metal-organic compounds
Bis(μ-6-hydroxynaphthalene-1-carboxylato)bis[(6-hydroxynaphthalene-1-carboxylato)(1,10-phenanthroline)cadmium(II)] tetrahydrate
aZhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface & Interface Science, Henan, Zhengzhou 450002, People's Republic of China
*Correspondence e-mail: chunsenliu@zzuli.edu.cn
The title complex, [Cd2(C11H7O3)4(C12H8N2)2]·4H2O, has a centrosymmetric binuclear structure in which two CdII atoms are both six-coordinated and bridged by 6-hydroxynaphthalene-1-carboxylate ligands, with a Cd⋯Cd separation of 3.671 (1) Å. The remaining coordination sites are occupied by two N atoms of a 1,10-phenanthroline ligand and two O atoms of a 6-hydroxynaphthalene-1-carboxylate ligand. The crystal packing is stabilized by O—H⋯O hydrogen-bonding interactions.
Related literature
For the preparation of functional coordination architectures, see: Barnett & Champness (2003); Comba & Schiek (2003); Telfer & Kuroda (2003); Robin & Fromm (2006); Tranchemontagne et al. (2009). For complexes with carboxylic acid ligands, see: Bania et al. (2007); Liu et al. (2006); Marsh (2004); Paz & Klinowski (2004); Qin et al. (2008); Shi et al. (2005); Wu et al. (2006); Xu et al. (2005); Ye et al. (2005).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2007); cell 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: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536809043475/bt5107sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809043475/bt5107Isup2.hkl
A mixed solution of 2-naphthol-5-carboxylic acid (0.05 mmol) and 1,10-phenanthroline (0.05 mmol) in CH3OH (10 ml) in the presence of excess 2,6-dimethylpyridine (ca 0.05 ml for adjusting the pH value to basic condition) was carefully layered on top of a H2O solution (15 ml) of Cd(ClO4)2 (0.1 mmol) in a test tube. Yellow single crystals suitable for X-ray analysis of the title complex (I) appeared at the tube wall after ca three weeks at room temperature. Yield: ~30% based on 2-naphthol-5-carboxylic acid. Elemental analysis calculated for C68H52Cd2N4O16: C 58.09, H 3.73, N 3.98%; found: C 59.16, H 3.65, N 3.85%. IR (KBr pellet, cm-1): 3403 s (br), 2977m, 2931m, 2770w, 2559w, 1597m, 1554m, 1521 s, 1468w, 1422m, 1377 s, 1302m, 1243m, 1148m, 1100w, 1049w, 953m, 847m, 791m, 767m, 725m, 663m, 604w.
All H-atoms were refined as riding with O—H = 0.85Å and C—H = 0.93 Å and Uiso(H) = 1.2 Ueq (C,O).
Metallosupramolecular species built from transition metal ions and organic bridging ligands have been rapidly developed in recent years because of their fascinating structural diversities and potential applications as functional materials (Barnett & Champness, 2003; Comba & Schiek, 2003; Telfer & Kuroda, 2003; Robin & Fromm, 2006; Tranchemontagne et al., 2009). The effective and facile approach for the synthesis of such complexes is still the appropriate choice of well designed organic ligands as bridges or terminal groups with metal ions as nodes. Among various ligands, the versatile carboxylic acid ligands, especially for the benzene- and naphthalene-based di- and multi-carboxylic acids, have been most widely employed in the preparation of various CdII–carboxylate complexes (Marsh, 2004; Paz & Klinowski, 2004; Qin et al., 2008; Shi et al., 2005; Wu et al., 2006; Xu et al., 2005). In contrast, the skillful use of monocarboxylic acid ligands with the naphthalene skeleton to construct functional CdII–carboxylate compounds has been less investigated to date (Bania et al., 2007; Liu et al., 2006). In addition, the introduction of 2,2'-bipyridyl-like bidentate chelating molecules, such as 1,10-phenanthroline or 2,2'-bipyridine, as an auxiliary co-ligand into the reaction systems involving
usually leads to new products and commonly reduces dimensionality of the networks formed (Ye et al., 2005). We report here the of a CdII complex with mixed 2-naphthol-5-carboxylic acid and 1,10-phenanthroline as ligands.The structure of the title complex consists of a centrosymmetric dinuclear unit and four lattice water molecules. The CdII center is six-coordinated in an distorted octahedral geometry, by two nitrogen donors atoms from one phenanthroline ligand and four O-atoms from three 2-naphthol-5-carboxylate ligands. For 2-naphthol-5-carboxylate, there exist two different kinds of coordination modes with the CdII center, namely µ1-η1:η1-chelating and µ2-η2:η0-bridging modes. In this manner two CdIIcenter are connected to form a four-membered ring [Cd(1)–O(3)–Cd(1 A)–O(3 A)] with the Cd(1)···Cd(1 A) separation of 3.671 (1) Å (symmetry operation (A) = 1 - x, 1 - y, 1 - z).
For the preparation of functional coordination architectures, see: Barnett & Champness (2003); Comba & Schiek (2003); Telfer & Kuroda (2003); Robin & Fromm (2006); Tranchemontagne et al.(2009). For complexes with carboxylic acid ligands, see: Bania et al. (2007); Liu et al. (2006); Marsh (2004); Paz & Klinowski (2004); Qin et al. (2008); Shi et al. (2005); Wu et al. (2006); Xu et al. (2005); Ye et al. (2005).
