 | 0.93 |
N2—C16 | 1.274 (10) | C14—C15 | 1.346 (14) |
N2—C17 | 1.476 (11) | C15—H15 | 0.93 |
C1—C6 | 1.405 (10) | C16—H16 | 0.93 |
C1—C2 | 1.422 (11) | C17—C18 | 1.485 (12) |
C1—C7 | 1.431 (11) | C17—H17A | 0.97 |
C2—C3 | 1.416 (12) | C17—H17B | 0.97 |
C3—C4 | 1.354 (11) | C18—H18A | 0.97 |
C3—H3 | 0.93 | C18—H18B | 0.97 |
N1—Ni1—N2 | 173.1 (3) | N1—C7—C1 | 126.8 (8) |
N1—Ni1—O1 | 93.4 (2) | N1—C7—H7 | 116.6 |
N2—Ni1—O1 | 91.5 (3) | C1—C7—H7 | 116.6 |
N1—Ni1—O3 | 92.1 (2) | N1—C8—C9 | 110.0 (7) |
N2—Ni1—O3 | 92.6 (2) | N1—C8—H8A | 109.7 |
O1—Ni1—O3 | 91.2 (2) | C9—C8—H8A | 109.7 |
N1—Ni1—O2 | 80.6 (2) | N1—C8—H8B | 109.7 |
N2—Ni1—O2 | 94.4 (3) | C9—C8—H8B | 109.7 |
O1—Ni1—O2 | 174.0 (2) | H8A—C8—H8B | 108.2 |
O3—Ni1—O2 | 89.7 (2) | O2—C9—C8 | 108.1 (7) |
N1—Ni1—O4 | 94.8 (2) | O2—C9—H9A | 110.1 |
N2—Ni1—O4 | 80.4 (3) | C8—C9—H9A | 110.1 |
O1—Ni1—O4 | 89.5 (2) | O2—C9—H9B | 110.1 |
O3—Ni1—O4 | 173.0 (2) | C8—C9—H9B | 110.1 |
O2—Ni1—O4 | 90.4 (2) | H9A—C9—H9B | 108.4 |
C2—O1—Ni1 | 124.7 (5) | C15—C10—C16 | 117.0 (8) |
C9—O2—Ni1 | 108.1 (5) | C15—C10—C11 | 117.9 (8) |
C9—O2—H2A | 126.0 | C16—C10—C11 | 125.0 (7) |
Ni1—O2—H2A | 125.9 | O3—C11—C12 | 117.9 (7) |
C11—O3—Ni1 | 124.8 (5) | O3—C11—C10 | 125.0 (7) |
C18—O4—Ni1 | 106.1 (5) | C12—C11—C10 | 117.1 (7) |
C18—O4—H4A | 126.9 | C13—C12—C11 | 123.0 (8) |
Ni1—O4—H4A | 126.9 | C13—C12—H12 | 118.5 |
H5A—O5—H5B | 106 (3) | C11—C12—H12 | 118.5 |
C7—N1—C8 | 119.7 (7) | C14—C13—C12 | 118.2 (9) |
C7—N1—Ni1 | 124.9 (6) | C14—C13—H13 | 120.9 |
C8—N1—Ni1 | 115.4 (5) | C12—C13—H13 | 120.9 |
C16—N2—C17 | 120.2 (8) | C13—C14—C15 | 122.6 (9) |
C16—N2—Ni1 | 126.3 (6) | C13—C14—Br2 | 118.3 (8) |
C17—N2—Ni1 | 113.3 (5) | C15—C14—Br2 | 119.1 (8) |
C6—C1—C2 | 118.5 (8) | C14—C15—C10 | 121.0 (9) |
C6—C1—C7 | 117.5 (8) | C14—C15—H15 | 119.5 |
C2—C1—C7 | 123.9 (7) | C10—C15—H15 | 119.5 |
O1—C2—C3 | 118.5 (7) | N2—C16—C10 | 125.9 (8) |
O1—C2—C1 | 126.0 (8) | N2—C16—H16 | 117.0 |
C3—C2—C1 | 115.4 (7) | C10—C16—H16 | 117.0 |
C4—C3—C2 | 124.0 (8) | N2—C17—C18 | 109.5 (7) |
C4—C3—H3 | 118.0 | N2—C17—H17A | 109.8 |
C2—C3—H3 | 118.0 | C18—C17—H17A | 109.8 |
C3—C4—C5 | 120.1 (9) | N2—C17—H17B | 109.8 |
C3—C4—H4 | 119.9 | C18—C17—H17B | 109.8 |
C5—C4—H4 | 119.9 | H17A—C17—H17B | 108.2 |
C6—C5—C4 | 118.0 (8) | O4—C18—C17 | 107.1 (8) |
C6—C5—Br1 | 120.3 (7) | O4—C18—H18A | 110.3 |
C4—C5—Br1 | 121.6 (7) | C17—C18—H18A | 110.3 |
C5—C6—C1 | 123.8 (9) | O4—C18—H18B | 110.3 |
C5—C6—H6 | 118.1 | C17—C18—H18B | 110.3 |
C1—C6—H6 | 118.1 | H18A—C18—H18B | 108.6 |
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H5B···O1 | 0.85 (1) | 2.22 (7) | 2.898 (8) | 136 (8) |
O5—H5A···Br2i | 0.85 (1) | 2.92 (5) | 3.666 (9) | 146 (8) |
O4—H4A···Br1ii | 0.93 | 2.90 | 3.532 (6) | 126 |
O4—H4A···O5i | 0.93 | 2.16 | 2.841 (9) | 130 |
O2—H2A···O3iii | 0.93 | 1.97 | 2.694 (7) | 133 |
