Di-μ-acetato-κ4O:O-bis­{(acetato-κ2O,O′)bis­[3-(1H-imidazol-1-yl-κN3)-1-phenyl­propan-1-one]cadmium} tetra­hydrate

Guo, J.-H.

doi:10.1107/S1600536811050021

metal-organic compounds

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ISSN: 2056-9890

Volume 67| Part 12| December 2011| Page m1884

https://doi.org/10.1107/S1600536811050021

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Di-μ-acetato-κ⁴O:O-bis{(acetato-κ²O,O′)bis[3-(1H-imidazol-1-yl-κN³)-1-phenylpropan-1-one]cadmium} tetrahydrate

Jian-Hua Guo ^a ^*

^aCollege of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, People's Republic of China
^*Correspondence e-mail: guojianhua1998@163.com

(Received 10 November 2011; accepted 22 November 2011; online 30 November 2011)

In the molecular structure of the title neutral binuclear complex, [Cd₂(C₂H₃O₂)₄(C₁₂H₁₂N₂O)₄]·4H₂O, each Cd^II atom is six-coordinated and exhibits a distorted octahedral geometry. Three O atoms from two acetate ions and one monodentate 3-(1H-imidazol-1-yl-κN³)-1-phenylpropan-1-one (L) ligand form the equatorial plane, while the bridging-O atom forming the longer Cd—O distance,and the N atom of the second L ligand, forming the longer Cd—N distance, occupy axial positions with an N—Cd—O angle of 170.77 (7)°. Intermolecular O—H⋯O hydrogen bonds exist between the lattice water molecules and the acetate ions of adjacent molecules, resulting in a two-dimensional supramolecular structure.

Related literature

For reviews on the generation of supramolecular structures based on coordination complexes, see: Barnett & Champness (2003 ); Roesky & Andruh (2003 ); Zaworotko (2001 ).

Experimental

Crystal data

[Cd₂(C₂H₃O₂)₄(C₁₂H₁₂N₂O)₄]·4H₂O
M_r = 1333.98
Monoclinic, P 2₁ /c
a = 18.818 (3) Å
b = 10.6490 (17) Å
c = 15.864 (3) Å
β = 112.036 (2)°
V = 2946.8 (8) Å³
Z = 2
Mo Kα radiation
μ = 0.80 mm⁻¹
T = 296 K
0.28 × 0.22 × 0.20 mm

Data collection

Bruker APEXII CCD area-detector diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ) T_min = 0.808, T_max = 0.857
17422 measured reflections
6806 independent reflections
4666 reflections with I > 2σ(I)
R_int = 0.027

Refinement

R[F² > 2σ(F²)] = 0.031
wR(F²) = 0.077
S = 1.00
6806 reflections
372 parameters
1 restraint
H-atom parameters constrained
Δρ_max = 0.53 e Å⁻³
Δρ_min = −0.46 e Å⁻³

Table 1
Selected bond lengths (Å)

Cd1—O5ⁱ	2.2331 (18)
Cd1—N1	2.238 (2)
Cd1—N3	2.349 (2)
Cd1—O3	2.354 (2)
Cd1—O4	2.446 (2)
Cd1—O5	2.5855 (18)
Symmetry code: (i) -x+1, -y+2, -z+2.

Table 2
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O7—H7A⋯O3ⁱⁱ	0.85	2.11	2.949 (3)	169
O7—H7B⋯O4ⁱⁱⁱ	0.85	1.99	2.829 (3)	171
O8—H8B⋯O6ⁱⁱⁱ	0.85	2.03	2.838 (3)	159
O8—H8A⋯O7^iv	0.85	1.97	2.818 (3)	174
Symmetry codes: (ii) $[-x+1, y-{\script{1\over 2}}, -z+{\script{3\over 2}}]$ ; (iii) x, y, z-1; (iv) -x+1, -y+1, -z.

Data collection: APEX2 (Bruker, 2003 ); cell refinement: SAINT (Bruker, 2003); 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) and DIAMOND (Brandenburg & Berndt, 1999 ); software used to prepare material for publication: SHELXTL.

Supporting information

Crystal structure: contains datablocks global, I. DOI: https://doi.org/10.1107/S1600536811050021/mw2039sup1.cif

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811050021/mw2039Isup2.hkl

checkCIF report

Comment top

Neutral organic ligands containing rigid or flexible spacers, such as 4,4'-bipyridine, 1,2-bis(4'-pyridyl)ethane, 1,2-bis(4-pyridyl)propane and many others, have been used to generate a rich variety of metal-organic architectures with different metal ions by various reaction procedures (Barnett & Champness, 2003; Zaworotko, 2001; Roesky & Andruh, 2003). In our recent research, we have initiated a synthetic approach employing the ligand 3-(1H-imidazol-1-yl)-1-phenylpropan-1-one (L), which consists of a propanone unit substituted with an imidazole and a phenyl group, in reaction with different metal ions to construct new functional frameworks. To explore this series, we synthesized the title compound, (I), a new Cd^II complex based on L. In the molecular structure of (I) (Fig. 1) each Cd^II atom is six-coordinated and exhibits a distorted octahedral geometry. Three O atoms from two acetate ions and one monodentate L ligand form the equatorial plane while one O atom from one acetate ion and the other monodentate L ligand occupy axial positions with an N3—Cd1—O5 angle of 170.77 (7)°. Atoms O5 and O5A of one pair of acetate ions serve to bridge the Cd^II centers in the centrosymmetric binuclear units. The mean planes of the imidazole and phenyl rings in the two unique ligands are nearly perpendicular to one another with the angles between these planes being 78.6 (1)° and 76.2 (1)°, respectively. Analysis of the crystal packing indicates that intermolecular O—H···O hydrogen bonds involving the lattice water molecules and both types of actate ions extend the binuclear units to produce a 2-D supramolecular framework structure, as shown in Fig. 2.

