Poly[(μ2-4,4′-bipyridine-κ2N:N′)(μ2-2,2-dimeth­yl­cyclo­pentane-1,3-dicarboxyl­ato-κ4O1,O1′:O3,O3′)cadmium]

Zhang, X.-F.; Gao, S.; Ng, S.W.

doi:10.1107/S1600536811042656

metal-organic compounds

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ISSN: 2056-9890

Volume 67| Part 11| November 2011| Page m1593

doi:10.1107/S1600536811042656

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Poly[(μ₂-4,4′-bipyridine-κ²N:N′)(μ₂-2,2-dimethylcyclopentane-1,3-dicarboxylato-κ⁴O¹,O^1′:O³,O^3′)cadmium]

Xian-Fa Zhang,^a Shan Gao ^a and Seik Weng Ng ^b,^c ^*

^aKey Laboratory of Functional Inorganic Materials Chemistry, Ministry of Education, Heilongjiang University, Harbin 150080, People's Republic of China, ^bDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, and ^cChemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203 Jeddah, Saudi Arabia
^*Correspondence e-mail: seikweng@um.edu.my

(Received 7 October 2011; accepted 14 October 2011; online 22 October 2011)

In the title polymeric compound, [Cd(C₉H₁₂O₄)(C₁₀H₈N₂)]_n, the Cd^II atom is located on a twofold rotation axis and is coordinated by two 4,4′-bipyridine ligands and two 2,2-dimethylcyclopentane-1,3-dicarboxylate ions. The carboxylate ion and the N-heterocycle both function as bridges to link adjacent Cd^II atoms to result in the formation of a layer structure parallel to (010). The mid-point of the central C—C bond of the 4,4′-bipyridine ligand is located on an inversion center. In the crystal, the carboxylate ion is disordered over a twofold rotation axis in respect of its methyl group and the cyclopentane ring.

Related literature

For the synthesis of (1R,3S)-1,2,2-trimethylcyclopentane-1,3-dicarboxylic acid, see: Adhya et al. (1956 ); Camps & Jaime (1981 ).

Experimental

Crystal data

[Cd(C₉H₁₂O₄)(C₁₀H₈N₂)]
M_r = 452.77
Monoclinic, P 2/c
a = 9.8527 (5) Å
b = 7.2830 (4) Å
c = 14.6432 (9) Å
β = 100.879 (1)°
V = 1031.87 (10) Å³
Z = 2
Mo Kα radiation
μ = 1.08 mm⁻¹
T = 293 K
0.18 × 0.15 × 0.13 mm

Data collection

Rigaku R-AXIS RAPID IP diffractometer
Absorption correction: multi-scan (ABSCOR; Higashi, 1995 ) T_min = 0.829, T_max = 0.872
9640 measured reflections
2364 independent reflections
1774 reflections with I > 2σ(I)
R_int = 0.040

Refinement

R[F² > 2σ(F²)] = 0.054
wR(F²) = 0.171
S = 1.12
2364 reflections
150 parameters
51 restraints
H-atom parameters constrained
Δρ_max = 1.03 e Å⁻³
Δρ_min = −1.27 e Å⁻³

Table 1
Selected bond lengths (Å)

Cd1—N1	2.328 (5)
Cd1—O1	2.303 (5)
Cd1—O2	2.359 (5)

Data collection: RAPID-AUTO (Rigaku, 1998 ); cell refinement: RAPID-AUTO; data reduction: CrystalClear (Rigaku/MSC, 2002 ); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001 ); software used to prepare material for publication: publCIF (Westrip, 2010 ).

Supporting information

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536811042656/xu5349sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536811042656/xu5349Isup2.hkl

checkCIF report

Comment top

The compound is the racemic product resulting from the reaction of cadium(II) ions and the deprotonated, optically active (1R,3S)-1,2,2-trimethylcyclopentane-1,3-dicarboxylate ion. The 1-methyl group is cleaved under hydrothermal conditions to result in the formation of polymeric Cd(C₁₀H₈N₂)(C₉H₁₂O₄) (Scheme I), which is racemic. The carboxylate ion and the N-heterocycle both function as bridges to link adjacent six-coordinate Cd^II atoms to result in the formation of a layer structure (Fig. 1). Racemic 2,2-dimethylcyclopentane-1,3-dicarboxylic acid is not known in the chemical literature; (1R,3S)-,2,2-trimethylcyclopentane-1,3-dicarboxylic acid is known as apocamphoric acid; its synthesis involves several steps (Adhya et al., 1956; Camps & Jaime, 1981).

