Bis[μ-4-(dimethyl­amino)­benzoato]-κ3O,O′:O;κ3O:O,O′-bis­{aqua­[4-(dimethyl­amino)­benzoato-κ2O,O′](nicotinamide-κN1)cadmium(II)}

Hökelek, T.; Süzen, Y.; Tercan, B.; Aybirdi, Ö.; Necefoğlu, H.

doi:10.1107/S160053681002163X

metal-organic compounds

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ISSN: 2056-9890

Volume 66| Part 7| July 2010| Pages m782-m783

doi:10.1107/S160053681002163X

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Bis[μ-4-(dimethylamino)benzoato]-κ³O,O′:O;κ³O:O,O′-bis{aqua[4-(dimethylamino)benzoato-κ²O,O′](nicotinamide-κN¹)cadmium(II)}

Tuncer Hökelek,^a ^* Yasemin Süzen,^b Barış Tercan,^c Özgür Aybirdi ^d and Hacali Necefoğlu ^d

^aDepartment of Physics, Hacettepe University, 06800 Beytepe, Ankara, Turkey, ^bDepartment of Chemistry, Faculty of Science, Anadolu University, 26470 Yenibağlar, Eskişehir, Turkey, ^cDepartment of Physics, Karabük University, 78050, Karabük, Turkey, and ^dDepartment of Chemistry, Kafkas University, 63100 Kars, Turkey
^*Correspondence e-mail: merzifon@hacettepe.edu.tr

(Received 27 May 2010; accepted 7 June 2010; online 16 June 2010)

In the centrosymmetric dimeric Cd^II title compound, [Cd₂(C₉H₁₀NO₂)₄(C₆H₆N₂O)₂(H₂O)₂], each seven-coordinated Cd^II atom is chelated by the carboxylate groups of the two 4-(dimethylamino)benzoate (DMAB) anions; the two monomeric units are bridged through the two O atoms of the two carboxyl groups. In the crystal structure, intermolecular O—H⋯O, N—H⋯O and C—H⋯O hydrogen bonds link the molecules into a three-dimensional network. π–π contacts between the pyridine rings [centroid–centroid distance = 3.974 (1) Å] may further stabilize the structure. Weak C—H⋯π interactions are also observed.

Related literature

For the applications of transition metal complexes with molecules in biological systems, see: Antolini et al. (1982 ). Benzoic acid derivatives such as 4-aminobenzoic acid are used extensively as bifunctional organic ligands in coordination chemistry due to the their various coordination modes, see: Amiraslanov et al. (1979 ); Chen & Chen (2002 ); Hauptmann et al. (2000 ). In pellagra disease, niacin deficiency leads to loss of copper from the body with high serum and urinary copper levels, see: Krishnamachari (1974 ). The nicotinic acid derivative N,N-diethylnicotinamide (DENA) is an important respiratory stimulant, see: Bigoli et al. (1972 ). For structure–function–coordination relationships of the arylcarboxylate ion in Mn^II complexes of benzoic acid derivatives, see: Adiwidjaja et al. (1978 ); Antsyshkina et al. (1980 ); Catterick et al. (1974 ); Shnulin et al. (1981 ). For related structures, see: Greenaway et al. (1984 ); Hökelek & Necefoğlu (1996 ); Hökelek et al. (2009a ,b ,c ,d ).

Experimental

Crystal data

[Cd₂(C₉H₁₀NO₂)₄(C₆H₆N₂O)₂(H₂O)₂]
M_r = 1161.83
Triclinic, $[P \overline 1]$
a = 9.5453 (2) Å
b = 10.2372 (2) Å
c = 13.5697 (3) Å
α = 74.102 (3)°
β = 79.479 (3)°
γ = 66.547 (2)°
V = 1165.85 (5) Å³
Z = 1
Mo Kα radiation
μ = 0.99 mm⁻¹
T = 100 K
0.36 × 0.24 × 0.13 mm

Data collection

Bruker Kappa APEXII CCD area-detector diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2005 ) T_min = 0.752, T_max = 0.879
21249 measured reflections
5862 independent reflections
5498 reflections with I > 2σ(I)
R_int = 0.026

Refinement

R[F² > 2σ(F²)] = 0.022
wR(F²) = 0.056
S = 1.06
5862 reflections
328 parameters
H atoms treated by a mixture of independent and constrained refinement
Δρ_max = 0.67 e Å⁻³
Δρ_min = −0.49 e Å⁻³

Table 1
Selected bond lengths (Å)

Cd1—O1	2.3511 (12)
Cd1—O2	2.3362 (12)
Cd1—O3	2.5705 (13)
Cd1—O4ⁱ	2.5762 (12)
Cd1—O6	2.3170 (12)
Cd1—N3	2.3339 (14)
Symmetry code: (i) -x, -y, -z+1.

Table 2
Hydrogen-bond geometry (Å, °)

Cg2 and Cg3 are the centroids of the C11–C16 and N3/C19–C23 rings, respectively.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N4—H4A⋯O3ⁱⁱ	0.86	2.07	2.893 (2)	160
N4—H4B⋯O1ⁱ	0.86	2.24	2.993 (2)	147
O6—H61⋯O2ⁱⁱⁱ	0.79 (3)	1.97 (3)	2.749 (2)	176 (2)
O6—H62⋯O5^iv	0.82 (3)	1.91 (3)	2.703 (2)	163 (3)
C19—H19⋯O1ⁱ	0.93	2.44	3.302 (2)	155
C23—H23⋯O2ⁱⁱⁱ	0.93	2.57	3.372 (2)	144
C9—H9A⋯Cg3^v	0.96	2.61	3.434 (2)	144
C17—H17B⋯Cg2^vi	0.96	2.98	3.887 (3)	159
Symmetry codes: (i) -x, -y, -z+1; (ii) x, y-1, z; (iii) -x+1, -y, -z+1; (iv) x, y+1, z; (v) x, y, z+1; (vi) -x, -y+1, -z.