Related literature top

For reviews on the generation of supramolecular structures based on coordination complexes, see: Barnett & Champness (2003); Roesky & Andruh (2003); Zaworotko (2001).

Experimental top

Cd(OAc)₂.2H₂O (26.7 mg, 0.1 mmol) and 3-(1H-imidazol-1-yl)-1-phenylpropan-1-one (22.2 mg, 0.1 mmol) were mixed in a CH₃CN/H₂O (20 ml, 1:1 v/v) solution with vigorous stirring for ca 30 min. The resulting solution was filtered and left to stand at room temperature. Colorless block crystals of (I) suitable for X-ray analysis were obtained in 75% yield by slow evaporation of the solvent over a period of 1 week. Analysis, calculated for CdC₂₈H₃₄N₄O₈: C 50.42, H 5.14, N 8.40; found: C 50.45, H 5.03, N 8.32.

Structure description top

For reviews on the generation of supramolecular structures based on coordination complexes, see: Barnett & Champness (2003); Roesky & Andruh (2003); Zaworotko (2001).

Computing details top

Data collection: APEX2 (Bruker, 2003); cell refinement: SAINT (Bruker, 2003); data reduction: SAINT Bruker, (2003); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg & Berndt, 1999); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).

Figures top

	Fig. 1. The molecular structure of (I) using 30% probability ellipsoids (Symmetry transformation used to generate equivalent atoms: -x+1,-y+2,-z+2).
	Fig. 2. The 2-D supramolecular framework structure of compound, showing O—H···O hydrogen bonds as red dashed lines (the L ligands have been removed for clarity).

Di-µ-acetato-κ⁴O:O-bis{(acetato- κ²O,O')bis[3-(1H-imidazol-1-yl- κN³)-1-phenylpropan-1-one]cadmium} tetrahydrate top

Crystal data top

[Cd₂(C₂H₃O₂)₄(C₁₂H₁₂N₂O)₄]·4H₂O	F(000) = 1368
M_r = 1333.98	D_x = 1.503 Mg m⁻³
Monoclinic, P2₁/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybc	Cell parameters from 4777 reflections
a = 18.818 (3) Å	θ = 2.6–25.4°
b = 10.6490 (17) Å	µ = 0.80 mm⁻¹
c = 15.864 (3) Å	T = 296 K
β = 112.036 (2)°	Block, colorless
V = 2946.8 (8) Å³	0.28 × 0.22 × 0.20 mm
Z = 2

Data collection top

Bruker APEXII CCD area-detector diffractometer	6806 independent reflections
Radiation source: fine-focus sealed tube	4666 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.027
phi and ω scans	θ_max = 27.9°, θ_min = 2.2°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −24→24
T_min = 0.808, T_max = 0.857	k = −13→7
17422 measured reflections	l = −19→20

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)] = 0.031	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.077	H-atom parameters constrained
S = 1.00	w = 1/[σ²(F_o²) + (0.0307P)² + 1.0868P] where P = (F_o² + 2F_c²)/3
6806 reflections	(Δ/σ)_max = 0.004
372 parameters	Δρ_max = 0.53 e Å⁻³
1 restraint	Δρ_min = −0.46 e Å⁻³

Crystal data top

[Cd₂(C₂H₃O₂)₄(C₁₂H₁₂N₂O)₄]·4H₂O	V = 2946.8 (8) Å³
M_r = 1333.98	Z = 2
Monoclinic, P2₁/c	Mo Kα radiation
a = 18.818 (3) Å	µ = 0.80 mm⁻¹
b = 10.6490 (17) Å	T = 296 K
c = 15.864 (3) Å	0.28 × 0.22 × 0.20 mm
β = 112.036 (2)°

