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Acta Cryst. (2008). E64, m548    [ doi:10.1107/S160053680800634X ]

Aquabis(4-methylbenzoato)-[kappa]O;[kappa]2O,O'-bis(pyridine-[kappa]N)nickel(II)

W.-D. Song, H. Wang and L.-L. Ji

Abstract top

In the title mononuclear complex, [Ni(C8H7O2)2(C5H5N)2(H2O)], the NiII atom is in a distorted octahedral arrangement, coordinated by three carboxylate O atoms from one bidentate 4-methylbenzoate ligand and one monodentate 4-methylbenzoate ligand, two N atoms from pyridine ligands, axially positioned, and a water molecule. The equatorially positioned water molecule and uncoordinated carboxylate O atom form an intramolecular hydrogen bond. An intermolecular O-H...O hydrogen bond between the coordinated water molecule and carboxylate O atom of the 4-methylbenzoate ligand forms infinite chains along the b axis. These chains are connected by C-H...[pi] interactions.

Comment top

In the structural investigation of 4-methylbenzoate complexes, it has been found that the 4-methylbenzoic acid functions as a multidentate ligand [Song et al. (2007)] with versatile binding and coordination modes. In this paper, we report the crystal structure of the title compound, (I), a new Ni complex obtained by the reaction of 4-methylbenzoic acid, pyridine and nickel chloride in alkaline aqueous solution.

The NiII atom exhibits a disordered octahedral environment (Fig. 1, Table 1) defined by three carboxyl O atoms from one bidentate 4-methylbenzoate ligand and one monodentate 4-methylbenzoate ligand, two N atoms from two pyridine ligands and a water molecule. The intermolecular O—H···O hydrogen bond (Table 2, Fig. 2) between the coordinated water molecule and carboxy O atom of 4-methylbenzoate ligand generates a chain along the axis b. The intermolecular hydrogen bond C1—H1···O also involves water molecule [3.339 (3) %A, 145%]. An intramolecular hydrogen bond connects the coordinated water molecule and uncoordinated oxygen atom O4 (Table 2). C—H···π interactions connect hydrogen bonded chains: C3– H3···Cg (C12→ C17, symmetry code: -2 - x, 1/2 + y, 2 - z) of 3.482 (2) %A; 132%, and C14– H14···Cg(C12→ C17, symmetry code: 1 - x, -1/2 + y, 2 - z) of 3.603 (2) %A; 134%; C22– H22···Cg(C20→ C25, symmetry code: 2 - x, -1/2 + y, 1 - z) of 3.504 (2) %A; 133%.

Related literature top

For related literature, see: Song et al. (2007).

Experimental top

A mixture of nickel chloride (1 mmol), 4-methylbenzoic acid (1 mmol), pyridine(1 mmol), NaOH (1.5 mmol) and H2O (12 ml) were placed into a 23 ml Teflon reactor, which was heated to 433 K for three days and then cooled to room temperature at a rate of 10 K h-1. The crystals obtained were washed with water and dryed in air.

Refinement top

Carbon-bound H atoms were placed at calculated positions and were treated as riding on the parent C atoms with C—H = 0.93 Å for aromatic rings, C—H = 0.96 Å for methyl group, and with Uiso(H) = 1.2 Ueq(C). Water H atoms were tentatively located in difference Fourier maps and were refined with distance restraints of O–H = 0.82 Å and H···H = 1.29 Å, each within a standard deviation of 0.01 Å; and with Uiso(H) = 1.5 Ueq(O).

Computing details top

Data collection: APEX2 (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: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: XP in SHELXTL (Sheldrick, 2008).