Related literature top

For the synthesis of (1R,3S)-1,2,2-trimethylcyclopentane-1,3-dicarboxylic acid, see: Adhya et al. (1956); Camps & Jaime (1981).

Experimental top

Cadmium nitrate (1 mmol), (+)-camphoric acid (1 mmol), 4,4'-bipyridine (1 mmol) and sodium hydroxide (2 mmol) were mixed in water (8 ml). The mixture was placed in a 23-ml, Teflon-lined, stainless-steel Parr bomb. This was heated at 413 K for 3 days. Colorless crystals were isolated when the bomb was cooled slowly to room temperature.

Computing details top

Data collection: RAPID-AUTO (Rigaku, 1998); cell refinement: RAPID-AUTO (Rigaku, 1998); data reduction: CrystalClear (Rigaku/MSC, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001); software used to prepare material for publication: publCIF (Westrip, 2010).

Figures top

Fig. 1. Thermal ellipsoid plot (Barbour, 2001) of a portion of polymeric Cd(C₁₀H₈N₂)(C₉H₁₂O₄) at the 50% probability level; hydrogen atoms are drawn as spheres of arbitrary radius. The carboxylate group is disordered over a twofold rotation axis.

Poly[(µ₂-4,4'-bipyridine-κ²N:N')(µ₂-2,2- dimethylcyclopentane-1,3-dicarboxylato- κ⁴O¹,O^1':O³,O^3')cadmium] top

Crystal data top

[Cd(C₉H₁₂O₄)(C₁₀H₈N₂)]	F(000) = 456
M_r = 452.77	D_x = 1.457 Mg m⁻³
Monoclinic, P2/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2yc	Cell parameters from 7550 reflections
a = 9.8527 (5) Å	θ = 3.1–27.4°
b = 7.2830 (4) Å	µ = 1.08 mm⁻¹
c = 14.6432 (9) Å	T = 293 K
β = 100.879 (1)°	Prism, colorless
V = 1031.87 (10) Å³	0.18 × 0.15 × 0.13 mm
Z = 2

Data collection top

Rigaku R-AXIS RAPID IP diffractometer	2364 independent reflections
Radiation source: fine-focus sealed tube	1774 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.040
ω scans	θ_max = 27.4°, θ_min = 3.1°
Absorption correction: multi-scan (ABSCOR; Higashi, 1995)	h = −12→12
T_min = 0.829, T_max = 0.872	k = −9→8
9640 measured reflections	l = −18→18

Refinement top

Refinement on F²	Primary atom site location: structure-invariant direct methods
Least-squares matrix: full	Secondary atom site location: difference Fourier map
R[F² > 2σ(F²)] = 0.054	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.171	H-atom parameters constrained
S = 1.12	w = 1/[σ²(F_o²) + (0.0794P)² + 2.2957P] where P = (F_o² + 2F_c²)/3
2364 reflections	(Δ/σ)_max = 0.001
150 parameters	Δρ_max = 1.03 e Å⁻³
51 restraints	Δρ_min = −1.27 e Å⁻³

Crystal data top

[Cd(C₉H₁₂O₄)(C₁₀H₈N₂)]	V = 1031.87 (10) Å³
M_r = 452.77	Z = 2
Monoclinic, P2/c	Mo Kα radiation
a = 9.8527 (5) Å	µ = 1.08 mm⁻¹
b = 7.2830 (4) Å	T = 293 K
c = 14.6432 (9) Å	0.18 × 0.15 × 0.13 mm
β = 100.879 (1)°