Data collection top

Bruker APEXII CCD area-detector diffractometer	6806 independent reflections
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	4666 reflections with I > 2σ(I)
T_min = 0.808, T_max = 0.857	R_int = 0.027
17422 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.031	1 restraint
wR(F²) = 0.077	H-atom parameters constrained
S = 1.00	Δρ_max = 0.53 e Å⁻³
6806 reflections	Δρ_min = −0.46 e Å⁻³
372 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	0.421249 (10)	0.990415 (18)	1.052021 (12)	0.03958 (7)
O1	0.08650 (12)	0.52281 (17)	0.69389 (16)	0.0617 (6)
O2	0.09479 (14)	1.4665 (2)	1.14769 (16)	0.0664 (6)
O3	0.50729 (12)	0.9464 (2)	1.20070 (14)	0.0602 (5)
O4	0.41427 (12)	0.80882 (18)	1.14306 (14)	0.0577 (5)
O5	0.51810 (10)	0.86982 (17)	1.00202 (13)	0.0477 (5)
O6	0.62749 (11)	0.76847 (17)	1.04134 (15)	0.0548 (5)
O7	0.37028 (13)	0.5542 (2)	0.13904 (16)	0.0776 (7)
H7A	0.4013	0.5150	0.1847	0.116*
H7B	0.3785	0.6323	0.1363	0.116*
O8	0.69937 (13)	0.5343 (2)	0.04085 (17)	0.0788 (7)
H8A	0.6793	0.5019	−0.0118	0.118*
H8B	0.6753	0.5955	0.0522	0.118*
N1	0.33866 (12)	0.9077 (2)	0.92267 (14)	0.0397 (5)
N2	0.25575 (12)	0.7856 (2)	0.82184 (15)	0.0411 (5)
N3	0.33891 (13)	1.0771 (2)	1.11710 (16)	0.0458 (5)
N4	0.26263 (13)	1.2047 (2)	1.15386 (16)	0.0478 (6)
C1	−0.07134 (16)	0.5507 (3)	0.6383 (2)	0.0521 (7)
H1	−0.0525	0.4736	0.6285	0.062*
C2	−0.14918 (18)	0.5682 (3)	0.6113 (2)	0.0621 (9)
H2	−0.1825	0.5029	0.5833	0.075*
C3	−0.17788 (17)	0.6812 (3)	0.6253 (2)	0.0575 (8)
H3	−0.2305	0.6925	0.6070	0.069*
C4	−0.12871 (17)	0.7779 (3)	0.6664 (2)	0.0585 (8)
H4	−0.1482	0.8548	0.6754	0.070*
C5	−0.05019 (16)	0.7610 (3)	0.6943 (2)	0.0506 (7)
H5	−0.0171	0.8264	0.7228	0.061*
C6	−0.02075 (15)	0.6472 (2)	0.68013 (18)	0.0404 (6)
C7	0.06321 (15)	0.6234 (2)	0.70880 (18)	0.0412 (6)
C8	0.11922 (14)	0.7264 (2)	0.75563 (18)	0.0421 (6)
H8A'	0.1106	0.7533	0.8094	0.051*
H8B'	0.1104	0.7979	0.7151	0.051*
C9	0.20162 (15)	0.6829 (2)	0.7829 (2)	0.0460 (7)
H9A	0.2116	0.6157	0.8271	0.055*
H9B	0.2092	0.6499	0.7299	0.055*
C10	0.27050 (18)	0.8835 (3)	0.77606 (19)	0.0588 (8)
H10	0.2492	0.8969	0.7136	0.071*
C11	0.32162 (17)	0.9573 (3)	0.8380 (2)	0.0535 (8)
H11	0.3423	1.0308	0.8253	0.064*
C12	0.29864 (15)	0.8039 (3)	0.91023 (18)	0.0435 (6)
H12	0.2998	0.7497	0.9567	0.052*
C13	0.2737 (2)	1.1008 (3)	1.2069 (3)	0.0884 (14)
H13	0.2532	1.0861	1.2511	0.106*
C14	0.3193 (2)	1.0238 (3)	1.1839 (3)	0.0791 (12)
H14	0.3355	0.9452	1.2095	0.095*
C15	0.30280 (15)	1.1856 (3)	1.10107 (19)	0.0456 (7)
H15	0.3050	1.2428	1.0578	0.055*
C16	0.21135 (17)	1.3088 (3)	1.1499 (2)	0.0533 (7)
H16A	0.2235	1.3793	1.1189	0.064*
H16B	0.2189	1.3352	1.2112	0.064*
C17	0.12822 (16)	1.2713 (3)	1.1001 (2)	0.0529 (7)
H17A	0.1193	1.2571	1.0366	0.063*
H17B	0.1188	1.1928	1.1252	0.063*
C18	0.07216 (17)	1.3690 (3)	1.10664 (19)	0.0496 (7)
C19	−0.01133 (18)	1.3416 (3)	1.0617 (2)	0.0528 (8)
C20	−0.03927 (19)	1.2307 (4)	1.0159 (2)	0.0643 (9)
H20	−0.0052	1.1694	1.0127	0.077*
C21	−0.1179 (2)	1.2100 (4)	0.9745 (2)	0.0803 (11)
H21	−0.1363	1.1349	0.9442	0.096*
C22	−0.1684 (2)	1.3016 (6)	0.9789 (3)	0.0948 (15)
H22	−0.2209	1.2887	0.9508	0.114*
C23	−0.1412 (3)	1.4115 (5)	1.0246 (3)	0.0941 (15)
H23	−0.1755	1.4725	1.0278	0.113*
C24	−0.0635 (2)	1.4325 (4)	1.0659 (2)	0.0701 (10)
H24	−0.0456	1.5074	1.0967	0.084*
C25	0.4710 (2)	0.8497 (3)	1.2087 (2)	0.0580 (8)
C26	0.4947 (2)	0.7839 (4)	1.2998 (2)	0.0951 (13)