Symmetry codes: (i) −x+1, y−1/2, −z+1/2; (ii) x−1, y, z; (iii) x−1/2, −y+1/2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | [Ni(C9H9BrNO2)2]·H2O |
Mr | 562.89 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 298 |
a, b, c (Å) | 9.835 (3), 12.851 (2), 16.226 (3) |
V (Å3) | 2050.8 (8) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 4.87 |
Crystal size (mm) | 0.21 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.428, 0.442 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 13318, 4474, 2310 |
Rint | 0.099 |
(sin θ/λ)max (Å−1) | 0.639 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.048, 0.128, 1.02 |
No. of reflections | 4474 |
No. of parameters | 259 |
No. of restraints | 3 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.60, −0.95 |
Absolute structure | Flack (1983), 1930 Friedel pairs |
Absolute structure parameter | 0.013 (19) |
Computer programs: SMART (Bruker, 1998), SAINT (Bruker, 1998), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Ni1—N1 | 1.976 (7) | Ni1—O3 | 2.014 (6) |
Ni1—N2 | 1.981 (7) | Ni1—O2 | 2.132 (5) |
Ni1—O1 | 2.008 (6) | Ni1—O4 | 2.160 (6) |
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H5B···O1 | 0.85 (1) | 2.22 (7) | 2.898 (8) | 136 (8) |
O5—H5A···Br2i | 0.85 (1) | 2.92 (5) | 3.666 (9) | 146 (8) |
O4—H4A···Br1ii | 0.93 | 2.90 | 3.532 (6) | 126 |
O4—H4A···O5i | 0.93 | 2.16 | 2.841 (9) | 130 |
O2—H2A···O3iii | 0.93 | 1.97 | 2.694 (7) | 133 |
Symmetry codes: (i) −x+1, y−1/2, −z+1/2; (ii) x−1, y, z; (iii) x−1/2, −y+1/2, −z+1. |
Acknowledgements
This work was supported financially by the Natural Science Foundation of China (No. 31071856), the Natural Science Foundation of Zhejiang Province (No. Y407318) and the Applied Research Project on Nonprofit Technology of Zhejiang Province (No. 2010 C32060).
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As part of our investigations into novel urease inhibitors (Wang & Ye, 2011; Wang, 2009), we have synthesized the title compound, a new mononuclear nickel(II) complex, Fig. 1. The compound contains a mononuclear nickel(II) complex molecule and a water molecule of crystallization. The Ni atom in the complex is six-coordinated by two phenolate O, two imine N, and two hydroxy O atoms from two Schiff base ligands, forming an octahedral geometry. The trans angles at the Ni atom are in the range 173.1 (3)–174.0 (2)°; the other angles are close to 90°, ranging from 80.4 (3) to 94.8 (2)°, indicating a slightly distorted octahedral coordination. The Ni—O and Ni—N bond lengths (Table 1) are typical and are comparable to those observed in other similar nickel(II) complexes (Arıcı et al., 2005; Liu et al., 2006; Li & Wang, 2007; Ali et al., 2006).
In the crystal structure of the compound, molecules are linked through intermolecular O—H···O and O—H···Br hydrogen bonds (Table 2), to form a three-dimensional network (Fig. 2).