Data collection top

Rigaku R-AXIS RAPID IP diffractometer	2364 independent reflections
Absorption correction: multi-scan (ABSCOR; Higashi, 1995)	1774 reflections with I > 2σ(I)
T_min = 0.829, T_max = 0.872	R_int = 0.040
9640 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.054	51 restraints
wR(F²) = 0.171	H-atom parameters constrained
S = 1.12	Δρ_max = 1.03 e Å⁻³
2364 reflections	Δρ_min = −1.27 e Å⁻³
150 parameters

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq	Occ. (<1)
Cd1	0.5000	0.62834 (9)	0.2500	0.0559 (3)
O1	0.3446 (5)	0.7854 (9)	0.3202 (4)	0.0823 (15)
O2	0.2784 (5)	0.7239 (10)	0.1742 (3)	0.0863 (16)
N1	0.5040 (6)	0.3945 (8)	0.3589 (4)	0.0662 (14)
C1	0.2552 (5)	0.7942 (8)	0.2473 (4)	0.0550 (13)
C2	0.1213 (9)	0.8972 (19)	0.2457 (10)	0.056 (9)	0.50
H2	0.1436	1.0054	0.2855	0.067*	0.50
C3	0.0477 (13)	0.965 (3)	0.1520 (10)	0.089 (4)	0.50
H3A	0.0618	0.8805	0.1034	0.107*	0.50
H3B	0.0825	1.0848	0.1388	0.107*	0.50
C4	−0.1058 (14)	0.977 (3)	0.1565 (12)	0.105 (5)	0.50
H4A	−0.1358	1.1040	0.1544	0.126*	0.50
H4B	−0.1609	0.9116	0.1047	0.126*	0.50
C5	−0.1204 (10)	0.889 (3)	0.2478 (13)	0.080 (14)	0.50
H5	−0.1183	0.9937	0.2902	0.096*	0.50
C6	0.0133 (11)	0.7874 (13)	0.2848 (7)	0.055 (3)	0.50
C7	0.0441 (18)	0.764 (3)	0.3889 (8)	0.093 (5)	0.50
H7A	0.0492	0.8828	0.4181	0.140*	0.50
H7B	0.1307	0.7016	0.4072	0.140*	0.50
H7C	−0.0282	0.6937	0.4078	0.140*	0.50
C8	0.009 (5)	0.5890 (13)	0.261 (2)	0.067 (5)	0.50
H8A	−0.0122	0.5751	0.1944	0.100*	0.50
H8B	−0.0599	0.5288	0.2880	0.100*	0.50
H8C	0.0980	0.5348	0.2843	0.100*	0.50
C9	0.5964 (9)	0.2616 (14)	0.3637 (7)	0.103 (3)
H9	0.6640	0.2744	0.3275	0.124*
C10	0.6011 (9)	0.1056 (12)	0.4177 (7)	0.090 (3)
H10	0.6697	0.0179	0.4178	0.109*
C11	0.5015 (7)	0.0832 (9)	0.4713 (4)	0.0557 (13)
C12	0.4087 (8)	0.2236 (11)	0.4689 (5)	0.076 (2)
H12	0.3419	0.2171	0.5060	0.091*
C13	0.4122 (8)	0.3746 (10)	0.4125 (5)	0.0710 (18)
H13	0.3465	0.4663	0.4125	0.085*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Cd1	0.0517 (4)	0.0662 (4)	0.0532 (4)	0.000	0.0187 (2)	0.000
O1	0.061 (3)	0.110 (4)	0.074 (3)	0.018 (3)	0.008 (2)	−0.020 (3)
O2	0.056 (2)	0.140 (5)	0.065 (3)	0.005 (3)	0.016 (2)	−0.014 (3)
N1	0.072 (3)	0.069 (3)	0.062 (3)	0.007 (3)	0.025 (3)	0.013 (2)
C1	0.046 (3)	0.059 (3)	0.060 (3)	−0.004 (3)	0.012 (2)	0.005 (3)
C2	0.040 (10)	0.058 (11)	0.071 (11)	−0.010 (6)	0.015 (6)	−0.001 (6)
C3	0.075 (7)	0.105 (8)	0.088 (8)	0.012 (7)	0.017 (6)	0.028 (7)
C4	0.087 (8)	0.126 (9)	0.100 (9)	−0.030 (7)	0.017 (7)	0.040 (8)
C5	0.070 (16)	0.080 (16)	0.089 (15)	0.005 (8)	0.016 (9)	0.000 (8)
C6	0.049 (5)	0.060 (5)	0.056 (5)	−0.006 (5)	0.013 (5)	0.001 (4)
C7	0.086 (8)	0.110 (9)	0.086 (8)	0.007 (7)	0.021 (7)	0.005 (7)
C8	0.058 (9)	0.065 (5)	0.079 (11)	−0.002 (8)	0.018 (8)	0.003 (7)
C9	0.094 (6)	0.113 (7)	0.121 (7)	0.026 (5)	0.066 (5)	0.055 (6)
C10	0.084 (5)	0.095 (6)	0.106 (6)	0.027 (4)	0.052 (5)	0.040 (5)
C11	0.064 (3)	0.062 (3)	0.043 (3)	−0.002 (3)	0.015 (2)	−0.003 (2)
C12	0.090 (5)	0.079 (4)	0.071 (4)	0.015 (4)	0.046 (4)	0.015 (4)
C13	0.082 (4)	0.074 (4)	0.063 (4)	0.011 (4)	0.030 (3)	0.007 (3)