H26A	0.4505	0.7716	1.3152	0.143*
H26B	0.5316	0.8344	1.3456	0.143*
H26C	0.5170	0.7040	1.2962	0.143*
C27	0.55988 (16)	0.7733 (2)	1.03291 (19)	0.0414 (6)
C28	0.5239 (2)	0.6615 (3)	1.0586 (3)	0.0913 (14)
H28A	0.5395	0.5864	1.0368	0.137*
H28B	0.4691	0.6690	1.0319	0.137*
H28C	0.5402	0.6574	1.1236	0.137*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Cd1	0.03298 (11)	0.04915 (12)	0.03321 (10)	−0.00241 (9)	0.00850 (8)	−0.00217 (9)
O1	0.0458 (12)	0.0424 (11)	0.0913 (17)	−0.0026 (9)	0.0192 (12)	−0.0128 (11)
O2	0.0781 (16)	0.0553 (13)	0.0701 (15)	0.0154 (11)	0.0328 (13)	−0.0027 (12)
O3	0.0589 (14)	0.0645 (13)	0.0470 (10)	0.0096 (11)	0.0079 (9)	0.0076 (10)
O4	0.0689 (15)	0.0505 (12)	0.0467 (12)	0.0119 (10)	0.0136 (11)	0.0053 (10)
O5	0.0434 (12)	0.0385 (10)	0.0631 (13)	0.0043 (8)	0.0221 (10)	0.0011 (9)
O6	0.0438 (12)	0.0479 (11)	0.0779 (15)	0.0059 (9)	0.0289 (11)	0.0033 (10)
O7	0.0796 (17)	0.0774 (15)	0.0695 (16)	−0.0069 (13)	0.0209 (13)	−0.0040 (13)
O8	0.0659 (16)	0.0728 (15)	0.0851 (18)	0.0276 (12)	0.0138 (13)	−0.0040 (13)
N1	0.0307 (12)	0.0490 (13)	0.0354 (12)	−0.0030 (10)	0.0078 (10)	−0.0028 (10)
N2	0.0321 (12)	0.0442 (12)	0.0399 (12)	−0.0049 (9)	0.0055 (10)	−0.0018 (10)
N3	0.0411 (14)	0.0507 (13)	0.0474 (14)	0.0069 (11)	0.0187 (11)	0.0059 (11)
N4	0.0452 (14)	0.0506 (13)	0.0537 (14)	0.0103 (11)	0.0254 (12)	0.0086 (12)
C1	0.0436 (17)	0.0450 (15)	0.063 (2)	−0.0082 (13)	0.0152 (15)	−0.0032 (14)
C2	0.0427 (19)	0.069 (2)	0.069 (2)	−0.0175 (16)	0.0144 (16)	−0.0054 (18)
C3	0.0347 (17)	0.082 (2)	0.0534 (19)	−0.0001 (16)	0.0144 (14)	0.0067 (17)
C4	0.0493 (19)	0.0628 (19)	0.061 (2)	0.0084 (15)	0.0184 (16)	−0.0030 (16)
C5	0.0412 (17)	0.0498 (16)	0.0554 (18)	−0.0030 (13)	0.0118 (14)	−0.0066 (14)
C6	0.0377 (15)	0.0437 (14)	0.0388 (15)	−0.0051 (12)	0.0131 (12)	0.0006 (12)
C7	0.0401 (16)	0.0377 (14)	0.0431 (15)	−0.0042 (11)	0.0126 (13)	0.0014 (12)
C8	0.0372 (15)	0.0396 (14)	0.0453 (16)	−0.0041 (11)	0.0106 (13)	−0.0029 (12)
C9	0.0390 (16)	0.0398 (14)	0.0528 (17)	−0.0060 (12)	0.0101 (13)	−0.0069 (13)
C10	0.069 (2)	0.0658 (19)	0.0327 (15)	−0.0226 (16)	0.0082 (15)	0.0039 (14)
C11	0.0566 (19)	0.0522 (17)	0.0440 (16)	−0.0187 (14)	0.0101 (14)	0.0048 (14)
C12	0.0349 (15)	0.0516 (16)	0.0396 (15)	−0.0042 (12)	0.0091 (12)	0.0055 (12)
C13	0.105 (3)	0.082 (3)	0.117 (3)	0.042 (2)	0.087 (3)	0.050 (2)
C14	0.092 (3)	0.067 (2)	0.109 (3)	0.033 (2)	0.072 (3)	0.041 (2)
C15	0.0405 (16)	0.0544 (17)	0.0425 (16)	0.0034 (13)	0.0164 (13)	0.0082 (13)
C16	0.056 (2)	0.0467 (16)	0.062 (2)	0.0089 (14)	0.0275 (16)	0.0016 (14)
C17	0.0543 (19)	0.0532 (17)	0.0546 (18)	0.0115 (14)	0.0244 (15)	−0.0007 (14)
C18	0.058 (2)	0.0533 (17)	0.0430 (16)	0.0172 (15)	0.0255 (15)	0.0116 (14)
C19	0.0548 (19)	0.068 (2)	0.0425 (17)	0.0206 (16)	0.0257 (15)	0.0180 (15)
C20	0.051 (2)	0.095 (3)	0.0479 (19)	0.0126 (19)	0.0204 (16)	0.0090 (18)
C21	0.060 (2)	0.129 (3)	0.050 (2)	−0.001 (2)	0.0185 (18)	0.009 (2)
C22	0.053 (2)	0.179 (5)	0.055 (2)	0.022 (3)	0.023 (2)	0.046 (3)
C23	0.073 (3)	0.147 (4)	0.077 (3)	0.060 (3)	0.046 (3)	0.057 (3)
C24	0.069 (3)	0.087 (2)	0.067 (2)	0.0357 (19)	0.040 (2)	0.0285 (19)
C25	0.066 (2)	0.0524 (19)	0.0524 (19)	0.0215 (16)	0.0184 (18)	0.0097 (15)
C26	0.116 (3)	0.083 (3)	0.058 (2)	0.007 (2)	0.001 (2)	0.029 (2)
C27	0.0458 (17)	0.0341 (13)	0.0492 (16)	−0.0003 (12)	0.0233 (14)	−0.0051 (12)
C28	0.097 (3)	0.0394 (18)	0.172 (4)	0.0031 (18)	0.090 (3)	0.010 (2)