Data collection: APEX2 (Bruker, 2007 ); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2006 ); software used to prepare material for publication: WinGX (Farrugia, 1999 ) and PLATON (Spek, 2009 ).

Supporting information

Crystal structure: contains datablocks I, global. DOI: 10.1107/S160053681002163X/xu2771sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S160053681002163X/xu2771Isup2.hkl

checkCIF report

Comment top

Transition metal complexes with biochemical molecules show interesting physical and/or chemical properties, through which they may find applications in biological systems (Antolini et al., 1982). Some benzoic acid derivatives, such as 4-aminobenzoic acid, have been extensively reported in coordination chemistry, as bifunctional organic ligands, due to the varieties of their coordination modes (Chen & Chen, 2002; Amiraslanov et al., 1979; Hauptmann et al., 2000). Nicotinamide (NA) is one form of niacin. A deficiency of this vitamin leads to loss of copper from the body, known as pellagra disease. Victims of pellagra show unusually high serum and urinary copper levels (Krishnamachari, 1974). The nicotinic acid derivative N,N-Diethylnicotinamide (DENA) is an important respiratory stimulant (Bigoli et al., 1972).

The structure-function-coordination relationships of the arylcarboxylate ion in Cd^II complexes of benzoic acid derivatives may also change depending on the nature and position of the substituted groups on the benzene ring, the nature of the additional ligand molecule or solvent, and the pH and temperature of synthesis as in Mn(II) complexes (Shnulin et al., 1981; Antsyshkina et al., 1980; Adiwidjaja et al., 1978). When pyridine and its derivatives are used instead of water molecules, the structure is completely different (Catterick et al., 1974). We report herein the synthesis and the structure of the title compound, (I).

The title compound, (I), consists of dimeric units located around a crystallographic symmetry centre and made up of two Cd cations, four 4-(dimethylamino)benzoato (DMAB) anions, two nicotinamide (NA) ligands and two water molecules (Fig. 1). Each Cd(II) unit is chelated by the carboxylate O atoms of the two DMAB anions, and the two monomeric units are bridged through the two oxygen atoms of the two carboxylate groups about an inversion center. The coordination number of each Cd^II atom is seven. The Cd1···Cd1ⁱ distance is 3.8121 (2) Å and O4—Cd1—O4ⁱ angle is 76.87 (4)° (symmetry code: (i) -x, -y, 1 - z).

The average Cd—O bond length (Table 1) is 2.4302 (12) Å, and the Cd atom is displaced out of the least-squares planes of the carboxylate groups (O1/C1/O2) and (O3/C10/O4) by 0.4160 (1) and 0.6395 (1) Å, respectively. In (I), the O1—Cd1—O2 and O3—Cd1—O4 angles are 55.96 (4) and 53.78 (4) °, respectively. The corresponding O—M—O (where M is a metal) angles are 52.91 (4)° and 53.96 (4)° in [Cd(C₈H₅O₃)₂(C₆H₆N₂O)₂(H₂O)].H₂O (Hökelek et al., 2009a), 60.70 (4)° in [Co(C₉H₁₀NO₂)₂(C₆H₆N₂O)(H₂O)₂] (Hökelek et al., 2009b), 58.45 (9)° in [Mn(C₉H₁₀NO₂)₂(C₆H₆N₂O)(H₂O)₂] (Hökelek et al., 2009c), 60.03 (6)° in [Zn(C₈H₈NO₂)₂(C₆H₆N₂O)₂].H₂O (Hökelek et al., 2009 d), 58.3 (3)° in [Zn₂(DENA)₂(C₇H₅O₃)₄].2H₂O (Hökelek & Necefoğlu, 1996) and 55.2 (1)° in [Cu(Asp)₂(py)₂] (where Asp is acetylsalicylate and py is pyridine) (Greenaway et al., 1984).

The dihedral angles between the planar carboxylate groups and the adjacent benzene rings A (C2—C7) and B (C11—C16) are 11.48 (17) and 12.78 (13) °, respectively, while those between rings A, B, C (N3/C19—C23), D (Cd1/O1/O2/C1) and E (Cd1/O3/O4/C10) are A/B = 78.35 (7), A/C = 68.85 (6), B/C = 75.32 (6) and D/E = 61.98 (5)°.

In the crystal structure, intermolecular O—H···O, N—H···O and C—H···O hydrogen bonds (Table 2) link the molecules into a three dimensional network, in which they may be effective in the stabilization of the structure. The π–π contact between the pyridine rings, Cg3—Cg3ⁱ [symmetry code: (i) 1 - x, -1 - y, 1 - z, where Cg3 is the centroid of the ring C (N3/C19—C23)] may further stabilize the structure, with centroid-centroid distance of 3.974 (1) Å. There also exist two weak C—H···π interactions (Table 2).

Related literature top

For the applications of transition metal complexes with biochemical molecules in biological systems, see: Antolini et al. (1982). Benzoic acid derivatives such as 4-aminobenzoic acid are used extensively as bifunctional organic ligands in coordination chemistry due to the their various coordination modes, see: Amiraslanov et al. (1979); Chen & Chen (2002); Hauptmann et al. (2000). In pellagra disease, niacin deficiency leads to loss of copper from the body with high serum and urinary copper levels, see: Krishnamachari (1974). The nicotinic acid derivative N,N-diethylnicotinamide (DENA) is an important respiratory stimulant, see: Bigoli et al. (1972). For structure–function–coordination relationships of the arylcarboxylate ion in Mn^II complexes of benzoic acid derivatives, see: Adiwidjaja et al. (1978); Antsyshkina et al. (1980); Catterick et al. (1974); Shnulin et al. (1981). For related structures, see: Greenaway et al. (1984); Hökelek & Necefoğlu (1996); Hökelek et al. (2009a,b,c,d).

