Linkage isomerism for 4-methylimidazole and a new coordination mode of pyrazine-2,3-dicarboxylate ligand in {[Cd(pzdc)(4-mim)(5-mim)(2)]center dot 1/2H(2)O}(n) coordination polymer

YEŞİLEL O. Z., Gunay G., Mutlu A., Olmez H., Buyukgungor O.

INORGANIC CHEMISTRY COMMUNICATIONS, vol.13, no.10, pp.1173-1177, 2010 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 10
  • Publication Date: 2010
  • Doi Number: 10.1016/j.inoche.2010.06.042
  • Journal Name: INORGANIC CHEMISTRY COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1173-1177
  • Keywords: Linkage isomerism, Coordination polymer, Pyrazine-2,3-dicarboxylate complex, Cadmium complex, METAL-ORGANIC FRAMEWORK, MAGNETIC-PROPERTIES, CRYSTAL-STRUCTURE, (2,3-PYRAZINEDICARBOXYLATO)COPPER(II) HYDROCHLORIDE, 2,3-PYRAZINEDICARBOXYLIC ACID, STRUCTURAL-CHARACTERIZATION, NONCOVALENT INTERACTIONS, GAS-ADSORPTION, COMPLEXES, PZDC
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

A novel one dimensional coordination polymer of Cd(II)-pyrazine-2,3-dicarboxylate with a new coordination mode of pyrazine-2,3-dicarboxylate ligand (pzdc), {[Cd(pzdc)(4-mim)(5-mim)(2)]center dot 1/2H(2)O}(n)) (1) (4(5)-methylimidazole = 4 (5)-mim), has been synthesized and characterized by elemental, thermal analysis, IR spectrum and single crystal X-ray diffraction technique. In complex 1, the Cd(II) ion has a distorted octahedral geometry, in which the pzdc moiety acts as a bridging ligand. Linkage isomerism of the coordinated 4(5)-methylimidazole ligand was observed in 1. The two adjacent one-dimensional chains connected by interchain hydrogen bonds among the N-H groups of methylimidazoles and carboxylate oxygens of pzdc, leading to a three-dimensional framework. The hydrogen bonds account for the coexistence of two unique coordination forms of methylimidazoles in the same coordination sphere. (C) 2010 Elsevier B.V. All rights reserved.