Data collection: SMART (Bruker, 2007); cell
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: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).[Cd2(C11H7O3)4(C12H8N2)2]·4H2O | F(000) = 1424 |
Mr = 1405.96 | Dx = 1.611 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 11.7382 (11) Å | Cell parameters from 5160 reflections |
b = 15.1433 (14) Å | θ = 2.4–23.9° |
c = 18.2059 (13) Å | µ = 0.81 mm−1 |
β = 116.430 (4)° | T = 296 K |
V = 2897.9 (4) Å3 | Block, yellow |
Z = 2 | 0.28 × 0.21 × 0.18 mm |
Bruker SMART CCD area-detector diffractometer | 5096 independent reflections |
Radiation source: fine-focus sealed tube | 4064 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.037 |
φ and ω scans | θmax = 25.0°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −13→13 |
Tmin = 0.804, Tmax = 0.868 | k = −18→18 |
20423 measured reflections | l = −21→21 |
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)] = 0.028 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.063 | H-atom parameters constrained |
S = 1.03 | w = 1/[σ2(Fo2) + (0.022P)2 + 1.6679P] where P = (Fo2 + 2Fc2)/3 |
5096 reflections | (Δ/σ)max = 0.002 |
406 parameters | Δρmax = 0.30 e Å−3 |
0 restraints | Δρmin = −0.41 e Å−3 |
[Cd2(C11H7O3)4(C12H8N2)2]·4H2O | V = 2897.9 (4) Å3 |
Mr = 1405.96 | Z = 2 |
Monoclinic, P21/c | Mo Kα radiation |
a = 11.7382 (11) Å | µ = 0.81 mm−1 |
b = 15.1433 (14) Å | T = 296 K |
c = 18.2059 (13) Å | 0.28 × 0.21 × 0.18 mm |
β = 116.430 (4)° |
Bruker SMART CCD area-detector diffractometer | 5096 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 4064 reflections with I > 2σ(I) |
Tmin = 0.804, Tmax = 0.868 | Rint = 0.037 |
20423 measured reflections |
R[F2 > 2σ(F2)] = 0.028 | 0 restraints |
wR(F2) = 0.063 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.30 e Å−3 |
5096 reflections | Δρmin = −0.41 e Å−3 |
406 parameters |
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 | ||
Cd1 | 0.648118 (18) | 0.537570 (13) | 0.499232 (12) | 0.03367 (7) | |
O1 | 0.64852 (18) | 0.68046 (12) | 0.45742 (12) | 0.0398 (5) | |
O2 | 0.65340 (19) | 0.67592 (12) | 0.57928 (12) | 0.0462 (5) | |
O3 | 0.56800 (17) | 0.45469 (13) | 0.57326 (11) | 0.0410 (5) | |
O4 | 0.51162 (19) | 0.46283 (14) | 0.67285 (12) | 0.0490 (5) | |
O5 | 0.5108 (2) | 1.04569 (13) | 0.70518 (13) | 0.0550 (6) | |
H5B | 0.5048 | 1.0182 | 0.7421 | 0.082* | |
O6 | 1.0184 (2) | 0.17488 (14) | 0.63847 (15) | 0.0648 (7) | |
H6B | 1.0940 | 0.1780 | 0.6711 | 0.097* | |
N1 | 0.7308 (2) | 0.42210 (15) | 0.45474 (14) | 0.0359 (5) | |
N2 | 0.8635 (2) | 0.52345 (14) | 0.59125 (13) | 0.0332 (5) | |
C1 | 0.6666 (3) | 0.3693 (2) | 0.39153 (19) | 0.0494 (8) | |
H1A | 0.5793 | 0.3778 | 0.3619 | 0.059* | |
C2 | 0.7228 (3) | 0.3020 (2) | 0.3672 (2) | 0.0591 (9) | |
H2A | 0.6736 | 0.2655 | 0.3234 | 0.071* | |
C3 | 0.8509 (3) | 0.2903 (2) | 0.4086 (2) | 0.0570 (9) | |
H3A | 0.8906 | 0.2469 | 0.3920 | 0.068* | |
C4 | 0.9226 (3) | 0.34400 (19) | 0.47602 (18) | 0.0410 (7) | |
C5 | 1.0570 (3) | 0.3349 (2) | 0.5234 (2) | 0.0498 (8) | |
H5A | 1.1002 | 0.2935 | 0.5075 | 0.060* | |
C6 | 1.1222 (3) | 0.3842 (2) | 0.5897 (2) | 0.0486 (8) | |
H6A | 1.2097 | 0.3767 | 0.6191 | 0.058* | |
C7 | 1.0592 (2) | 0.44858 (19) | 0.61633 (17) | 0.0380 (7) | |
C8 | 1.1219 (3) | 0.4995 (2) | 0.6869 (2) | 0.0549 (9) | |
H8A | 1.2089 | 0.4925 | 0.7190 | 0.066* | |
C9 | 1.0569 (3) | 0.5592 (2) | 0.7088 (2) | 0.0566 (9) | |
H9A | 1.0981 | 0.5926 | 0.7563 | 0.068* | |
C10 | 0.9269 (3) | 0.5697 (2) | 0.65892 (18) | 0.0433 (7) | |