Figures top
[Figure 1] Fig. 1. The structure of (I) showing the atomic numbering scheme and octahedral coordination of NiII. Non-H atoms are shown with the 30% probability displacement ellipsoids.
[Figure 2] Fig. 2. The crystal packing of (I). The intermolecluar hydrogen bonds are shown as dashed lines.
Aquabis(4-methylbenzoato)-κO;κ2O,O'-bis(pyridine- κN)nickel(II) top
Crystal data top
[Ni(C8H7O2)2(C5H5N)2(H2O)]F000 = 528
Mr = 505.20Dx = 1.431 Mg m−3
Monoclinic, P21Mo Kα radiation
λ = 0.71073 Å
Hall symbol: P 2ybCell parameters from 4520 reflections
a = 13.61810 (10) Åθ = 1.4–28º
b = 5.95260 (10) ŵ = 0.87 mm−1
c = 15.1380 (2) ÅT = 296 (2) K
β = 107.2150 (10)ºBlock, blue
V = 1172.16 (3) Å30.26 × 0.23 × 0.20 mm
Z = 2
Data collection top
Bruker APEXII area-detector
diffractometer		5102 independent reflections
Radiation source: fine-focus sealed tube4798 reflections with I > 2σ(I)
Monochromator: graphiteRint = 0.023
T = 296(2) Kθmax = 27.5º
φ and ω scansθmin = 1.6º
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)		h = −17→17
Tmin = 0.806, Tmax = 0.846k = −7→7
11325 measured reflectionsl = −19→17
Refinement top
Refinement on F2Hydrogen site location: inferred from neighbouring sites
Least-squares matrix: fullH atoms treated by a mixture of
independent and constrained refinement
R[F2 > 2σ(F2)] = 0.028  w = 1/[σ2(Fo2) + (0.0307P)2 + 0.1736P]
where P = (Fo2 + 2Fc2)/3
wR(F2) = 0.065(Δ/σ)max = 0.001
S = 1.04Δρmax = 0.25 e Å−3
5102 reflectionsΔρmin = −0.28 e Å−3
315 parametersExtinction correction: none
4 restraintsAbsolute structure: Flack (1983)
Primary atom site location: structure-invariant direct methodsFlack parameter: 0.00
Secondary atom site location: difference Fourier map
Crystal data top
[Ni(C8H7O2)2(C5H5N)2(H2O)]V = 1172.16 (3) Å3
Mr = 505.20Z = 2
Monoclinic, P21Mo Kα
a = 13.61810 (10) ŵ = 0.87 mm−1
b = 5.95260 (10) ÅT = 296 (2) K
c = 15.1380 (2) Å0.26 × 0.23 × 0.20 mm
β = 107.2150 (10)º
Data collection top
Bruker APEXII area-detector
diffractometer		5102 independent reflections
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)		4798 reflections with I > 2σ(I)
Tmin = 0.806, Tmax = 0.846Rint = 0.023
11325 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.028H atoms treated by a mixture of
independent and constrained refinement
wR(F2) = 0.065Δρmax = 0.25 e Å−3
S = 1.04Δρmin = −0.28 e Å−3
5102 reflectionsAbsolute structure: Flack (1983)
315 parametersFlack parameter: 0.00
4 restraints
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
C10.95095 (15)0.1169 (4)0.82231 (15)0.0247 (4)
H10.91420.01080.78030.030*
C21.05343 (16)0.0757 (4)0.86802 (16)0.0296 (5)
H21.0845−0.05630.85710.036*
C31.10915 (16)0.2322 (4)0.92999 (16)0.0305 (5)
H31.17820.20830.96130.037*
C41.06002 (16)0.4243 (4)0.94418 (15)0.0292 (5)
H41.09540.53310.98550.035*