Experimental top

The title compound was prepared by the reaction of 3CdSO₄.H₂O (1.28 g, 5 mmol) in H₂O (30 ml) and NA (1.22 g, 10 mmol) in H₂O (20 ml) with sodium 4-(dimethylamino)benzoate (1.88 g, 10 mmol) in H₂O (150 ml). The mixture was filtered and set aside to crystallize at ambient temperature for one week, giving colorless single crystals.

Computing details top

Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2006); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).

Figures top

Fig. 1. The molecular structure of the title molecule with the atom-numbering scheme. Displacement ellipsoids are drawn at the 40% probability level [symmetry code: (') -x, -y, 1 - z]. Hydrogen atoms are omitted for clarity.

Bis[µ-4-(dimethylamino)benzoato]- κ³O,O':O;κ³O:O,O'-bis{aqua[4- (dimethylamino)benzoato-κ²O,O'](nicotinamide- κN¹)cadmium(II)} top

Crystal data top

[Cd₂(C₉H₁₀NO₂)₄(C₆H₆N₂O)₂(H₂O)₂]	Z = 1
M_r = 1161.83	F(000) = 592
Triclinic, P1	D_x = 1.655 Mg m⁻³
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 9.5453 (2) Å	Cell parameters from 9880 reflections
b = 10.2372 (2) Å	θ = 2.4–28.5°
c = 13.5697 (3) Å	µ = 0.99 mm⁻¹
α = 74.102 (3)°	T = 100 K
β = 79.479 (3)°	Block, colorless
γ = 66.547 (2)°	0.36 × 0.24 × 0.13 mm
V = 1165.85 (5) Å³

Data collection top

Bruker Kappa APEXII CCD area-detector diffractometer	5862 independent reflections
Radiation source: fine-focus sealed tube	5498 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.026
ϕ and ω scans	θ_max = 28.5°, θ_min = 1.6°
Absorption correction: multi-scan (SADABS; Bruker, 2005)	h = −12→12
T_min = 0.752, T_max = 0.879	k = −13→13
21249 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)] = 0.022	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.056	H atoms treated by a mixture of independent and constrained refinement
S = 1.06	w = 1/[σ²(F_o²) + (0.0271P)² + 0.7237P] where P = (F_o² + 2F_c²)/3
5862 reflections	(Δ/σ)_max < 0.001
328 parameters	Δρ_max = 0.67 e Å⁻³
0 restraints	Δρ_min = −0.49 e Å⁻³

Crystal data top

[Cd₂(C₉H₁₀NO₂)₄(C₆H₆N₂O)₂(H₂O)₂]	γ = 66.547 (2)°
M_r = 1161.83	V = 1165.85 (5) Å³
Triclinic, P1	Z = 1
a = 9.5453 (2) Å	Mo Kα radiation
b = 10.2372 (2) Å	µ = 0.99 mm⁻¹
c = 13.5697 (3) Å	T = 100 K
α = 74.102 (3)°	0.36 × 0.24 × 0.13 mm
β = 79.479 (3)°

Data collection top

Bruker Kappa APEXII CCD area-detector diffractometer	5862 independent reflections
Absorption correction: multi-scan (SADABS; Bruker, 2005)	5498 reflections with I > 2σ(I)
T_min = 0.752, T_max = 0.879	R_int = 0.026
21249 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.022	0 restraints
wR(F²) = 0.056	H atoms treated by a mixture of independent and constrained refinement
S = 1.06	Δρ_max = 0.67 e Å⁻³
5862 reflections	Δρ_min = −0.49 e Å⁻³
328 parameters