H10A | 0.8828 | 0.6113 | 0.6740 | 0.052* | |
C11 | 0.9278 (2) | 0.46242 (17) | 0.56963 (16) | 0.0307 (6) | |
C12 | 0.8583 (3) | 0.40913 (17) | 0.49782 (16) | 0.0323 (6) | |
C13 | 0.6536 (2) | 0.71904 (18) | 0.52027 (18) | 0.0363 (7) | |
C14 | 0.6668 (2) | 0.81874 (18) | 0.52391 (16) | 0.0347 (6) | |
C15 | 0.7268 (3) | 0.85596 (19) | 0.48148 (17) | 0.0386 (7) | |
H15A | 0.7517 | 0.8200 | 0.4498 | 0.046* | |
C16 | 0.7511 (3) | 0.94664 (19) | 0.48501 (18) | 0.0427 (7) | |
H16A | 0.7918 | 0.9704 | 0.4559 | 0.051* | |
C17 | 0.7152 (3) | 1.0001 (2) | 0.53121 (17) | 0.0423 (7) | |
H17A | 0.7340 | 1.0601 | 0.5347 | 0.051* | |
C18 | 0.6500 (2) | 0.96592 (18) | 0.57379 (16) | 0.0340 (6) | |
C19 | 0.6096 (3) | 1.02198 (19) | 0.61936 (17) | 0.0404 (7) | |
H19A | 0.6262 | 1.0822 | 0.6213 | 0.048* | |
C20 | 0.5467 (3) | 0.98935 (19) | 0.66048 (17) | 0.0398 (7) | |
C21 | 0.5185 (3) | 0.89926 (19) | 0.65634 (18) | 0.0442 (7) | |
H21A | 0.4743 | 0.8774 | 0.6840 | 0.053* | |
C22 | 0.5550 (3) | 0.84284 (19) | 0.61223 (18) | 0.0410 (7) | |
H22A | 0.5339 | 0.7833 | 0.6095 | 0.049* | |
C23 | 0.6245 (2) | 0.87360 (17) | 0.57055 (16) | 0.0335 (6) | |
C24 | 0.5938 (3) | 0.44834 (18) | 0.64928 (17) | 0.0367 (7) | |
C25 | 0.7267 (3) | 0.42322 (18) | 0.70921 (16) | 0.0347 (6) | |
C26 | 0.7973 (3) | 0.35801 (17) | 0.69061 (16) | 0.0338 (6) | |
C27 | 0.7474 (3) | 0.30337 (18) | 0.61980 (18) | 0.0424 (7) | |
H27A | 0.6619 | 0.3082 | 0.5827 | 0.051* | |
C28 | 0.8219 (3) | 0.24406 (19) | 0.60497 (19) | 0.0480 (8) | |
H28A | 0.7865 | 0.2093 | 0.5580 | 0.058* | |
C29 | 0.9512 (3) | 0.23452 (19) | 0.6594 (2) | 0.0472 (8) | |
C30 | 1.0025 (3) | 0.28396 (19) | 0.72909 (18) | 0.0435 (7) | |
H30A | 1.0880 | 0.2771 | 0.7655 | 0.052* | |
C31 | 0.9281 (3) | 0.34535 (18) | 0.74713 (17) | 0.0365 (7) | |
C32 | 0.9808 (3) | 0.3957 (2) | 0.81986 (17) | 0.0436 (7) | |
H32A | 1.0659 | 0.3879 | 0.8567 | 0.052* | |
C33 | 0.9095 (3) | 0.4554 (2) | 0.83720 (17) | 0.0464 (8) | |
H33A | 0.9455 | 0.4872 | 0.8859 | 0.056* | |
C34 | 0.7818 (3) | 0.4687 (2) | 0.78147 (17) | 0.0426 (7) | |
H34A | 0.7335 | 0.5093 | 0.7939 | 0.051* | |
O1W | 0.5418 (2) | 0.73556 (15) | 0.79947 (13) | 0.0609 (6) | |
H1 | 0.5421 | 0.6825 | 0.8149 | 0.073* | |
H2 | 0.5660 | 0.7580 | 0.8469 | 0.073* | |
O2W | 0.7302 (2) | 0.68503 (16) | 0.75316 (14) | 0.0703 (7) | |
H3 | 0.6802 | 0.7035 | 0.7721 | 0.084* | |
H4 | 0.7056 | 0.6987 | 0.7031 | 0.084* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cd1 | 0.02669 (11) | 0.03283 (12) | 0.04132 (13) | 0.00375 (9) | 0.01496 (9) | 0.00190 (10) |
O1 | 0.0447 (12) | 0.0340 (11) | 0.0414 (12) | 0.0026 (9) | 0.0198 (10) | −0.0031 (9) |
O2 | 0.0598 (14) | 0.0343 (11) | 0.0479 (13) | 0.0056 (10) | 0.0270 (11) | 0.0014 (10) |
O3 | 0.0316 (10) | 0.0542 (13) | 0.0301 (11) | −0.0029 (9) | 0.0075 (9) | 0.0117 (9) |
O4 | 0.0383 (12) | 0.0630 (14) | 0.0435 (12) | 0.0081 (11) | 0.0163 (10) | −0.0038 (11) |
O5 | 0.0792 (16) | 0.0432 (13) | 0.0489 (13) | 0.0118 (12) | 0.0342 (12) | −0.0012 (10) |
O6 | 0.0744 (16) | 0.0466 (14) | 0.0730 (17) | 0.0131 (12) | 0.0324 (14) | −0.0038 (12) |
N1 | 0.0318 (13) | 0.0312 (13) | 0.0397 (14) | 0.0015 (10) | 0.0115 (11) | 0.0006 (11) |
N2 | 0.0292 (12) | 0.0337 (13) | 0.0361 (13) | 0.0014 (10) | 0.0139 (10) | −0.0006 (10) |
C1 | 0.0446 (18) | 0.0463 (19) | 0.0471 (19) | −0.0024 (15) | 0.0114 (16) | −0.0044 (16) |
C2 | 0.067 (2) | 0.046 (2) | 0.056 (2) | −0.0020 (18) | 0.0203 (19) | −0.0174 (17) |
C3 | 0.069 (2) | 0.0444 (19) | 0.061 (2) | 0.0089 (18) | 0.033 (2) | −0.0127 (17) |
