Publication Date:
2013-10-23
Description:
The title coordination polymer, {[Cd(C8H4O4)(C14H14N4)]·C3H7NO}n, was synthesized by solvothermal reaction of metallic cadmium with the semi-rigid neutral ligand 1,4-bis[(1H-imidazol-1-yl)methyl]benzene (bix) and the V-shaped benzene-1,3-dicarboxylic acid (m-H2bdc). The structure exhibits a pseudo-C-centring which is almost fulfilled by the polymeric metal complex but not by the solvent dimethylformamide (DMF) molecules. The asymmetric unit contains two independent CdIIions, twom-bdc2−ligands, one and two half bix ligands, and two solvent DMF molecules. The CdIIions are both five-coordinated by three O atoms from two differentm-bdc2−ligands and two N atoms from two different bix ligands in a distorted square-pyramidal geometry. Them-bdc2−ligands adopt a chelate-monodentate coordination mode, connecting neighboring CdIIions into a zigzag chain parallel to [110]. Adjacent chains are further cross-linked by bix ligands, giving rise to a puckered sheet nearly perpendicular to the chain direction. Thus, each CdIIion is connected to four neighboring CdIIions through twom-bdc2−anions and two bix ligands, giving rise to the final non-interpenetrating uninodal layer with sql (4,4) topology.
Electronic ISSN:
1600-5368
Topics:
Chemistry and Pharmacology
,
Geosciences
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