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

	x	y	z	U_iso*/U_eq
Cd1	0.180220 (12)	0.040917 (12)	0.492667 (9)	0.01404 (4)
O1	0.10108 (14)	0.14484 (13)	0.63748 (9)	0.0207 (2)
O2	0.33823 (14)	−0.01006 (15)	0.62185 (10)	0.0221 (3)
O3	0.02478 (14)	0.30555 (14)	0.40644 (10)	0.0212 (2)
O4	−0.02665 (13)	0.11559 (13)	0.40059 (9)	0.0189 (2)
O5	0.35463 (15)	−0.60232 (14)	0.34334 (13)	0.0320 (3)
O6	0.34839 (15)	0.12770 (14)	0.37393 (10)	0.0208 (3)
H61	0.438 (3)	0.091 (3)	0.374 (2)	0.039 (7)*
H62	0.331 (3)	0.215 (3)	0.364 (2)	0.042 (7)*
N1	0.2767 (2)	−0.0371 (2)	1.10325 (13)	0.0338 (4)
N2	−0.2931 (2)	0.5498 (2)	−0.01791 (15)	0.0481 (6)
N3	0.32213 (15)	−0.17835 (15)	0.44145 (11)	0.0161 (3)
N4	0.12133 (18)	−0.45388 (19)	0.38859 (17)	0.0367 (5)
H4A	0.0796	−0.5110	0.3814	0.044*
H4B	0.0655	−0.3738	0.4075	0.044*
C1	0.22674 (19)	0.06515 (18)	0.67584 (13)	0.0172 (3)
C2	0.24275 (19)	0.04966 (19)	0.78525 (13)	0.0188 (3)
C3	0.1236 (2)	0.1251 (2)	0.84793 (15)	0.0297 (4)
H3	0.0358	0.1959	0.8188	0.036*
C4	0.1318 (2)	0.0978 (3)	0.95279 (15)	0.0358 (5)
H4	0.0498	0.1506	0.9925	0.043*
C5	0.2614 (2)	−0.0079 (2)	1.00013 (14)	0.0241 (4)
C6	0.3803 (2)	−0.0844 (3)	0.93693 (17)	0.0432 (6)
H6	0.4680	−0.1559	0.9658	0.052*
C7	0.3707 (2)	−0.0565 (3)	0.83278 (17)	0.0414 (6)
H7	0.4520	−0.1101	0.7930	0.050*
C8	0.1518 (3)	0.0277 (3)	1.17494 (18)	0.0522 (7)
H8A	0.1926	0.0409	1.2296	0.078*
H8B	0.0955	−0.0355	1.2029	0.078*
H8C	0.0849	0.1207	1.1397	0.078*
C9	0.4091 (3)	−0.1524 (3)	1.14836 (17)	0.0412 (5)
H9A	0.4063	−0.1499	1.2189	0.062*
H9B	0.5002	−0.1395	1.1114	0.062*
H9C	0.4092	−0.2449	1.1449	0.062*
C10	−0.04015 (17)	0.25041 (18)	0.36627 (13)	0.0164 (3)
C11	−0.12533 (19)	0.33661 (18)	0.27396 (13)	0.0188 (3)
C12	−0.1946 (2)	0.2771 (2)	0.22633 (16)	0.0303 (4)
H12	−0.2022	0.1873	0.2590	0.036*
C13	−0.2528 (3)	0.3473 (3)	0.13181 (18)	0.0400 (5)
H13	−0.2986	0.3040	0.1022	0.048*
C14	−0.2439 (2)	0.4826 (3)	0.07997 (16)	0.0353 (5)
C15	−0.1832 (2)	0.5474 (2)	0.13103 (16)	0.0316 (4)
H15	−0.1824	0.6404	0.1010	0.038*
C16	−0.1245 (2)	0.4756 (2)	0.22524 (14)	0.0231 (4)
H16	−0.0835	0.5207	0.2569	0.028*
C17	−0.2400 (3)	0.6651 (4)	−0.07824 (19)	0.0612 (9)
H17A	−0.2756	0.6970	−0.1457	0.092*
H17B	−0.1300	0.6285	−0.0838	0.092*
H17C	−0.2792	0.7458	−0.0451	0.092*
C18	−0.3162 (4)	0.4603 (4)	−0.0761 (2)	0.0700 (11)
H18A	−0.3484	0.5187	−0.1424	0.105*
H18B	−0.3935	0.4231	−0.0396	0.105*
H18C	−0.2219	0.3802	−0.0846	0.105*
C19	0.25695 (18)	−0.26001 (17)	0.41870 (12)	0.0158 (3)
H19	0.1506	−0.2288	0.4251	0.019*
C20	0.34143 (18)	−0.38911 (17)	0.38596 (13)	0.0160 (3)
C21	0.50027 (19)	−0.43196 (18)	0.37210 (14)	0.0192 (3)
H21	0.5599	−0.5158	0.3479	0.023*
C22	0.56831 (19)	−0.34787 (18)	0.39492 (14)	0.0200 (3)
H22	0.6742	−0.3742	0.3861	0.024*
C23	0.47585 (18)	−0.22380 (18)	0.43116 (13)	0.0183 (3)
H23	0.5221	−0.1699	0.4491	0.022*
C24	0.27089 (19)	−0.48910 (18)	0.37050 (13)	0.0180 (3)