C4 | 0.0452 (18) | 0.0364 (16) | 0.0466 (18) | 0.0077 (14) | 0.0252 (15) | 0.0014 (14) |
C5 | 0.050 (2) | 0.0442 (19) | 0.066 (2) | 0.0179 (16) | 0.0366 (18) | 0.0073 (17) |
C6 | 0.0339 (17) | 0.057 (2) | 0.058 (2) | 0.0144 (15) | 0.0232 (16) | 0.0130 (17) |
C7 | 0.0286 (15) | 0.0434 (17) | 0.0413 (17) | 0.0048 (13) | 0.0150 (13) | 0.0091 (14) |
C8 | 0.0307 (16) | 0.073 (2) | 0.048 (2) | 0.0028 (16) | 0.0065 (15) | −0.0003 (18) |
C9 | 0.0446 (19) | 0.070 (2) | 0.0421 (19) | −0.0030 (17) | 0.0071 (16) | −0.0167 (17) |
C10 | 0.0415 (18) | 0.0455 (17) | 0.0406 (18) | 0.0021 (14) | 0.0163 (15) | −0.0077 (14) |
C11 | 0.0273 (14) | 0.0303 (14) | 0.0359 (15) | 0.0041 (12) | 0.0153 (12) | 0.0036 (13) |
C12 | 0.0336 (15) | 0.0288 (14) | 0.0366 (15) | 0.0026 (12) | 0.0175 (13) | 0.0048 (13) |
C13 | 0.0286 (15) | 0.0334 (16) | 0.0427 (18) | 0.0056 (12) | 0.0121 (14) | 0.0006 (14) |
C14 | 0.0280 (14) | 0.0348 (15) | 0.0349 (16) | 0.0049 (12) | 0.0083 (13) | 0.0021 (12) |
C15 | 0.0352 (16) | 0.0419 (17) | 0.0360 (16) | 0.0018 (13) | 0.0134 (13) | 0.0005 (13) |
C16 | 0.0426 (17) | 0.0462 (19) | 0.0410 (17) | −0.0068 (14) | 0.0202 (15) | 0.0031 (14) |
C17 | 0.0462 (18) | 0.0326 (15) | 0.0426 (18) | −0.0050 (14) | 0.0148 (15) | 0.0028 (14) |
C18 | 0.0309 (14) | 0.0323 (15) | 0.0297 (14) | 0.0017 (13) | 0.0053 (12) | 0.0023 (13) |
C19 | 0.0437 (17) | 0.0351 (17) | 0.0333 (16) | 0.0014 (14) | 0.0091 (14) | 0.0011 (13) |
C20 | 0.0432 (17) | 0.0392 (17) | 0.0327 (16) | 0.0085 (14) | 0.0130 (14) | 0.0006 (13) |
C21 | 0.0475 (18) | 0.0427 (18) | 0.0476 (18) | 0.0024 (15) | 0.0259 (15) | 0.0053 (15) |
C22 | 0.0408 (17) | 0.0339 (16) | 0.0490 (18) | 0.0008 (13) | 0.0206 (15) | 0.0017 (14) |
C23 | 0.0309 (15) | 0.0321 (15) | 0.0309 (15) | 0.0026 (12) | 0.0078 (12) | 0.0038 (12) |
C24 | 0.0340 (16) | 0.0339 (16) | 0.0351 (16) | −0.0029 (13) | 0.0091 (13) | 0.0011 (13) |
C25 | 0.0339 (15) | 0.0378 (15) | 0.0297 (15) | 0.0010 (13) | 0.0118 (13) | 0.0065 (13) |
C26 | 0.0359 (15) | 0.0317 (15) | 0.0300 (15) | −0.0030 (12) | 0.0111 (13) | 0.0048 (12) |
C27 | 0.0440 (17) | 0.0339 (16) | 0.0391 (17) | −0.0035 (14) | 0.0095 (14) | 0.0031 (14) |
C28 | 0.062 (2) | 0.0311 (16) | 0.0436 (18) | −0.0045 (15) | 0.0170 (17) | −0.0027 (14) |
C29 | 0.062 (2) | 0.0304 (16) | 0.055 (2) | 0.0074 (15) | 0.0315 (18) | 0.0066 (15) |
C30 | 0.0400 (17) | 0.0386 (17) | 0.0448 (19) | 0.0066 (14) | 0.0124 (15) | 0.0089 (15) |
C31 | 0.0370 (16) | 0.0338 (16) | 0.0342 (16) | 0.0014 (13) | 0.0119 (13) | 0.0077 (13) |
C32 | 0.0370 (16) | 0.0505 (19) | 0.0340 (16) | 0.0031 (15) | 0.0076 (14) | 0.0050 (14) |
C33 | 0.0462 (18) | 0.055 (2) | 0.0288 (15) | −0.0015 (16) | 0.0087 (14) | −0.0054 (15) |
C34 | 0.0422 (17) | 0.0482 (18) | 0.0359 (16) | 0.0041 (15) | 0.0161 (14) | 0.0001 (15) |
O1W | 0.0763 (16) | 0.0583 (15) | 0.0430 (13) | −0.0083 (13) | 0.0220 (12) | −0.0003 (11) |
O2W | 0.0676 (16) | 0.0829 (18) | 0.0647 (16) | 0.0084 (14) | 0.0332 (13) | 0.0077 (14) |
Cd1—O3i | 2.2827 (18) | C11—C12 | 1.441 (4) |
Cd1—O1 | 2.2945 (18) | C13—C14 | 1.516 (4) |
Cd1—N1 | 2.314 (2) | C14—C15 | 1.377 (4) |
Cd1—O3 | 2.3247 (18) | C14—C23 | 1.426 (4) |
Cd1—N2 | 2.339 (2) | C15—C16 | 1.398 (4) |
Cd1—O2 | 2.5370 (19) | C15—H15A | 0.9300 |
Cd1—C13 | 2.771 (3) | C16—C17 | 1.363 (4) |
Cd1—O4i | 2.846 (2) | C16—H16A | 0.9300 |
Cd1—Cd1i | 3.6706 (5) | C17—C18 | 1.408 (4) |
O1—C13 | 1.262 (3) | C17—H17A | 0.9300 |
O2—C13 | 1.258 (3) | C18—C19 | 1.409 (4) |
O3—C24 | 1.282 (3) | C18—C23 | 1.425 (4) |
O3—Cd1i | 2.2827 (18) | C19—C20 | 1.357 (4) |