Geometric parameters (Å, º) top

Cd1—O5ⁱ	2.2331 (18)	C7—C8	1.509 (3)
Cd1—N1	2.238 (2)	C8—C9	1.518 (3)
Cd1—N3	2.349 (2)	C8—H8A'	0.9700
Cd1—O3	2.354 (2)	C8—H8B'	0.9700
Cd1—O4	2.446 (2)	C9—H9A	0.9700
Cd1—O5	2.5855 (18)	C9—H9B	0.9700
Cd1—C25	2.749 (3)	C10—C11	1.342 (4)
O1—C7	1.214 (3)	C10—H10	0.9300
O2—C18	1.215 (3)	C11—H11	0.9300
O3—C25	1.268 (4)	C12—H12	0.9300
O4—C25	1.257 (4)	C13—C14	1.334 (4)
O5—C27	1.275 (3)	C13—H13	0.9300
O5—Cd1ⁱ	2.2331 (18)	C14—H14	0.9300
O6—C27	1.229 (3)	C15—H15	0.9300
O7—H7A	0.8500	C16—C17	1.517 (4)
O7—H7B	0.8499	C16—H16A	0.9700
O8—H8A	0.8500	C16—H16B	0.9700
O8—H8B	0.8500	C17—C18	1.512 (4)
N1—C12	1.311 (3)	C17—H17A	0.9700
N1—C11	1.364 (3)	C17—H17B	0.9700
N2—C12	1.344 (3)	C18—C19	1.490 (4)
N2—C10	1.358 (3)	C19—C20	1.382 (5)
N2—C9	1.464 (3)	C19—C24	1.398 (4)
N3—C15	1.316 (3)	C20—C21	1.393 (4)
N3—C14	1.369 (4)	C20—H20	0.9300
N4—C15	1.338 (3)	C21—C22	1.382 (6)
N4—C13	1.359 (4)	C21—H21	0.9300
N4—C16	1.455 (3)	C22—C23	1.371 (6)
C1—C2	1.376 (4)	C22—H22	0.9300
C1—C6	1.388 (4)	C23—C24	1.379 (5)
C1—H1	0.9300	C23—H23	0.9300
C2—C3	1.371 (4)	C24—H24	0.9300
C2—H2	0.9300	C25—C26	1.514 (4)
C3—C4	1.374 (4)	C26—H26A	0.9600
C3—H3	0.9300	C26—H26B	0.9600
C4—C5	1.386 (4)	C26—H26C	0.9600
C4—H4	0.9300	C27—C28	1.499 (4)
C5—C6	1.386 (4)	C28—H28A	0.9600
C5—H5	0.9300	C28—H28B	0.9600
C6—C7	1.492 (4)	C28—H28C	0.9600