Geometric parameters (Å, º) top

Cd1—N1ⁱ	2.328 (5)	C4—H4B	0.9700
Cd1—N1	2.328 (5)	C5—C1ⁱⁱ	1.512 (9)
Cd1—O1	2.303 (5)	C5—C6	1.520 (10)
Cd1—O1ⁱ	2.303 (5)	C5—H5	0.9800
Cd1—O2ⁱ	2.359 (5)	C6—C8	1.487 (9)
Cd1—O2	2.359 (5)	C6—C7	1.507 (9)
Cd1—C1ⁱ	2.691 (5)	C7—H7A	0.9600
O1—C1	1.250 (7)	C7—H7B	0.9600
O2—C1	1.247 (7)	C7—H7C	0.9600
N1—C13	1.313 (9)	C8—H8A	0.9600
N1—C9	1.322 (10)	C8—H8B	0.9600
C1—C5ⁱⁱ	1.512 (9)	C8—H8C	0.9600
C1—C2	1.514 (9)	C9—C10	1.380 (11)
C2—C3	1.509 (10)	C9—H9	0.9300
C2—C6	1.526 (9)	C10—C11	1.377 (9)
C2—H2	0.9800	C10—H10	0.9300
C3—C4	1.528 (10)	C11—C12	1.368 (10)
C3—H3A	0.9700	C11—C11ⁱⁱⁱ	1.478 (12)
C3—H3B	0.9700	C12—C13	1.379 (10)
C4—C5	1.513 (10)	C12—H12	0.9300
C4—H4A	0.9700	C13—H13	0.9300