O4—C24 | 1.238 (3) | C19—H19A | 0.9300 |
O4—Cd1i | 2.846 (2) | C20—C21 | 1.398 (4) |
O5—C20 | 1.369 (3) | C21—C22 | 1.366 (4) |
O5—H5B | 0.8200 | C21—H21A | 0.9300 |
O6—C29 | 1.360 (3) | C22—C23 | 1.418 (4) |
O6—H6B | 0.8200 | C22—H22A | 0.9300 |
N1—C1 | 1.326 (4) | C24—C25 | 1.501 (4) |
N1—C12 | 1.360 (3) | C25—C34 | 1.366 (4) |
N2—C10 | 1.322 (3) | C25—C26 | 1.424 (4) |
N2—C11 | 1.358 (3) | C26—C27 | 1.420 (4) |
C1—C2 | 1.389 (4) | C26—C31 | 1.431 (4) |
C1—H1A | 0.9300 | C27—C28 | 1.362 (4) |
C2—C3 | 1.361 (4) | C27—H27A | 0.9300 |
C2—H2A | 0.9300 | C28—C29 | 1.403 (4) |
C3—C4 | 1.399 (4) | C28—H28A | 0.9300 |
C3—H3A | 0.9300 | C29—C30 | 1.362 (4) |
C4—C12 | 1.402 (4) | C30—C31 | 1.411 (4) |
C4—C5 | 1.428 (4) | C30—H30A | 0.9300 |
C5—C6 | 1.334 (4) | C31—C32 | 1.410 (4) |
C5—H5A | 0.9300 | C32—C33 | 1.360 (4) |
C6—C7 | 1.432 (4) | C32—H32A | 0.9300 |
C6—H6A | 0.9300 | C33—C34 | 1.402 (4) |
C7—C8 | 1.394 (4) | C33—H33A | 0.9300 |
C7—C11 | 1.406 (4) | C34—H34A | 0.9300 |
C8—C9 | 1.353 (4) | O1W—H1 | 0.8500 |
C8—H8A | 0.9300 | O1W—H2 | 0.8500 |
C9—C10 | 1.395 (4) | O2W—H3 | 0.8499 |
C9—H9A | 0.9300 | O2W—H4 | 0.8502 |
C10—H10A | 0.9300 | ||
O3i—Cd1—O1 | 85.73 (7) | C9—C10—H10A | 118.5 |
O3i—Cd1—N1 | 111.57 (8) | N2—C11—C7 | 121.9 (2) |
O1—Cd1—N1 | 122.24 (7) | N2—C11—C12 | 118.7 (2) |
O3i—Cd1—O3 | 74.38 (7) | C7—C11—C12 | 119.4 (2) |
O1—Cd1—O3 | 139.69 (7) | N1—C12—C4 | 122.1 (3) |
N1—Cd1—O3 | 97.80 (8) | N1—C12—C11 | 118.4 (2) |
O3i—Cd1—N2 | 170.86 (7) | C4—C12—C11 | 119.5 (2) |
O1—Cd1—N2 | 99.36 (7) | O2—C13—O1 | 121.1 (3) |
N1—Cd1—N2 | 72.17 (8) | O2—C13—C14 | 121.2 (3) |
O3—Cd1—N2 | 97.04 (7) | O1—C13—C14 | 117.6 (3) |
O3i—Cd1—O2 | 91.52 (7) | O2—C13—Cd1 | 66.08 (15) |
O1—Cd1—O2 | 53.75 (7) | O1—C13—Cd1 | 55.04 (14) |
N1—Cd1—O2 | 156.67 (7) | C14—C13—Cd1 | 171.5 (2) |
O3—Cd1—O2 | 91.47 (7) | C15—C14—C23 | 119.8 (3) |
N2—Cd1—O2 | 85.51 (7) | C15—C14—C13 | 116.8 (3) |
O3i—Cd1—C13 | 88.87 (7) | C23—C14—C13 | 123.4 (3) |
O1—Cd1—C13 | 26.80 (7) | C14—C15—C16 | 121.4 (3) |
N1—Cd1—C13 | 144.11 (8) | C14—C15—H15A | 119.3 |
O3—Cd1—C13 | 116.46 (8) | C16—C15—H15A | 119.3 |
N2—Cd1—C13 | 92.32 (8) | C17—C16—C15 | 119.9 (3) |
O2—Cd1—C13 | 26.95 (7) | C17—C16—H16A | 120.0 |
O3i—Cd1—O4i | 49.13 (6) | C15—C16—H16A | 120.0 |
O1—Cd1—O4i | 74.60 (6) | C16—C17—C18 | 121.0 (3) |
N1—Cd1—O4i | 77.68 (7) | C16—C17—H17A | 119.5 |
O3—Cd1—O4i | 113.50 (6) | C18—C17—H17A | 119.5 |
N2—Cd1—O4i | 139.51 (7) | C17—C18—C19 | 120.7 (3) |
O2—Cd1—O4i | 118.02 (6) | C17—C18—C23 | 119.6 (3) |
C13—Cd1—O4i | 96.75 (7) | C19—C18—C23 | 119.7 (3) |
O3i—Cd1—Cd1i | 37.58 (5) | C20—C19—C18 | 120.9 (3) |
O1—Cd1—Cd1i | 115.89 (5) | C20—C19—H19A | 119.5 |
N1—Cd1—Cd1i | 108.34 (6) | C18—C19—H19A | 119.5 |
O3—Cd1—Cd1i | 36.79 (4) | C19—C20—O5 | 119.2 (3) |
N2—Cd1—Cd1i | 133.75 (5) | C19—C20—C21 | 120.0 (3) |
O2—Cd1—Cd1i | 91.87 (5) | O5—C20—C21 | 120.8 (3) |
C13—Cd1—Cd1i | 105.66 (6) | C22—C21—C20 | 120.9 (3) |
O4i—Cd1—Cd1i | 81.11 (4) | C22—C21—H21A | 119.5 |
C13—O1—Cd1 | 98.15 (17) | C20—C21—H21A | 119.5 |
C13—O2—Cd1 | 86.96 (16) | C21—C22—C23 | 121.0 (3) |
C24—O3—Cd1i | 107.21 (16) | C21—C22—H22A | 119.5 |
C24—O3—Cd1 | 134.76 (17) | C23—C22—H22A | 119.5 |
Cd1i—O3—Cd1 | 105.62 (7) | C22—C23—C18 | 117.4 (3) |
C24—O4—Cd1i | 81.45 (16) | C22—C23—C14 | 124.3 (3) |
C20—O5—H5B | 109.5 | C18—C23—C14 | 118.3 (3) |
C29—O6—H6B | 109.5 | O4—C24—O3 | 121.0 (3) |
C1—N1—C12 | 117.9 (2) | O4—C24—C25 | 120.7 (3) |
C1—N1—Cd1 | 126.5 (2) | O3—C24—C25 | 118.3 (2) |
C12—N1—Cd1 | 115.64 (17) | C34—C25—C26 | 120.2 (3) |