O5ⁱ—Cd1—N1	100.91 (7)	C11—C10—N2	107.0 (2)
O5ⁱ—Cd1—N3	115.03 (7)	C11—C10—H10	126.5
N1—Cd1—N3	102.24 (8)	N2—C10—H10	126.5
O5ⁱ—Cd1—O3	105.01 (8)	C10—C11—N1	109.5 (2)
N1—Cd1—O3	145.14 (8)	C10—C11—H11	125.2
N3—Cd1—O3	87.54 (8)	N1—C11—H11	125.2
O5ⁱ—Cd1—O4	154.40 (7)	N1—C12—N2	111.5 (2)
N1—Cd1—O4	93.31 (8)	N1—C12—H12	124.3
N3—Cd1—O4	82.00 (7)	N2—C12—H12	124.3
O3—Cd1—O4	54.55 (8)	C14—C13—N4	107.2 (3)
O5ⁱ—Cd1—O5	72.10 (7)	C14—C13—H13	126.4
N1—Cd1—O5	81.39 (7)	N4—C13—H13	126.4
N3—Cd1—O5	170.77 (7)	C13—C14—N3	110.2 (3)
O3—Cd1—O5	84.80 (7)	C13—C14—H14	124.9
O4—Cd1—O5	89.35 (6)	N3—C14—H14	124.9
O5ⁱ—Cd1—C25	131.37 (9)	N3—C15—N4	112.6 (2)
N1—Cd1—C25	119.91 (10)	N3—C15—H15	123.7
N3—Cd1—C25	82.74 (8)	N4—C15—H15	123.7
O3—Cd1—C25	27.40 (9)	N4—C16—C17	111.1 (2)
O4—Cd1—C25	27.21 (8)	N4—C16—H16A	109.4
O5—Cd1—C25	88.09 (8)	C17—C16—H16A	109.4
C25—O3—Cd1	93.93 (19)	N4—C16—H16B	109.4
C25—O4—Cd1	89.92 (19)	C17—C16—H16B	109.4
C27—O5—Cd1ⁱ	110.77 (16)	H16A—C16—H16B	108.0
C27—O5—Cd1	133.36 (17)	C18—C17—C16	113.1 (3)
Cd1ⁱ—O5—Cd1	107.90 (7)	C18—C17—H17A	109.0
H7A—O7—H7B	116.4	C16—C17—H17A	109.0
H8A—O8—H8B	116.3	C18—C17—H17B	109.0
C12—N1—C11	105.6 (2)	C16—C17—H17B	109.0
C12—N1—Cd1	129.21 (18)	H17A—C17—H17B	107.8
C11—N1—Cd1	125.20 (18)	O2—C18—C19	121.2 (3)
C12—N2—C10	106.5 (2)	O2—C18—C17	120.7 (3)
C12—N2—C9	126.8 (2)	C19—C18—C17	118.0 (3)
C10—N2—C9	126.7 (2)	C20—C19—C24	118.8 (3)
C15—N3—C14	104.1 (2)	C20—C19—C18	122.9 (3)
C15—N3—Cd1	129.63 (18)	C24—C19—C18	118.3 (3)
C14—N3—Cd1	126.21 (19)	C19—C20—C21	120.7 (3)
C15—N4—C13	105.9 (2)	C19—C20—H20	119.7
C15—N4—C16	127.6 (2)	C21—C20—H20	119.7
C13—N4—C16	126.3 (2)	C22—C21—C20	119.5 (4)
C2—C1—C6	120.5 (3)	C22—C21—H21	120.3
C2—C1—H1	119.7	C20—C21—H21	120.3
C6—C1—H1	119.7	C23—C22—C21	120.2 (4)
C3—C2—C1	120.4 (3)	C23—C22—H22	119.9
C3—C2—H2	119.8	C21—C22—H22	119.9
C1—C2—H2	119.8	C22—C23—C24	120.5 (4)
C2—C3—C4	119.9 (3)	C22—C23—H23	119.7
C2—C3—H3	120.1	C24—C23—H23	119.7
C4—C3—H3	120.1	C23—C24—C19	120.3 (4)
C3—C4—C5	120.2 (3)	C23—C24—H24	119.9
C3—C4—H4	119.9	C19—C24—H24	119.9
C5—C4—H4	119.9	O4—C25—O3	121.3 (3)
C4—C5—C6	120.3 (3)	O4—C25—C26	119.0 (3)
C4—C5—H5	119.9	O3—C25—C26	119.7 (3)
C6—C5—H5	119.9	O4—C25—Cd1	62.87 (16)
C5—C6—C1	118.7 (3)	O3—C25—Cd1	58.67 (15)
C5—C6—C7	122.7 (2)	C26—C25—Cd1	173.5 (2)
C1—C6—C7	118.5 (2)	C25—C26—H26A	109.5
O1—C7—C6	120.6 (2)	C25—C26—H26B	109.5
O1—C7—C8	120.0 (2)	H26A—C26—H26B	109.5
C6—C7—C8	119.4 (2)	C25—C26—H26C	109.5
C7—C8—C9	111.6 (2)	H26A—C26—H26C	109.5
C7—C8—H8A'	109.3	H26B—C26—H26C	109.5
C9—C8—H8A'	109.3	O6—C27—O5	122.6 (2)
C7—C8—H8B'	109.3	O6—C27—C28	119.4 (3)
C9—C8—H8B'	109.3	O5—C27—C28	118.0 (3)
H8A'—C8—H8B'	108.0	C27—C28—H28A	109.5
N2—C9—C8	111.5 (2)	C27—C28—H28B	109.5
N2—C9—H9A	109.3	H28A—C28—H28B	109.5
C8—C9—H9A	109.3	C27—C28—H28C	109.5
N2—C9—H9B	109.3	H28A—C28—H28C	109.5
C8—C9—H9B	109.3	H28B—C28—H28C	109.5
H9A—C9—H9B	108.0

