A novel two‐dimensional cadmium(II) complex: poly[diaquatris(μ4‐cyclohexane‐1, 4‐dicarboxylato)bis[2‐(pyridin‐4‐yl)‐1H‐benzimidazole]tricadmium(II). Issue 5 (8th April 2015)

• Record Type: Journal Article
• Authors: Yang, Xiu‐Hong; Yang, Ming‐Xing; Chen, Li‐Juan; Guo, Jing; Lin, Shen
• Is Part Of: Acta crystallographica. Volume 71:Issue 5(2015:May)
• Page Start: 369
• Page End: 373
• Publication Date: 2015-04-08
• Subjects: Crystallography -- Periodicals; Crystals -- Periodicals; 548.3
• DOI: 10.1107/S2053229615005823
• Languages: English
• ISSNs: 2053-2296

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>The title compound, [Cd<sub>3</sub>(C<sub>8</sub>H<sub>10</sub>O<sub>4</sub>)<sub>3</sub>(C<sub>12</sub>H<sub>9</sub>N<sub>3</sub>)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]<sub><italic>n</italic></sub> or [Cd<sub>3</sub>(chdc)<sub>3</sub>(4‐PyBIm)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]<sub><italic>n</italic></sub>, was synthesized hydrothermally from the reaction of Cd(CH<sub>3</sub>COO)<sub>2</sub>·2H<sub>2</sub>O with 2‐(pyridin‐4‐yl)‐1<italic>H</italic>‐benzimidazole (4‐PyBIm) and cyclohexane‐1, 4‐dicarboxylic acid (1, 4‐chdcH<sub>2</sub>). The asymmetric unit consists of one and a half Cd<sup>II</sup> cations, one 4‐PyBIm ligand, one and a half 1, 4‐chdc<sup>2−</sup> ligands and one coordinated water molecule. The central Cd<sup>II</sup> cation, located on an inversion centre, is coordinated by six carboxylate O atoms from six 1, 4‐chdc<sup>2−</sup> ligands to complete an elongated octahedral coordination geometry. The two terminal rotationally symmetric Cd<sup>II</sup> cations each exhibits a distorted pentagonal–bipyramidal geometry, coordinated by one N atom from 4‐PyBIm, five O atoms from three 1, 4‐chdc<sup>2−</sup> ligands and one O atom from an aqua ligand. The 1, 4‐chdc<sup>2−</sup> ligands possess two conformations, <italic>i.e.</italic><italic>e</italic>, <italic>e</italic>‐<italic>trans</italic>‐chdc<sup>2−</sup> and <italic>e</italic>, <italic>a</italic>‐<italic>cis</italic>‐chdc<sup>2−</sup>. The <italic>cis</italic>‐1, 4‐chdc<sup>2−</sup> ligands bridge the Cd<sup>II</sup> cations to form a trinuclear {Cd<sub>3</sub>}‐based chain along the <italic>b</italic> axis, while the <italic>trans</italic>‐1, 4‐chdc<sup>2−</sup> ligands further link adjacent one‐dimensional chains to construct an interesting two‐dimensional network.</p> </abstract>