C10—N2—C11 | 118.4 (2) | C34—C25—C24 | 117.8 (3) |
C10—N2—Cd1 | 126.87 (19) | C26—C25—C24 | 122.0 (2) |
C11—N2—Cd1 | 114.69 (16) | C27—C26—C25 | 124.9 (3) |
N1—C1—C2 | 123.5 (3) | C27—C26—C31 | 116.8 (3) |
N1—C1—H1A | 118.3 | C25—C26—C31 | 118.3 (2) |
C2—C1—H1A | 118.3 | C28—C27—C26 | 121.5 (3) |
C3—C2—C1 | 119.0 (3) | C28—C27—H27A | 119.2 |
C3—C2—H2A | 120.5 | C26—C27—H27A | 119.2 |
C1—C2—H2A | 120.5 | C27—C28—C29 | 121.1 (3) |
C2—C3—C4 | 119.6 (3) | C27—C28—H28A | 119.4 |
C2—C3—H3A | 120.2 | C29—C28—H28A | 119.4 |
C4—C3—H3A | 120.2 | O6—C29—C30 | 123.7 (3) |
C3—C4—C12 | 117.9 (3) | O6—C29—C28 | 116.8 (3) |
C3—C4—C5 | 123.0 (3) | C30—C29—C28 | 119.5 (3) |
C12—C4—C5 | 119.1 (3) | C29—C30—C31 | 121.1 (3) |
C6—C5—C4 | 121.9 (3) | C29—C30—H30A | 119.4 |
C6—C5—H5A | 119.1 | C31—C30—H30A | 119.4 |
C4—C5—H5A | 119.1 | C32—C31—C30 | 121.1 (3) |
C5—C6—C7 | 120.8 (3) | C32—C31—C26 | 119.0 (3) |
C5—C6—H6A | 119.6 | C30—C31—C26 | 119.9 (3) |
C7—C6—H6A | 119.6 | C33—C32—C31 | 121.3 (3) |
C8—C7—C11 | 117.5 (3) | C33—C32—H32A | 119.4 |
C8—C7—C6 | 123.2 (3) | C31—C32—H32A | 119.4 |
C11—C7—C6 | 119.3 (3) | C32—C33—C34 | 119.9 (3) |
C9—C8—C7 | 120.4 (3) | C32—C33—H33A | 120.1 |
C9—C8—H8A | 119.8 | C34—C33—H33A | 120.1 |
C7—C8—H8A | 119.8 | C25—C34—C33 | 121.3 (3) |
C8—C9—C10 | 118.8 (3) | C25—C34—H34A | 119.3 |
C8—C9—H9A | 120.6 | C33—C34—H34A | 119.3 |
C10—C9—H9A | 120.6 | H1—O1W—H2 | 95.3 |
N2—C10—C9 | 123.1 (3) | H3—O2W—H4 | 112.8 |
N2—C10—H10A | 118.5 | ||
O3i—Cd1—O1—C13 | 95.96 (16) | C3—C4—C12—N1 | −1.3 (4) |
N1—Cd1—O1—C13 | −151.16 (15) | C5—C4—C12—N1 | 179.1 (3) |
O3—Cd1—O1—C13 | 36.3 (2) | C3—C4—C12—C11 | 176.6 (3) |
N2—Cd1—O1—C13 | −76.40 (17) | C5—C4—C12—C11 | −3.0 (4) |
O2—Cd1—O1—C13 | 0.94 (15) | N2—C11—C12—N1 | −0.2 (4) |
O4i—Cd1—O1—C13 | 144.66 (17) | C7—C11—C12—N1 | 178.4 (2) |
Cd1i—Cd1—O1—C13 | 72.82 (16) | N2—C11—C12—C4 | −178.1 (2) |
O3i—Cd1—O2—C13 | −84.52 (16) | C7—C11—C12—C4 | 0.4 (4) |
O1—Cd1—O2—C13 | −0.94 (15) | Cd1—O2—C13—O1 | 1.6 (3) |
N1—Cd1—O2—C13 | 87.3 (2) | Cd1—O2—C13—C14 | −175.2 (2) |
O3—Cd1—O2—C13 | −158.93 (16) | Cd1—O1—C13—O2 | −1.8 (3) |
N2—Cd1—O2—C13 | 104.13 (16) | Cd1—O1—C13—C14 | 175.09 (19) |
O4i—Cd1—O2—C13 | −41.20 (17) | O3i—Cd1—C13—O2 | 95.57 (16) |
Cd1i—Cd1—O2—C13 | −122.12 (15) | O1—Cd1—C13—O2 | 178.3 (3) |
O3i—Cd1—O3—C24 | −135.2 (3) | N1—Cd1—C13—O2 | −137.55 (16) |
O1—Cd1—O3—C24 | −71.9 (3) | O3—Cd1—C13—O2 | 23.67 (17) |
N1—Cd1—O3—C24 | 114.5 (3) | N2—Cd1—C13—O2 | −75.37 (16) |
N2—Cd1—O3—C24 | 41.6 (3) | O4i—Cd1—C13—O2 | 144.16 (15) |
O2—Cd1—O3—C24 | −44.1 (3) | Cd1i—Cd1—C13—O2 | 61.53 (16) |
C13—Cd1—O3—C24 | −54.6 (3) | O3i—Cd1—C13—O1 | −82.76 (16) |
O4i—Cd1—O3—C24 | −165.6 (2) | N1—Cd1—C13—O1 | 44.1 (2) |
Cd1i—Cd1—O3—C24 | −135.2 (3) | O3—Cd1—C13—O1 | −154.66 (15) |
O3i—Cd1—O3—Cd1i | 0.0 | N2—Cd1—C13—O1 | 106.30 (16) |
O1—Cd1—O3—Cd1i | 63.32 (13) | O2—Cd1—C13—O1 | −178.3 (3) |
N1—Cd1—O3—Cd1i | −110.30 (9) | O4i—Cd1—C13—O1 | −34.17 (16) |
N2—Cd1—O3—Cd1i | 176.82 (8) | Cd1i—Cd1—C13—O1 | −116.79 (15) |
O2—Cd1—O3—Cd1i | 91.16 (8) | O2—C13—C14—C15 | 148.9 (3) |
C13—Cd1—O3—Cd1i | 80.68 (9) | O1—C13—C14—C15 | −28.0 (4) |
O4i—Cd1—O3—Cd1i | −30.40 (10) | O2—C13—C14—C23 | −28.9 (4) |
O3i—Cd1—N1—C1 | 4.9 (3) | O1—C13—C14—C23 | 154.2 (3) |
O1—Cd1—N1—C1 | −94.0 (2) | C23—C14—C15—C16 | 2.0 (4) |
O3—Cd1—N1—C1 | 81.1 (2) | C13—C14—C15—C16 | −175.9 (3) |
N2—Cd1—N1—C1 | 176.0 (3) | C14—C15—C16—C17 | 0.0 (4) |
O2—Cd1—N1—C1 | −166.4 (2) | C15—C16—C17—C18 | −2.0 (4) |
C13—Cd1—N1—C1 | −115.8 (2) | C16—C17—C18—C19 | −178.0 (3) |