O5ⁱ—Cd1—O3—C25	−165.80 (17)	C10—N2—C9—C8	−73.3 (4)
N1—Cd1—O3—C25	−29.1 (2)	C7—C8—C9—N2	175.6 (2)
N3—Cd1—O3—C25	78.93 (18)	C12—N2—C10—C11	0.1 (3)
O4—Cd1—O3—C25	−3.00 (17)	C9—N2—C10—C11	178.0 (3)
O5—Cd1—O3—C25	−95.91 (18)	N2—C10—C11—N1	−0.7 (4)
O5ⁱ—Cd1—O4—C25	44.4 (3)	C12—N1—C11—C10	1.1 (3)
N1—Cd1—O4—C25	168.43 (18)	Cd1—N1—C11—C10	179.5 (2)
N3—Cd1—O4—C25	−89.67 (18)	C11—N1—C12—N2	−1.1 (3)
O3—Cd1—O4—C25	3.02 (17)	Cd1—N1—C12—N2	−179.42 (16)
O5—Cd1—O4—C25	87.10 (18)	C10—N2—C12—N1	0.6 (3)
O5ⁱ—Cd1—O5—C27	144.8 (3)	C9—N2—C12—N1	−177.3 (2)
N1—Cd1—O5—C27	−110.7 (2)	C15—N4—C13—C14	−0.3 (4)
N3—Cd1—O5—C27	3.1 (6)	C16—N4—C13—C14	174.2 (3)
O3—Cd1—O5—C27	37.2 (2)	N4—C13—C14—N3	0.7 (5)
O4—Cd1—O5—C27	−17.2 (2)	C15—N3—C14—C13	−0.9 (4)
C25—Cd1—O5—C27	10.0 (2)	Cd1—N3—C14—C13	177.8 (3)
O5ⁱ—Cd1—O5—Cd1ⁱ	0.0	C14—N3—C15—N4	0.7 (4)
N1—Cd1—O5—Cd1ⁱ	104.48 (9)	Cd1—N3—C15—N4	−177.87 (18)
N3—Cd1—O5—Cd1ⁱ	−141.7 (4)	C13—N4—C15—N3	−0.3 (4)
O3—Cd1—O5—Cd1ⁱ	−107.62 (9)	C16—N4—C15—N3	−174.7 (3)
O4—Cd1—O5—Cd1ⁱ	−162.07 (8)	C15—N4—C16—C17	100.1 (3)
C25—Cd1—O5—Cd1ⁱ	−134.88 (10)	C13—N4—C16—C17	−73.3 (4)
O5ⁱ—Cd1—N1—C12	164.3 (2)	N4—C16—C17—C18	171.1 (2)
N3—Cd1—N1—C12	−76.8 (2)	C16—C17—C18—O2	0.8 (4)
O3—Cd1—N1—C12	26.7 (3)	C16—C17—C18—C19	−178.9 (2)
O4—Cd1—N1—C12	5.7 (2)	O2—C18—C19—C20	−178.7 (3)
O5—Cd1—N1—C12	94.5 (2)	C17—C18—C19—C20	1.0 (4)
C25—Cd1—N1—C12	11.8 (3)	O2—C18—C19—C24	1.5 (4)
O5ⁱ—Cd1—N1—C11	−13.7 (2)	C17—C18—C19—C24	−178.7 (3)
N3—Cd1—N1—C11	105.1 (2)	C24—C19—C20—C21	0.1 (5)
O3—Cd1—N1—C11	−151.3 (2)	C18—C19—C20—C21	−179.6 (3)
O4—Cd1—N1—C11	−172.4 (2)	C19—C20—C21—C22	0.4 (5)
O5—Cd1—N1—C11	−83.5 (2)	C20—C21—C22—C23	−0.8 (6)
C25—Cd1—N1—C11	−166.3 (2)	C21—C22—C23—C24	0.7 (6)
O5ⁱ—Cd1—N3—C15	25.8 (3)	C22—C23—C24—C19	−0.1 (5)
N1—Cd1—N3—C15	−82.6 (2)	C20—C19—C24—C23	−0.3 (5)
O3—Cd1—N3—C15	131.2 (2)	C18—C19—C24—C23	179.5 (3)
O4—Cd1—N3—C15	−174.2 (3)	Cd1—O4—C25—O3	−5.3 (3)
O5—Cd1—N3—C15	165.2 (3)	Cd1—O4—C25—C26	172.9 (3)
C25—Cd1—N3—C15	158.3 (3)	Cd1—O3—C25—O4	5.6 (3)
O5ⁱ—Cd1—N3—C14	−152.5 (3)	Cd1—O3—C25—C26	−172.7 (3)
N1—Cd1—N3—C14	99.1 (3)	O5ⁱ—Cd1—C25—O4	−156.24 (15)
O3—Cd1—N3—C14	−47.1 (3)	N1—Cd1—C25—O4	−13.4 (2)
O4—Cd1—N3—C14	7.5 (3)	N3—Cd1—C25—O4	86.62 (18)
O5—Cd1—N3—C14	−13.1 (6)	O3—Cd1—C25—O4	−174.6 (3)
C25—Cd1—N3—C14	−20.0 (3)	O5—Cd1—C25—O4	−92.28 (17)
C6—C1—C2—C3	0.0 (5)	O5ⁱ—Cd1—C25—O3	18.4 (2)
C1—C2—C3—C4	0.2 (5)	N1—Cd1—C25—O3	161.30 (16)
C2—C3—C4—C5	−0.5 (5)	N3—Cd1—C25—O3	−98.73 (18)
C3—C4—C5—C6	0.8 (5)	O4—Cd1—C25—O3	174.6 (3)
C4—C5—C6—C1	−0.6 (4)	O5—Cd1—C25—O3	82.37 (17)
C4—C5—C6—C7	−179.9 (3)	O5ⁱ—Cd1—C25—C26	95 (2)
C2—C1—C6—C5	0.2 (4)	N1—Cd1—C25—C26	−122 (2)
C2—C1—C6—C7	179.6 (3)	N3—Cd1—C25—C26	−22 (2)
C5—C6—C7—O1	−179.0 (3)	O3—Cd1—C25—C26	77 (2)
C1—C6—C7—O1	1.7 (4)	O4—Cd1—C25—C26	−108 (2)
C5—C6—C7—C8	0.2 (4)	O5—Cd1—C25—C26	159 (2)
C1—C6—C7—C8	−179.1 (3)	Cd1ⁱ—O5—C27—O6	8.6 (3)
O1—C7—C8—C9	−3.1 (4)	Cd1—O5—C27—O6	−135.5 (2)
C6—C7—C8—C9	177.7 (2)	Cd1ⁱ—O5—C27—C28	−170.7 (2)
C12—N2—C9—C8	104.2 (3)	Cd1—O5—C27—C28	45.2 (4)