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Cd1	0.00975 (6)	0.01423 (6)	0.01936 (7)	−0.00424 (4)	−0.00041 (4)	−0.00645 (4)
O1	0.0180 (6)	0.0199 (6)	0.0216 (6)	−0.0039 (5)	−0.0013 (5)	−0.0055 (5)
O2	0.0146 (6)	0.0317 (7)	0.0235 (6)	−0.0076 (5)	0.0011 (5)	−0.0147 (5)
O3	0.0175 (6)	0.0234 (6)	0.0251 (6)	−0.0106 (5)	−0.0027 (5)	−0.0038 (5)
O4	0.0146 (5)	0.0156 (5)	0.0242 (6)	−0.0040 (4)	−0.0016 (5)	−0.0032 (5)
O5	0.0226 (7)	0.0207 (6)	0.0575 (10)	−0.0107 (5)	0.0111 (6)	−0.0216 (6)
O6	0.0140 (6)	0.0149 (6)	0.0319 (7)	−0.0055 (5)	0.0024 (5)	−0.0054 (5)
N1	0.0317 (9)	0.0417 (10)	0.0189 (8)	−0.0081 (8)	0.0012 (7)	−0.0031 (7)
N2	0.0338 (10)	0.0590 (14)	0.0280 (10)	0.0090 (9)	−0.0135 (8)	−0.0055 (9)
N3	0.0130 (6)	0.0142 (6)	0.0208 (7)	−0.0052 (5)	0.0000 (5)	−0.0043 (5)
N4	0.0140 (7)	0.0274 (8)	0.0800 (14)	−0.0064 (6)	0.0000 (8)	−0.0343 (9)
C1	0.0168 (7)	0.0183 (7)	0.0206 (8)	−0.0100 (6)	0.0016 (6)	−0.0075 (6)
C2	0.0173 (8)	0.0225 (8)	0.0199 (8)	−0.0098 (7)	0.0013 (6)	−0.0077 (6)
C3	0.0241 (9)	0.0290 (10)	0.0219 (9)	0.0031 (8)	0.0010 (7)	−0.0050 (7)
C4	0.0273 (10)	0.0416 (12)	0.0205 (9)	0.0025 (9)	0.0055 (8)	−0.0067 (8)
C5	0.0227 (9)	0.0290 (9)	0.0204 (8)	−0.0116 (7)	0.0015 (7)	−0.0040 (7)
C6	0.0231 (10)	0.0654 (16)	0.0308 (11)	0.0066 (10)	−0.0103 (8)	−0.0243 (11)
C7	0.0182 (9)	0.0676 (16)	0.0304 (11)	0.0054 (10)	−0.0056 (8)	−0.0284 (11)
C8	0.0413 (14)	0.0785 (19)	0.0211 (10)	−0.0141 (13)	0.0112 (9)	−0.0075 (11)
C9	0.0452 (13)	0.0485 (13)	0.0272 (10)	−0.0092 (11)	−0.0155 (9)	−0.0083 (10)
C10	0.0094 (7)	0.0177 (7)	0.0194 (8)	−0.0030 (6)	0.0010 (6)	−0.0045 (6)
C11	0.0132 (7)	0.0172 (7)	0.0217 (8)	0.0000 (6)	−0.0023 (6)	−0.0054 (6)
C12	0.0327 (10)	0.0223 (9)	0.0367 (11)	−0.0064 (8)	−0.0141 (8)	−0.0060 (8)
C13	0.0404 (12)	0.0380 (12)	0.0417 (12)	−0.0030 (10)	−0.0223 (10)	−0.0141 (10)
C14	0.0227 (9)	0.0399 (11)	0.0263 (10)	0.0078 (8)	−0.0082 (8)	−0.0061 (8)
C15	0.0222 (9)	0.0298 (10)	0.0290 (10)	−0.0014 (8)	−0.0015 (8)	0.0023 (8)
C16	0.0169 (8)	0.0226 (8)	0.0262 (9)	−0.0050 (7)	−0.0004 (7)	−0.0039 (7)
C17	0.0276 (12)	0.083 (2)	0.0278 (12)	0.0100 (12)	−0.0016 (9)	0.0126 (12)
C18	0.0556 (17)	0.085 (2)	0.0421 (15)	0.0227 (16)	−0.0289 (13)	−0.0291 (15)
C19	0.0124 (7)	0.0151 (7)	0.0199 (8)	−0.0058 (6)	0.0002 (6)	−0.0040 (6)
C20	0.0143 (7)	0.0138 (7)	0.0199 (8)	−0.0053 (6)	−0.0002 (6)	−0.0043 (6)
C21	0.0136 (7)	0.0155 (7)	0.0257 (8)	−0.0032 (6)	0.0017 (6)	−0.0058 (6)
C22	0.0106 (7)	0.0176 (8)	0.0293 (9)	−0.0042 (6)	0.0002 (6)	−0.0038 (7)
C23	0.0139 (7)	0.0169 (7)	0.0248 (8)	−0.0072 (6)	−0.0011 (6)	−0.0038 (6)
C24	0.0164 (7)	0.0141 (7)	0.0236 (8)	−0.0057 (6)	−0.0010 (6)	−0.0045 (6)

Geometric parameters (Å, º) top

Cd1—O1	2.3511 (12)	C8—H8A	0.9600
Cd1—O2	2.3362 (12)	C8—H8B	0.9600
Cd1—O3	2.5705 (13)	C8—H8C	0.9600
Cd1—O4ⁱ	2.5762 (12)	C9—H9A	0.9600
Cd1—O6	2.3170 (12)	C9—H9B	0.9600
Cd1—N3	2.3339 (14)	C9—H9C	0.9600
Cd1—C1	2.6955 (17)	C11—C10	1.485 (2)
O1—C1	1.262 (2)	C11—C12	1.385 (3)
O2—C1	1.278 (2)	C11—C16	1.398 (2)
O3—C10	1.253 (2)	C12—C13	1.381 (3)
O4—Cd1	2.2849 (12)	C12—H12	0.9300
O4—Cd1ⁱ	2.5762 (12)	C13—C14	1.400 (3)
O4—C10	1.291 (2)	C13—H13	0.9300
O5—C24	1.228 (2)	C14—N2	1.388 (3)
O6—H61	0.78 (3)	C15—C14	1.400 (3)
O6—H62	0.81 (3)	C15—H15	0.9300
N1—C5	1.371 (2)	C16—C15	1.381 (3)
N1—C8	1.452 (3)	C16—H16	0.9300
N1—C9	1.437 (3)	C17—N2	1.455 (4)
N3—C19	1.344 (2)	C17—H17A	0.9600
N3—C23	1.344 (2)	C17—H17B	0.9600
N4—C24	1.319 (2)	C17—H17C	0.9600
N4—H4A	0.8600	C18—N2	1.460 (4)
N4—H4B	0.8600	C18—H18A	0.9600
C1—C2	1.479 (2)	C18—H18B	0.9600
C2—C3	1.386 (2)	C18—H18C	0.9600
C2—C7	1.391 (3)	C19—C20	1.392 (2)
C3—C4	1.384 (3)	C19—H19	0.9300
C3—H3	0.9300	C20—C21	1.392 (2)
C4—H4	0.9300	C20—C24	1.504 (2)
C5—C4	1.399 (3)	C21—C22	1.387 (2)
C5—C6	1.394 (3)	C21—H21	0.9300
C6—C7	1.376 (3)	C22—H22	0.9300
C6—H6	0.9300	C23—C22	1.388 (2)
C7—H7	0.9300	C23—H23	0.9300