C50.95739 (16)0.4540 (4)0.89642 (15)0.0261 (5)
H50.92500.58470.90670.031*
C60.55162 (16)0.2440 (4)0.62678 (16)0.0272 (5)
H60.59030.11580.62590.033*
C70.45288 (17)0.2553 (4)0.56751 (17)0.0322 (5)
H70.42580.13670.52780.039*
C80.39535 (17)0.4435 (4)0.56807 (18)0.0352 (6)
H80.32860.45450.52880.042*
C90.43788 (17)0.6170 (4)0.62781 (17)0.0345 (5)
H90.40040.74680.62920.041*
C100.53759 (16)0.5937 (4)0.68568 (15)0.0273 (5)
H100.56610.71040.72600.033*
C110.69445 (14)0.1687 (3)0.88686 (14)0.0200 (4)
C120.66663 (15)0.0548 (4)0.96375 (14)0.0214 (4)
C130.62152 (14)−0.1580 (4)0.95154 (13)0.0227 (4)
H130.6066−0.22800.89410.027*
C140.59873 (15)−0.2661 (4)1.02416 (15)0.0257 (5)
H140.5669−0.40591.01430.031*
C150.62267 (15)−0.1690 (4)1.11155 (14)0.0263 (5)
C160.66774 (16)0.0436 (4)1.12359 (15)0.0289 (5)
H160.68430.11151.18150.035*
C170.68834 (16)0.1557 (4)1.05043 (15)0.0252 (4)
H170.71680.29901.05940.030*
C180.6011 (2)−0.2912 (5)1.19129 (17)0.0405 (6)
H18A0.6522−0.25151.24790.061*
H18B0.6030−0.45031.18160.061*
H18C0.5343−0.24941.19500.061*
C190.78596 (14)0.4041 (4)0.58580 (14)0.0216 (5)
C200.82429 (14)0.3106 (3)0.50984 (14)0.0209 (5)
C210.87038 (15)0.0988 (4)0.51907 (15)0.0237 (4)
H210.87470.01250.57130.028*
C220.90959 (16)0.0170 (4)0.45091 (15)0.0258 (5)
H220.9409−0.12350.45840.031*
C230.90311 (16)0.1405 (4)0.37128 (15)0.0285 (5)
C240.85529 (15)0.3503 (5)0.36190 (13)0.0294 (4)
H240.84910.43500.30890.035*
C250.81695 (16)0.4341 (4)0.43050 (15)0.0258 (5)
H250.78590.57480.42320.031*
C260.9479 (2)0.0517 (5)0.29837 (16)0.0423 (6)
H26A0.89730.06070.23890.063*
H26B0.9682−0.10200.31180.063*
H26C1.00680.13980.29800.063*
N10.90261 (12)0.3038 (3)0.83626 (12)0.0219 (4)
N20.59440 (12)0.4102 (3)0.68585 (12)0.0213 (4)
Ni10.748180 (17)0.36693 (5)0.764977 (16)0.01841 (7)
O10.69972 (10)0.0586 (2)0.81637 (9)0.0226 (3)
O20.71436 (10)0.3781 (4)0.89227 (9)0.0241 (3)
O30.78210 (11)0.2707 (2)0.64966 (10)0.0232 (3)
O40.76152 (12)0.6085 (3)0.58101 (10)0.0310 (4)
O1W0.78338 (11)0.6967 (2)0.75308 (10)0.0245 (3)
H2W0.7754 (18)0.715 (4)0.6978 (7)0.037*
H1W0.7470 (16)0.789 (3)0.7669 (14)0.037*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
C10.0227 (10)0.0198 (10)0.0305 (11)−0.0009 (9)0.0060 (9)−0.0009 (9)
C20.0248 (11)0.0261 (12)0.0374 (13)0.0035 (10)0.0083 (9)0.0022 (10)
C30.0191 (10)0.0396 (14)0.0307 (12)−0.0009 (10)0.0041 (9)0.0063 (11)
C40.0276 (10)0.0332 (15)0.0241 (11)−0.0077 (9)0.0036 (9)−0.0048 (9)
C50.0287 (11)0.0266 (11)0.0232 (11)0.0003 (9)0.0079 (9)−0.0019 (8)
C60.0235 (10)0.0251 (12)0.0319 (12)0.0003 (9)0.0066 (9)−0.0033 (10)
C70.0285 (12)0.0341 (13)0.0308 (13)−0.0050 (11)0.0038 (10)−0.0029 (10)
C80.0218 (10)0.0407 (14)0.0387 (14)−0.0009 (10)0.0021 (10)0.0098 (10)
C90.0245 (11)0.0316 (13)0.0466 (15)0.0077 (10)0.0092 (10)0.0048 (11)
C100.0279 (11)0.0249 (11)0.0293 (11)0.0008 (9)0.0087 (9)−0.0014 (9)
