Two coordination polymers from 2- p-butylphenyl imidazole dicarboxylate: Syntheses, crystal structures, and thermal properties.

By employing a newly designed ligand, 2-( p- tert-butylphenyl)-1 H-imidazole-4,5-dicarboxylic acid (HBuPhIDC) to react with manganese(II) or nickel(II) ions, two coordiantion polymers [Mn(μ-HBuPhIDC)(CHOH)] ( I) and [Ni(μ-HBuPhIDC)(HO)] ( II) have been solvothermally synthesized and structurally characterized by elemental analyses, IR spectroscopy, and single crystal X-ray diffraction. Polymer I shows a 3D framework bearing 1D octagonal channels constructed from left- and right-handed helical chains. Polymer II exhibits an infinite chain structure, which are joined through the π-π interactions and intramolecular hydrogen bonds to form a 3D architecture. The thermal properties of the polymers have been investigated as well. The coordination ability and modes of HBuPhIDC have been investigated from both theoretical and experimental aspects. [ABSTRACT FROM AUTHOR]