Symmetry code: (i) −x+1, −y+2, −z+2.

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O7—H7A···O3ⁱⁱ	0.85	2.11	2.949 (3)	169
O7—H7B···O4ⁱⁱⁱ	0.85	1.99	2.829 (3)	171
O8—H8B···O6ⁱⁱⁱ	0.85	2.03	2.838 (3)	159
O8—H8A···O7^iv	0.85	1.97	2.818 (3)	174

Symmetry codes: (ii) −x+1, y−1/2, −z+3/2; (iii) x, y, z−1; (iv) −x+1, −y+1, −z.

Experimental details

Crystal data
Chemical formula	[Cd₂(C₂H₃O₂)₄(C₁₂H₁₂N₂O)₄]·4H₂O
M_r	1333.98
Crystal system, space group	Monoclinic, P2₁/c
Temperature (K)	296
a, b, c (Å)	18.818 (3), 10.6490 (17), 15.864 (3)
β (°)	112.036 (2)
V (Å³)	2946.8 (8)
Z	2
Radiation type	Mo Kα
µ (mm⁻¹)	0.80
Crystal size (mm)	0.28 × 0.22 × 0.20

Data collection
Diffractometer	Bruker APEXII CCD area-detector
Absorption correction	Multi-scan (SADABS; Sheldrick, 1996)
T_min, T_max	0.808, 0.857
No. of measured, independent and observed [I > 2σ(I)] reflections	17422, 6806, 4666
R_int	0.027
(sin θ/λ)_max (Å⁻¹)	0.658

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.031, 0.077, 1.00
No. of reflections	6806
No. of parameters	372
No. of restraints	1
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.53, −0.46

Computer programs: APEX2 (Bruker, 2003), SAINT (Bruker, 2003), SAINT Bruker, (2003), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg & Berndt, 1999), SHELXTL (Sheldrick, 2008).

Selected bond lengths (Å) top

Cd1—O5ⁱ	2.2331 (18)	Cd1—O3	2.354 (2)
Cd1—N1	2.238 (2)	Cd1—O4	2.446 (2)
Cd1—N3	2.349 (2)	Cd1—O5	2.5855 (18)

Symmetry code: (i) −x+1, −y+2, −z+2.

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O7—H7A···O3ⁱⁱ	0.85	2.11	2.949 (3)	169
O7—H7B···O4ⁱⁱⁱ	0.85	1.99	2.829 (3)	171
O8—H8B···O6ⁱⁱⁱ	0.85	2.03	2.838 (3)	159
O8—H8A···O7^iv	0.85	1.97	2.818 (3)	174

Symmetry codes: (ii) −x+1, y−1/2, −z+3/2; (iii) x, y, z−1; (iv) −x+1, −y+1, −z.

References

Barnett, S. A. & Champness, N. R. (2003). Coord. Chem. Rev. 246, 145–168. Web of Science CrossRef CAS Google Scholar
Brandenburg, K. & Berndt, M. (1999). DIAMOND. Crystal Impact GbR, Bonn, Germany. Google Scholar
Bruker (2003). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Roesky, H. W. & Andruh, M. (2003). Coord. Chem. Rev. 236, 91–119. Web of Science CrossRef CAS Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Zaworotko, M. J. (2001). Chem. Commun. pp. 1–9. Web of Science CrossRef Google Scholar

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