O1—Cd1—O1ⁱ	120.4 (3)	C5—C4—H4A	110.6
O1—Cd1—N1ⁱ	137.9 (2)	C3—C4—H4A	110.6
O1ⁱ—Cd1—N1ⁱ	89.1 (2)	C5—C4—H4B	110.6
O1—Cd1—N1	89.1 (2)	C3—C4—H4B	110.6
O1ⁱ—Cd1—N1	137.9 (2)	H4A—C4—H4B	108.7
N1ⁱ—Cd1—N1	86.0 (3)	C1ⁱⁱ—C5—C4	117.8 (11)
O1—Cd1—O2ⁱ	106.12 (19)	C1ⁱⁱ—C5—C6	118.0 (11)
O1ⁱ—Cd1—O2ⁱ	55.22 (17)	C4—C5—C6	107.5 (11)
N1ⁱ—Cd1—O2ⁱ	115.6 (2)	C1ⁱⁱ—C5—H5	103.8
N1—Cd1—O2ⁱ	89.9 (2)	C4—C5—H5	103.8
O1—Cd1—O2	55.22 (17)	C6—C5—H5	103.8
O1ⁱ—Cd1—O2	106.12 (19)	C8—C6—C7	97.0 (16)
N1ⁱ—Cd1—O2	89.9 (2)	C8—C6—C5	114 (2)
N1—Cd1—O2	115.6 (2)	C7—C6—C5	114.2 (11)
O2ⁱ—Cd1—O2	145.7 (3)	C8—C6—C2	114.1 (19)
O1—Cd1—C1ⁱ	116.12 (19)	C7—C6—C2	114.7 (11)
O1ⁱ—Cd1—C1ⁱ	27.62 (17)	C5—C6—C2	103.2 (7)
N1ⁱ—Cd1—C1ⁱ	103.72 (19)	C6—C7—H7A	109.5
N1—Cd1—C1ⁱ	114.8 (2)	C6—C7—H7B	109.5
O2ⁱ—Cd1—C1ⁱ	27.59 (17)	H7A—C7—H7B	109.5
O2—Cd1—C1ⁱ	128.4 (2)	C6—C7—H7C	109.5
C1—O1—Cd1	93.7 (4)	H7A—C7—H7C	109.5
C1—O2—Cd1	91.2 (4)	H7B—C7—H7C	109.5
C13—N1—C9	115.7 (6)	C6—C8—H8A	109.5
C13—N1—Cd1	124.5 (5)	C6—C8—H8B	109.5
C9—N1—Cd1	119.6 (4)	H8A—C8—H8B	109.5
O2—C1—O1	119.9 (5)	C6—C8—H8C	109.5
O2—C1—C5ⁱⁱ	122.3 (8)	H8A—C8—H8C	109.5
O1—C1—C5ⁱⁱ	117.8 (8)	H8B—C8—H8C	109.5
O2—C1—C2	119.4 (7)	N1—C9—C10	125.5 (7)
O1—C1—C2	120.7 (7)	N1—C9—H9	117.2
C3—C2—C1	116.4 (10)	C10—C9—H9	117.2
C3—C2—C6	105.3 (9)	C11—C10—C9	118.3 (7)
C1—C2—C6	113.7 (10)	C11—C10—H10	120.9
C3—C2—H2	107.0	C9—C10—H10	120.9
C1—C2—H2	107.0	C12—C11—C10	116.2 (6)
C6—C2—H2	107.0	C12—C11—C11ⁱⁱⁱ	122.8 (7)
C2—C3—C4	106.8 (10)	C10—C11—C11ⁱⁱⁱ	121.0 (7)
C2—C3—H3A	110.4	C11—C12—C13	121.3 (6)
C4—C3—H3A	110.4	C11—C12—H12	119.4
C2—C3—H3B	110.4	C13—C12—H12	119.4
C4—C3—H3B	110.4	N1—C13—C12	122.9 (7)
H3A—C3—H3B	108.6	N1—C13—H13	118.5
C5—C4—C3	105.9 (11)	C12—C13—H13	118.5