O1—Cd1—O3	80.40 (4)	C7—C6—C5	121.4 (2)
O1—Cd1—O4ⁱ	81.03 (4)	C7—C6—H6	119.3
O1—Cd1—C1	27.90 (5)	C2—C7—H7	119.1
O2—Cd1—O1	55.96 (4)	C6—C7—C2	121.85 (19)
O2—Cd1—O3	121.05 (4)	C6—C7—H7	119.1
O2—Cd1—O4ⁱ	95.15 (4)	N1—C8—H8A	109.5
O2—Cd1—C1	28.30 (5)	N1—C8—H8B	109.5
O3—Cd1—O4ⁱ	116.80 (4)	N1—C8—H8C	109.5
O3—Cd1—C1	103.06 (5)	H8A—C8—H8B	109.5
O4—Cd1—O1	108.51 (4)	H8A—C8—H8C	109.5
O4—Cd1—O2	163.91 (4)	H8B—C8—H8C	109.5
O4—Cd1—O3	53.78 (4)	N1—C9—H9A	109.5
O4—Cd1—O4ⁱ	76.87 (4)	N1—C9—H9B	109.5
O4—Cd1—O6	102.15 (5)	N1—C9—H9C	109.5
O4—Cd1—N3	98.43 (5)	H9A—C9—H9B	109.5
O4—Cd1—C1	135.79 (5)	H9A—C9—H9C	109.5
O4ⁱ—Cd1—C1	85.18 (4)	H9B—C9—H9C	109.5
O6—Cd1—O1	113.98 (5)	O3—C10—O4	120.68 (15)
O6—Cd1—O2	89.36 (5)	O3—C10—C11	120.28 (15)
O6—Cd1—O3	73.12 (4)	O4—C10—C11	118.91 (15)
O6—Cd1—O4ⁱ	163.97 (4)	C12—C11—C10	121.50 (16)
O6—Cd1—N3	84.01 (5)	C12—C11—C16	117.17 (17)
O6—Cd1—C1	105.44 (5)	C16—C11—C10	120.97 (16)
N3—Cd1—O1	142.57 (5)	C11—C12—H12	119.0
N3—Cd1—O2	93.88 (5)	C13—C12—C11	121.9 (2)
N3—Cd1—O3	137.02 (4)	C13—C12—H12	119.0
N3—Cd1—O4ⁱ	80.34 (4)	C12—C13—C14	121.0 (2)
N3—Cd1—C1	118.10 (5)	C12—C13—H13	119.5
C1—O1—Cd1	91.41 (10)	C14—C13—H13	119.5
C1—O2—Cd1	91.67 (10)	N2—C14—C13	121.5 (2)
C10—O3—Cd1	85.54 (10)	N2—C14—C15	121.4 (2)
Cd1—O4—Cd1ⁱ	103.13 (4)	C13—C14—C15	117.13 (18)
C10—O4—Cd1	97.69 (10)	C14—C15—H15	119.4
C10—O4—Cd1ⁱ	140.80 (10)	C16—C15—C14	121.2 (2)
Cd1—O6—H61	124 (2)	C16—C15—H15	119.4
Cd1—O6—H62	116.2 (19)	C11—C16—H16	119.3
H61—O6—H62	104 (3)	C15—C16—C11	121.40 (19)
C5—N1—C9	120.90 (18)	C15—C16—H16	119.3
C5—N1—C8	122.36 (19)	N2—C17—H17A	109.5
C9—N1—C8	115.94 (18)	N2—C17—H17B	109.5
C14—N2—C17	117.8 (2)	N2—C17—H17C	109.5
C14—N2—C18	117.6 (2)	H17A—C17—H17B	109.5
C17—N2—C18	115.8 (2)	H17A—C17—H17C	109.5
C19—N3—Cd1	122.92 (10)	H17B—C17—H17C	109.5
C23—N3—Cd1	119.01 (11)	N2—C18—H18A	109.5
C23—N3—C19	118.04 (14)	N2—C18—H18B	109.5
C24—N4—H4A	120.0	N2—C18—H18C	109.5
C24—N4—H4B	120.0	H18A—C18—H18B	109.5
H4A—N4—H4B	120.0	H18A—C18—H18C	109.5
O1—C1—Cd1	60.69 (9)	H18B—C18—H18C	109.5
O1—C1—O2	119.93 (15)	N3—C19—C20	122.96 (14)
O1—C1—C2	120.45 (15)	N3—C19—H19	118.5
O2—C1—Cd1	60.04 (9)	C20—C19—H19	118.5
O2—C1—C2	119.48 (15)	C19—C20—C21	118.29 (15)
C2—C1—Cd1	167.27 (11)	C19—C20—C24	123.42 (14)
C3—C2—C1	121.73 (16)	C21—C20—C24	118.20 (14)
C3—C2—C7	116.93 (17)	C20—C21—H21	120.5
C7—C2—C1	120.76 (16)	C22—C21—C20	119.03 (15)
C2—C3—H3	119.1	C22—C21—H21	120.5
C4—C3—C2	121.74 (18)	C21—C22—C23	118.92 (15)
C4—C3—H3	119.1	C21—C22—H22	120.5
C3—C4—C5	121.17 (18)	C23—C22—H22	120.5
C3—C4—H4	119.4	N3—C23—C22	122.66 (15)
C5—C4—H4	119.4	N3—C23—H23	118.7
N1—C5—C4	123.52 (18)	C22—C23—H23	118.7
N1—C5—C6	119.59 (18)	O5—C24—N4	122.03 (16)
C6—C5—C4	116.89 (18)	O5—C24—C20	118.99 (15)
C5—C6—H6	119.3	N4—C24—C20	118.97 (15)