O4i—Cd1—N1—C1 | −31.4 (2) | C16—C17—C18—C23 | 1.9 (4) |
Cd1i—Cd1—N1—C1 | 44.8 (2) | C17—C18—C19—C20 | 180.0 (3) |
O3i—Cd1—N1—C12 | −176.18 (17) | C23—C18—C19—C20 | 0.1 (4) |
O1—Cd1—N1—C12 | 84.91 (19) | C18—C19—C20—O5 | 178.9 (2) |
O3—Cd1—N1—C12 | −99.96 (18) | C18—C19—C20—C21 | −1.6 (4) |
N2—Cd1—N1—C12 | −5.04 (18) | C19—C20—C21—C22 | 0.9 (4) |
O2—Cd1—N1—C12 | 12.6 (3) | O5—C20—C21—C22 | −179.6 (3) |
C13—Cd1—N1—C12 | 63.1 (2) | C20—C21—C22—C23 | 1.2 (4) |
O4i—Cd1—N1—C12 | 147.59 (19) | C21—C22—C23—C18 | −2.5 (4) |
Cd1i—Cd1—N1—C12 | −136.24 (17) | C21—C22—C23—C14 | 179.5 (3) |
O1—Cd1—N2—C10 | 61.9 (2) | C17—C18—C23—C22 | −178.0 (3) |
N1—Cd1—N2—C10 | −177.1 (2) | C19—C18—C23—C22 | 1.9 (4) |
O2—Cd1—N2—C10 | 9.8 (2) | C17—C18—C23—C14 | 0.2 (4) |
C13—Cd1—N2—C10 | 35.9 (2) | C19—C18—C23—C14 | −180.0 (2) |
O4i—Cd1—N2—C10 | 139.1 (2) | C15—C14—C23—C22 | 176.0 (3) |
Cd1i—Cd1—N2—C10 | −78.5 (2) | C13—C14—C23—C22 | −6.3 (4) |
O1—Cd1—N2—C11 | −116.08 (18) | C15—C14—C23—C18 | −2.1 (4) |
N1—Cd1—N2—C11 | 4.91 (17) | C13—C14—C23—C18 | 175.7 (2) |
O2—Cd1—N2—C11 | −168.20 (18) | Cd1i—O4—C24—O3 | 9.9 (2) |
C13—Cd1—N2—C11 | −142.10 (18) | Cd1i—O4—C24—C25 | −170.3 (3) |
O4i—Cd1—N2—C11 | −38.9 (2) | Cd1i—O3—C24—O4 | −12.9 (3) |
Cd1i—Cd1—N2—C11 | 103.51 (17) | Cd1—O3—C24—O4 | 121.9 (3) |
C12—N1—C1—C2 | −0.1 (4) | Cd1i—O3—C24—C25 | 167.38 (19) |
Cd1—N1—C1—C2 | 178.8 (2) | Cd1—O3—C24—C25 | −57.8 (4) |
N1—C1—C2—C3 | −1.8 (5) | O4—C24—C25—C34 | −43.3 (4) |
C1—C2—C3—C4 | 2.1 (5) | O3—C24—C25—C34 | 136.4 (3) |
C2—C3—C4—C12 | −0.7 (5) | O4—C24—C25—C26 | 140.3 (3) |
C2—C3—C4—C5 | 178.9 (3) | O3—C24—C25—C26 | −40.0 (4) |
C3—C4—C5—C6 | −176.8 (3) | C34—C25—C26—C27 | 176.1 (3) |
C12—C4—C5—C6 | 2.8 (5) | C24—C25—C26—C27 | −7.6 (4) |
C4—C5—C6—C7 | 0.2 (5) | C34—C25—C26—C31 | −3.4 (4) |
C5—C6—C7—C8 | 177.5 (3) | C24—C25—C26—C31 | 172.8 (2) |
C5—C6—C7—C11 | −2.8 (4) | C25—C26—C27—C28 | 178.1 (3) |
C11—C7—C8—C9 | 0.5 (5) | C31—C26—C27—C28 | −2.4 (4) |
C6—C7—C8—C9 | −179.9 (3) | C26—C27—C28—C29 | 0.1 (4) |
C7—C8—C9—C10 | −1.1 (5) | C27—C28—C29—O6 | −178.7 (3) |
C11—N2—C10—C9 | 0.4 (4) | C27—C28—C29—C30 | 1.5 (5) |
Cd1—N2—C10—C9 | −177.5 (2) | O6—C29—C30—C31 | 179.5 (3) |
C8—C9—C10—N2 | 0.7 (5) | C28—C29—C30—C31 | −0.7 (4) |
C10—N2—C11—C7 | −1.0 (4) | C29—C30—C31—C32 | 179.1 (3) |
Cd1—N2—C11—C7 | 177.1 (2) | C29—C30—C31—C26 | −1.6 (4) |
C10—N2—C11—C12 | 177.4 (2) | C27—C26—C31—C32 | −177.7 (2) |
Cd1—N2—C11—C12 | −4.4 (3) | C25—C26—C31—C32 | 1.9 (4) |
C8—C7—C11—N2 | 0.6 (4) | C27—C26—C31—C30 | 3.1 (4) |
C6—C7—C11—N2 | −179.0 (3) | C25—C26—C31—C30 | −177.3 (2) |
C8—C7—C11—C12 | −177.9 (3) | C30—C31—C32—C33 | 179.6 (3) |
C6—C7—C11—C12 | 2.5 (4) | C26—C31—C32—C33 | 0.3 (4) |
C1—N1—C12—C4 | 1.7 (4) | C31—C32—C33—C34 | −1.1 (5) |
Cd1—N1—C12—C4 | −177.4 (2) | C26—C25—C34—C33 | 2.7 (4) |
C1—N1—C12—C11 | −176.2 (2) | C24—C25—C34—C33 | −173.7 (3) |
Cd1—N1—C12—C11 | 4.7 (3) | C32—C33—C34—C25 | −0.4 (5) |
Symmetry code: (i) −x+1, −y+1, −z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1···O5ii | 0.85 | 2.15 | 2.934 (3) | 154 |
O1W—H2···O1iii | 0.85 | 2.03 | 2.872 (3) | 170 |
O2W—H3···O1W | 0.85 | 1.96 | 2.801 (4) | 170 |
O2W—H4···O2 | 0.85 | 2.08 | 2.883 (3) | 156 |
O5—H5B···O4iv | 0.82 | 1.84 | 2.664 (3) | 176 |
O6—H6B···O2Wv | 0.82 | 1.91 | 2.728 (4) | 180 |
Symmetry codes: (ii) −x+1, y−1/2, −z+3/2; (iii) x, −y+3/2, z+1/2; (iv) −x+1, y+1/2, −z+3/2; (v) −x+2, y−1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | [Cd2(C11H7O3)4(C12H8N2)2]·4H2O |
Mr | 1405.96 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 11.7382 (11), 15.1433 (14), 18.2059 (13) |
