CRYSTAL STRUCTURE AND FLUORESCENCE OF A 2D CADMIUM(II) COORDINATION POLYMER BASED ON FLEXIBLE bis(2-METHYLBENZIMIDAZOLE) AND BENZENEDICARBOXYLATE Co-LIGANDS

Abstract

A new coordination polymer, {[Cd(bbmb)(bdc)]} n (bbmb = 1,1c-(1,4-butanediyl)bis-(2-methylbenzimidazole), H 2 bdc = 1,3-benzenedicarboxylic acid) was synthesized under hydrothermal conditions. The complex was structurally characterized by single crystal X-ray diffraction analyses, infrared spectroscopy (IR), elemental analyses. The compound crystallizes in the monoclinic system, space group P2 1 /c with a = 10.860(6) Å, b = 13.115(7) Å, c = 21.009(9) Å, E = 120.94(2)q, V = 2567(2) Å 3 , Z = 4, C 28 H 26 CdN 4 O 4 , M r = 594.93, D c = 1.540 g/cm 3 , P = = 0.893 mm-1. Each cadmium center is six coordinated with four O atoms from two bdc 2anions, and two N atoms of two bbmb ligands. The complex features a 4-connected 2D (4, 4) sheet with a point symbol {4 2 .6 2 }. Fluorescence properties of the title complex were investigated.