O2—Cd1—O1—C1	−5.81 (9)	Cd1ⁱ—O4—Cd1—C1	−68.68 (7)
O3—Cd1—O1—C1	−144.01 (10)	C10—O4—Cd1—O1	70.86 (10)
O4—Cd1—O1—C1	169.50 (9)	C10—O4—Cd1—O2	85.00 (18)
O4ⁱ—Cd1—O1—C1	96.68 (10)	C10—O4—Cd1—O3	8.44 (9)
O6—Cd1—O1—C1	−77.44 (10)	C10—O4—Cd1—O4ⁱ	146.56 (11)
N3—Cd1—O1—C1	35.73 (13)	C10—O4—Cd1—O6	−49.84 (10)
O1—Cd1—O2—C1	5.74 (9)	C10—O4—Cd1—N3	−135.48 (10)
O3—Cd1—O2—C1	55.83 (11)	C10—O4—Cd1—C1	77.88 (11)
O4—Cd1—O2—C1	−10.5 (2)	Cd1—O4—C10—O3	−16.40 (16)
O4ⁱ—Cd1—O2—C1	−69.80 (10)	Cd1ⁱ—O4—C10—O3	105.49 (18)
O6—Cd1—O2—C1	125.61 (10)	Cd1—O4—C10—C11	159.57 (12)
N3—Cd1—O2—C1	−150.44 (10)	Cd1ⁱ—O4—C10—C11	−78.5 (2)
O1—Cd1—O3—C10	−130.16 (10)	C8—N1—C5—C4	7.3 (4)
O2—Cd1—O3—C10	−170.30 (9)	C8—N1—C5—C6	−173.6 (3)
O4—Cd1—O3—C10	−8.64 (9)	C9—N1—C5—C4	176.6 (2)
O4ⁱ—Cd1—O3—C10	−55.38 (10)	C9—N1—C5—C6	−4.3 (3)
O6—Cd1—O3—C10	111.01 (10)	Cd1—N3—C19—C20	178.53 (12)
N3—Cd1—O3—C10	50.07 (11)	C23—N3—C19—C20	0.5 (2)
C1—Cd1—O3—C10	−146.56 (9)	Cd1—N3—C23—C22	−175.85 (13)
O1—Cd1—N3—C19	104.17 (13)	C19—N3—C23—C22	2.3 (2)
O1—Cd1—N3—C23	−77.81 (14)	Cd1—C1—C2—C3	−93.7 (6)
O2—Cd1—N3—C19	137.60 (13)	Cd1—C1—C2—C7	77.3 (6)
O2—Cd1—N3—C23	−44.39 (13)	O1—C1—C2—C3	−2.3 (3)
O3—Cd1—N3—C19	−76.20 (14)	O1—C1—C2—C7	168.71 (19)
O3—Cd1—N3—C23	101.82 (13)	O2—C1—C2—C3	−177.86 (17)
O4—Cd1—N3—C19	−32.01 (13)	O2—C1—C2—C7	−6.9 (3)
O4ⁱ—Cd1—N3—C19	43.03 (12)	C1—C2—C3—C4	172.1 (2)
O4—Cd1—N3—C23	146.00 (12)	C7—C2—C3—C4	0.8 (3)
O4ⁱ—Cd1—N3—C23	−138.96 (13)	C1—C2—C7—C6	−172.4 (2)
O6—Cd1—N3—C19	−133.45 (13)	C3—C2—C7—C6	−1.0 (4)
O6—Cd1—N3—C23	44.56 (12)	C2—C3—C4—C5	−0.1 (4)
C1—Cd1—N3—C19	122.22 (12)	N1—C5—C4—C3	178.6 (2)
C1—Cd1—N3—C23	−59.76 (13)	C6—C5—C4—C3	−0.5 (4)
O1—Cd1—C1—O2	−169.81 (16)	N1—C5—C6—C7	−178.8 (3)
O1—Cd1—C1—C2	98.7 (5)	C4—C5—C6—C7	0.4 (4)
O2—Cd1—C1—O1	169.81 (16)	C5—C6—C7—C2	0.4 (4)
O2—Cd1—C1—C2	−91.5 (5)	C12—C11—C10—O3	178.21 (17)
O3—Cd1—C1—O1	36.50 (10)	C12—C11—C10—O4	2.2 (2)
O3—Cd1—C1—O2	−133.31 (10)	C16—C11—C10—O3	5.3 (2)
O3—Cd1—C1—C2	135.2 (5)	C16—C11—C10—O4	−170.72 (15)
O4—Cd1—C1—O1	−14.35 (13)	C10—C11—C12—C13	−169.52 (19)
O4ⁱ—Cd1—C1—O1	−79.92 (9)	C16—C11—C12—C13	3.7 (3)
O4—Cd1—C1—O2	175.84 (9)	C10—C11—C16—C15	170.03 (16)
O4ⁱ—Cd1—C1—O2	110.28 (10)	C12—C11—C16—C15	−3.2 (3)
O4—Cd1—C1—C2	84.4 (5)	C11—C12—C13—C14	0.0 (3)
O4ⁱ—Cd1—C1—C2	18.8 (5)	C12—C13—C14—N2	175.8 (2)
O6—Cd1—C1—O1	112.31 (10)	C12—C13—C14—C15	−4.1 (3)
O6—Cd1—C1—O2	−57.50 (10)	C13—C14—N2—C17	−162.1 (2)
O6—Cd1—C1—C2	−149.0 (5)	C13—C14—N2—C18	−15.8 (3)
N3—Cd1—C1—O1	−156.28 (9)	C15—C14—N2—C17	17.8 (3)
N3—Cd1—C1—O2	33.92 (11)	C15—C14—N2—C18	164.1 (2)
N3—Cd1—C1—C2	−57.5 (5)	C16—C15—C14—N2	−175.34 (19)
Cd1—O1—C1—O2	10.19 (16)	C16—C15—C14—C13	4.6 (3)
Cd1—O1—C1—C2	−165.37 (13)	C11—C16—C15—C14	−1.0 (3)
Cd1—O2—C1—O1	−10.26 (16)	N3—C19—C20—C21	−2.8 (2)
Cd1—O2—C1—C2	165.34 (13)	N3—C19—C20—C24	173.63 (15)
Cd1—O3—C10—O4	14.44 (14)	C19—C20—C21—C22	2.3 (2)
Cd1—O3—C10—C11	−161.46 (14)	C24—C20—C21—C22	−174.27 (16)
Cd1ⁱ—O4—Cd1—O1	−75.71 (5)	C19—C20—C24—O5	−178.59 (17)
Cd1ⁱ—O4—Cd1—O2	−61.56 (17)	C19—C20—C24—N4	0.0 (3)
Cd1ⁱ—O4—Cd1—O3	−138.13 (6)	C21—C20—C24—O5	−2.2 (3)
Cd1ⁱ—O4—Cd1—O4ⁱ	0.0	C21—C20—C24—N4	176.46 (18)
Cd1ⁱ—O4—Cd1—O6	163.60 (4)	C20—C21—C22—C23	0.2 (3)
Cd1ⁱ—O4—Cd1—N3	77.95 (5)	N3—C23—C22—C21	−2.6 (3)