β (°) | 116.430 (4) |
V (Å3) | 2897.9 (4) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.81 |
Crystal size (mm) | 0.28 × 0.21 × 0.18 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.804, 0.868 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 20423, 5096, 4064 |
Rint | 0.037 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.028, 0.063, 1.03 |
No. of reflections | 5096 |
No. of parameters | 406 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.30, −0.41 |
Computer programs: SMART (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1···O5i | 0.8500 | 2.1500 | 2.934 (3) | 154.00 |
O1W—H2···O1ii | 0.8500 | 2.0300 | 2.872 (3) | 170.00 |
O2W—H3···O1W | 0.8500 | 1.9600 | 2.801 (4) | 170.00 |
O2W—H4···O2 | 0.8500 | 2.0800 | 2.883 (3) | 156.00 |
O5—H5B···O4iii | 0.8200 | 1.8400 | 2.664 (3) | 176.00 |
O6—H6B···O2Wiv | 0.8200 | 1.9100 | 2.728 (4) | 180.00 |
Symmetry codes: (i) −x+1, y−1/2, −z+3/2; (ii) x, −y+3/2, z+1/2; (iii) −x+1, y+1/2, −z+3/2; (iv) −x+2, y−1/2, −z+3/2. |
Acknowledgements
This work was supported by the start-up fund for PhDs in Natural Scientific Research of Zhengzhou University of Light Industry (Nos. 2007BSJJ001 and 20801049).
References
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Metallosupramolecular species built from transition metal ions and organic bridging ligands have been rapidly developed in recent years because of their fascinating structural diversities and potential applications as functional materials (Barnett & Champness, 2003; Comba & Schiek, 2003; Telfer & Kuroda, 2003; Robin & Fromm, 2006; Tranchemontagne et al., 2009). The effective and facile approach for the synthesis of such complexes is still the appropriate choice of well designed organic ligands as bridges or terminal groups with metal ions as nodes. Among various ligands, the versatile carboxylic acid ligands, especially for the benzene- and naphthalene-based di- and multi-carboxylic acids, have been most widely employed in the preparation of various CdII–carboxylate complexes (Marsh, 2004; Paz & Klinowski, 2004; Qin et al., 2008; Shi et al., 2005; Wu et al., 2006; Xu et al., 2005). In contrast, the skillful use of monocarboxylic acid ligands with the naphthalene skeleton to construct functional CdII–carboxylate compounds has been less investigated to date (Bania et al., 2007; Liu et al., 2006). In addition, the introduction of 2,2'-bipyridyl-like bidentate chelating molecules, such as 1,10-phenanthroline or 2,2'-bipyridine, as an auxiliary co-ligand into the reaction systems involving carboxylic acids usually leads to new products and commonly reduces dimensionality of the networks formed (Ye et al., 2005). We report here the crystal structure of a CdII complex with mixed 2-naphthol-5-carboxylic acid and 1,10-phenanthroline as ligands.
The structure of the title complex consists of a centrosymmetric dinuclear unit and four lattice water molecules. The CdII center is six-coordinated in an distorted octahedral geometry, by two nitrogen donors atoms from one phenanthroline ligand and four O-atoms from three 2-naphthol-5-carboxylate ligands. For 2-naphthol-5-carboxylate, there exist two different kinds of coordination modes with the CdII center, namely µ1-η1:η1-chelating and µ2-η2:η0-bridging modes. In this manner two CdIIcenter are connected to form a four-membered ring [Cd(1)–O(3)–Cd(1 A)–O(3 A)] with the Cd(1)···Cd(1 A) separation of 3.671 (1) Å (symmetry operation (A) = 1 - x, 1 - y, 1 - z).