C110.0161 (9)0.0205 (11)0.0235 (10)0.0041 (8)0.0061 (8)0.0006 (8)
C120.0189 (9)0.0206 (11)0.0253 (10)0.0048 (8)0.0075 (8)0.0004 (9)
C130.0230 (8)0.0204 (12)0.0239 (9)0.0016 (9)0.0056 (7)−0.0027 (10)
C140.0229 (10)0.0232 (11)0.0316 (12)−0.0011 (9)0.0089 (9)−0.0001 (9)
C150.0252 (9)0.0285 (15)0.0271 (10)0.0042 (9)0.0108 (8)0.0047 (10)
C160.0294 (11)0.0341 (13)0.0224 (11)0.0022 (10)0.0067 (9)−0.0055 (10)
C170.0251 (10)0.0218 (11)0.0284 (11)0.0000 (9)0.0076 (9)−0.0040 (9)
C180.0501 (15)0.0426 (15)0.0337 (14)0.0007 (13)0.0202 (12)0.0064 (12)
C190.0159 (8)0.0243 (15)0.0230 (10)0.0013 (9)0.0032 (7)−0.0002 (9)
C200.0156 (8)0.0236 (12)0.0222 (10)−0.0017 (7)0.0037 (7)−0.0029 (8)
C210.0202 (9)0.0229 (11)0.0275 (11)0.0000 (9)0.0065 (8)0.0020 (9)
C220.0231 (10)0.0220 (11)0.0327 (12)0.0028 (9)0.0089 (9)−0.0038 (10)
C230.0258 (10)0.0332 (13)0.0272 (11)−0.0001 (9)0.0090 (9)−0.0065 (10)
C240.0350 (10)0.0332 (12)0.0216 (9)0.0018 (13)0.0106 (8)0.0035 (13)
C250.0258 (10)0.0223 (11)0.0290 (11)0.0034 (8)0.0076 (9)0.0018 (8)
C260.0485 (15)0.0510 (17)0.0313 (13)0.0134 (13)0.0177 (11)−0.0049 (13)
N10.0202 (8)0.0233 (10)0.0221 (8)−0.0003 (6)0.0061 (7)0.0014 (7)
N20.0198 (7)0.0215 (12)0.0228 (8)−0.0004 (7)0.0066 (6)−0.0004 (7)
Ni10.01837 (11)0.01668 (11)0.02025 (11)0.00073 (12)0.00583 (8)−0.00085 (14)
O10.0258 (7)0.0196 (7)0.0244 (7)0.0010 (6)0.0103 (6)−0.0028 (6)
O20.0285 (6)0.0193 (7)0.0264 (7)−0.0009 (9)0.0110 (5)−0.0020 (9)
O30.0260 (7)0.0231 (7)0.0221 (8)0.0015 (6)0.0097 (6)−0.0011 (6)
O40.0437 (9)0.0232 (8)0.0288 (8)0.0098 (7)0.0151 (7)0.0014 (7)
O1W0.0283 (7)0.0186 (8)0.0274 (8)0.0013 (6)0.0097 (6)−0.0031 (7)
Geometric parameters (Å, °) top
C1—N11.341 (3)C15—C181.511 (3)
C1—C21.384 (3)C16—C171.391 (3)
C1—H10.9300C16—H160.9300
C2—C31.379 (3)C17—H170.9300
C2—H20.9300C18—H18A0.9600
C3—C41.373 (3)C18—H18B0.9600
C3—H30.9300C18—H18C0.9600
C4—C51.382 (3)C19—O41.258 (3)
C4—H40.9300C19—O31.264 (3)
C5—N11.335 (3)C19—C201.503 (3)
C5—H50.9300C20—C251.386 (3)
C6—N21.345 (3)C20—C211.396 (3)
C6—C71.380 (3)C21—C221.383 (3)
C6—H60.9300C21—H210.9300
C7—C81.369 (3)C22—C231.393 (3)
C7—H70.9300C22—H220.9300
C8—C91.382 (4)C23—C241.396 (4)
C8—H80.9300C23—C261.506 (3)
C9—C101.388 (3)C24—C251.386 (3)
C9—H90.9300C24—H240.9300
C10—N21.338 (3)C25—H250.9300
C10—H100.9300C26—H26A0.9600
C11—O11.272 (2)C26—H26B0.9600
C11—O21.273 (3)C26—H26C0.9600
C11—C121.490 (3)N1—Ni12.0941 (17)
C12—C171.393 (3)N2—Ni12.0981 (16)
C12—C131.396 (3)Ni1—O32.0165 (14)
C13—C141.386 (3)Ni1—O1W2.0412 (15)
C13—H130.9300Ni1—O22.1107 (12)
C14—C151.391 (3)Ni1—O12.1710 (15)
C14—H140.9300O1W—H2W0.819 (9)
C15—C161.395 (3)O1W—H1W0.809 (9)
N1—C1—C2122.5 (2)H18B—C18—H18C109.5
N1—C1—H1118.7O4—C19—O3125.6 (2)
C2—C1—H1118.7O4—C19—C20117.39 (19)
C3—C2—C1119.4 (2)O3—C19—C20117.1 (2)
C3—C2—H2120.3C25—C20—C21118.70 (19)
C1—C2—H2120.3C25—C20—C19120.93 (19)