Symmetry code: (i) −x, −y, −z+1.

Hydrogen-bond geometry (Å, º) top

Cg2 and Cg3 are the centroids of the C11–C16 and N3/C19–C23 rings, respectively.

D—H···A	D—H	H···A	D···A	D—H···A
N4—H4A···O3ⁱⁱ	0.86	2.07	2.893 (2)	160
N4—H4B···O1ⁱ	0.86	2.24	2.993 (2)	147
O6—H61···O2ⁱⁱⁱ	0.79 (3)	1.97 (3)	2.749 (2)	176 (2)
O6—H62···O5^iv	0.82 (3)	1.91 (3)	2.703 (2)	163 (3)
C19—H19···O1ⁱ	0.93	2.44	3.302 (2)	155
C23—H23···O2ⁱⁱⁱ	0.93	2.57	3.372 (2)	144
C9—H9A···Cg3^v	0.96	2.61	3.434 (2)	144
C17—H17B···Cg2^vi	0.96	2.98	3.887 (3)	159

Symmetry codes: (i) −x, −y, −z+1; (ii) x, y−1, z; (iii) −x+1, −y, −z+1; (iv) x, y+1, z; (v) x, y, z+1; (vi) −x, −y+1, −z.

Experimental details

Crystal data
Chemical formula	[Cd₂(C₉H₁₀NO₂)₄(C₆H₆N₂O)₂(H₂O)₂]
M_r	1161.83
Crystal system, space group	Triclinic, P1
Temperature (K)	100
a, b, c (Å)	9.5453 (2), 10.2372 (2), 13.5697 (3)
α, β, γ (°)	74.102 (3), 79.479 (3), 66.547 (2)
V (Å³)	1165.85 (5)
Z	1
Radiation type	Mo Kα
µ (mm⁻¹)	0.99
Crystal size (mm)	0.36 × 0.24 × 0.13

Data collection
Diffractometer	Bruker Kappa APEXII CCD area-detector diffractometer
Absorption correction	Multi-scan (SADABS; Bruker, 2005)
T_min, T_max	0.752, 0.879
No. of measured, independent and observed [I > 2σ(I)] reflections	21249, 5862, 5498
R_int	0.026
(sin θ/λ)_max (Å⁻¹)	0.671

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.022, 0.056, 1.06
No. of reflections	5862
No. of parameters	328
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement
Δρ_max, Δρ_min (e Å⁻³)	0.67, −0.49

Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), Mercury (Macrae et al., 2006), WinGX (Farrugia, 1999) and PLATON (Spek, 2009).

Selected bond lengths (Å) top

Cd1—O1	2.3511 (12)	Cd1—O4ⁱ	2.5762 (12)
Cd1—O2	2.3362 (12)	Cd1—O6	2.3170 (12)
Cd1—O3	2.5705 (13)	Cd1—N3	2.3339 (14)

Symmetry code: (i) −x, −y, −z+1.

Hydrogen-bond geometry (Å, º) top

Cg2 and Cg3 are the centroids of the C11–C16 and N3/C19–C23 rings, respectively.

D—H···A	D—H	H···A	D···A	D—H···A
N4—H4A···O3ⁱⁱ	0.86	2.07	2.893 (2)	160
N4—H4B···O1ⁱ	0.86	2.24	2.993 (2)	147
O6—H61···O2ⁱⁱⁱ	0.79 (3)	1.97 (3)	2.749 (2)	176 (2)
O6—H62···O5^iv	0.82 (3)	1.91 (3)	2.703 (2)	163 (3)
C19—H19···O1ⁱ	0.93	2.44	3.302 (2)	155
C23—H23···O2ⁱⁱⁱ	0.93	2.57	3.372 (2)	144
C9—H9A···Cg3^v	0.96	2.61	3.434 (2)	144
C17—H17B···Cg2^vi	0.96	2.98	3.887 (3)	159

Symmetry codes: (i) −x, −y, −z+1; (ii) x, y−1, z; (iii) −x+1, −y, −z+1; (iv) x, y+1, z; (v) x, y, z+1; (vi) −x, −y+1, −z.

Acknowledgements

The authors are indebted to Anadolu University and the Medicinal Plants and Medicine Research Centre of Anadolu University, Eskişehir, Turkey, for use of the X-ray diffractometer. This work was supported financially by Kafkas University Research Fund (grant No. 2009-FEF-03).

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Volume 66| Part 7| July 2010| Pages m782-m783

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