O1ⁱ—Cd1—O1—C1	88.7 (4)	C5ⁱⁱ—C1—C2—C3	−154 (14)
N1ⁱ—Cd1—O1—C1	−39.8 (6)	O2—C1—C2—C6	101.9 (11)
N1—Cd1—O1—C1	−122.8 (5)	O1—C1—C2—C6	−81.0 (12)
O2ⁱ—Cd1—O1—C1	147.5 (4)	C5ⁱⁱ—C1—C2—C6	−32 (13)
O2—Cd1—O1—C1	−0.3 (4)	C1—C2—C3—C4	153.2 (14)
C1ⁱ—Cd1—O1—C1	119.8 (4)	C6—C2—C3—C4	26.3 (19)
O1—Cd1—O2—C1	0.3 (4)	C2—C3—C4—C5	−8 (2)
O1ⁱ—Cd1—O2—C1	−115.9 (4)	C3—C4—C5—C1ⁱⁱ	−149.5 (17)
N1ⁱ—Cd1—O2—C1	155.1 (4)	C3—C4—C5—C6	−13 (2)
N1—Cd1—O2—C1	69.6 (5)	C1ⁱⁱ—C5—C6—C8	41 (2)
O2ⁱ—Cd1—O2—C1	−64.9 (4)	C4—C5—C6—C8	−95 (2)
C1ⁱ—Cd1—O2—C1	−97.3 (5)	C1ⁱⁱ—C5—C6—C7	−70 (2)
O1—Cd1—N1—C13	15.5 (6)	C4—C5—C6—C7	154.3 (15)
O1ⁱ—Cd1—N1—C13	153.2 (6)	C1ⁱⁱ—C5—C6—C2	165.3 (14)
N1ⁱ—Cd1—N1—C13	−122.6 (7)	C4—C5—C6—C2	29.1 (17)
O2ⁱ—Cd1—N1—C13	121.7 (6)	C3—C2—C6—C8	91 (2)
O2—Cd1—N1—C13	−34.6 (7)	C1—C2—C6—C8	−38.0 (19)
C1ⁱ—Cd1—N1—C13	134.1 (6)	C3—C2—C6—C7	−158.8 (13)
O1—Cd1—N1—C9	−170.5 (7)	C1—C2—C6—C7	72.7 (16)
O1ⁱ—Cd1—N1—C9	−32.9 (8)	C3—C2—C6—C5	−33.8 (14)
N1ⁱ—Cd1—N1—C9	51.3 (7)	C1—C2—C6—C5	−162.4 (12)
O2ⁱ—Cd1—N1—C9	−64.4 (7)	C13—N1—C9—C10	1.7 (15)
O2—Cd1—N1—C9	139.3 (7)	Cd1—N1—C9—C10	−172.8 (9)
C1ⁱ—Cd1—N1—C9	−52.0 (8)	N1—C9—C10—C11	0.4 (17)
Cd1—O2—C1—O1	−0.6 (7)	C9—C10—C11—C12	−2.6 (13)
Cd1—O2—C1—C5ⁱⁱ	−179.7 (11)	C9—C10—C11—C11ⁱⁱⁱ	178.3 (9)
Cd1—O2—C1—C2	176.6 (7)	C10—C11—C12—C13	2.7 (12)
Cd1—O1—C1—O2	0.6 (7)	C11ⁱⁱⁱ—C11—C12—C13	−178.2 (8)
Cd1—O1—C1—C5ⁱⁱ	179.8 (10)	C9—N1—C13—C12	−1.5 (12)
Cd1—O1—C1—C2	−176.5 (7)	Cd1—N1—C13—C12	172.6 (6)
O2—C1—C2—C3	−20.7 (16)	C11—C12—C13—N1	−0.7 (13)
O1—C1—C2—C3	156.4 (11)

Symmetry codes: (i) −x+1, y, −z+1/2; (ii) −x, y, −z+1/2; (iii) −x+1, −y, −z+1.

Experimental details

Crystal data
Chemical formula	[Cd(C₉H₁₂O₄)(C₁₀H₈N₂)]
M_r	452.77
Crystal system, space group	Monoclinic, P2/c
Temperature (K)	293
a, b, c (Å)	9.8527 (5), 7.2830 (4), 14.6432 (9)
β (°)	100.879 (1)
V (Å³)	1031.87 (10)
Z	2
Radiation type	Mo Kα
µ (mm⁻¹)	1.08
Crystal size (mm)	0.18 × 0.15 × 0.13

Data collection
Diffractometer	Rigaku R-AXIS RAPID IP diffractometer
Absorption correction	Multi-scan (ABSCOR; Higashi, 1995)
T_min, T_max	0.829, 0.872
No. of measured, independent and observed [I > 2σ(I)] reflections	9640, 2364, 1774
R_int	0.040
(sin θ/λ)_max (Å⁻¹)	0.648

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.054, 0.171, 1.12
No. of reflections	2364
No. of parameters	150
No. of restraints	51
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	1.03, −1.27

Computer programs: RAPID-AUTO (Rigaku, 1998), CrystalClear (Rigaku/MSC, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), X-SEED (Barbour, 2001), publCIF (Westrip, 2010).

Selected bond lengths (Å) top

Cd1—N1	2.328 (5)	Cd1—O2	2.359 (5)
Cd1—O1	2.303 (5)

Acknowledgements

This work is supported by the Key Project of the Natural Science Foundation of Heilongjiang Province (grant No. ZD200903), the Innovation Team of the Education Bureau of Heilongjiang Province (grant No. 2010 t d03), the Key Project of the Education Bureau of Heilongjiang Province (grant No. 12511z023) and the University of Malaya.

References

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