C4—C3—C2118.2 (2)C21—C20—C19120.35 (18)
C4—C3—H3120.9C22—C21—C20120.3 (2)
C2—C3—H3120.9C22—C21—H21119.8
C3—C4—C5119.3 (2)C20—C21—H21119.8
C3—C4—H4120.4C21—C22—C23121.3 (2)
C5—C4—H4120.4C21—C22—H22119.3
N1—C5—C4123.1 (2)C23—C22—H22119.3
N1—C5—H5118.5C22—C23—C24117.94 (19)
C4—C5—H5118.5C22—C23—C26120.9 (2)
N2—C6—C7122.9 (2)C24—C23—C26121.2 (2)
N2—C6—H6118.5C25—C24—C23120.9 (2)
C7—C6—H6118.5C25—C24—H24119.5
C8—C7—C6119.0 (2)C23—C24—H24119.5
C8—C7—H7120.5C20—C25—C24120.8 (2)
C6—C7—H7120.5C20—C25—H25119.6
C7—C8—C9119.1 (2)C24—C25—H25119.6
C7—C8—H8120.5C23—C26—H26A109.5
C9—C8—H8120.5C23—C26—H26B109.5
C8—C9—C10118.7 (2)H26A—C26—H26B109.5
C8—C9—H9120.6C23—C26—H26C109.5
C10—C9—H9120.6H26A—C26—H26C109.5
N2—C10—C9122.7 (2)H26B—C26—H26C109.5
N2—C10—H10118.7C5—N1—C1117.51 (18)
C9—C10—H10118.7C5—N1—Ni1120.29 (14)
O1—C11—O2119.64 (18)C1—N1—Ni1122.19 (14)
O1—C11—C12120.77 (18)C10—N2—C6117.56 (17)
O2—C11—C12119.58 (17)C10—N2—Ni1125.46 (14)
C17—C12—C13118.57 (19)C6—N2—Ni1116.87 (14)
C17—C12—C11120.52 (19)O3—Ni1—O1W94.41 (6)
C13—C12—C11120.87 (18)O3—Ni1—N186.71 (6)
C14—C13—C12120.61 (19)O1W—Ni1—N189.53 (6)
C14—C13—H13119.7O3—Ni1—N289.22 (6)
C12—C13—H13119.7O1W—Ni1—N292.99 (6)
C13—C14—C15121.1 (2)N1—Ni1—N2175.36 (7)
C13—C14—H14119.4O3—Ni1—O2165.26 (7)
C15—C14—H14119.4O1W—Ni1—O299.83 (8)
C14—C15—C16118.13 (19)N1—Ni1—O289.57 (6)
C14—C15—C18120.9 (2)N2—Ni1—O293.83 (6)
C16—C15—C18121.0 (2)O3—Ni1—O1104.00 (6)
C17—C16—C15121.1 (2)O1W—Ni1—O1161.59 (5)
C17—C16—H16119.5N1—Ni1—O191.67 (6)
C15—C16—H16119.5N2—Ni1—O187.17 (6)
C16—C17—C12120.4 (2)O2—Ni1—O161.82 (7)
C16—C17—H17119.8C11—O1—Ni187.92 (12)
C12—C17—H17119.8C11—O2—Ni190.59 (12)
C15—C18—H18A109.5C19—O3—Ni1123.76 (14)
C15—C18—H18B109.5Ni1—O1W—H2W104.8 (19)
H18A—C18—H18B109.5Ni1—O1W—H1W117.0 (18)
C15—C18—H18C109.5H2W—O1W—H1W105.6 (15)
H18A—C18—H18C109.5
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
O1W—H2W···O40.819 (9)1.834 (13)2.587 (2)152 (2)
O1W—H1W···O1i0.809 (9)1.957 (12)2.739 (2)162 (2)
Symmetry codes: (i) x, y+1, z.
Table 1
Selected geometric parameters (Å, °) top
N1—Ni12.0941 (17)Ni1—O1W2.0412 (15)
N2—Ni12.0981 (16)Ni1—O22.1107 (12)
Ni1—O32.0165 (14)Ni1—O12.1710 (15)
O3—Ni1—O1W94.41 (6)N1—Ni1—O289.57 (6)
O3—Ni1—N186.71 (6)N2—Ni1—O293.83 (6)
O1W—Ni1—N189.53 (6)O3—Ni1—O1104.00 (6)
O3—Ni1—N289.22 (6)O1W—Ni1—O1161.59 (5)
O1W—Ni1—N292.99 (6)N1—Ni1—O191.67 (6)
N1—Ni1—N2175.36 (7)N2—Ni1—O187.17 (6)
O3—Ni1—O2165.26 (7)O2—Ni1—O161.82 (7)
O1W—Ni1—O299.83 (8)
Table 2
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
O1W—H2W···O40.819 (9)1.834 (13)2.587 (2)152 (2)
O1W—H1W···O1i0.809 (9)1.957 (12)2.739 (2)162 (2)
Symmetry codes: (i) x, y+1, z.
Acknowledgements top

The authors acknowledge Guang Dong Ocean University for supporting this work.

references
References top

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