Abstract
Two copper(II)/cobalt(II) coordination polymers formulated as [Co(3-bptzp)(1,4-BDC)(1,4-H2BDC)0.5] (1) and [Cu(3-bptzp)(1,4-BDC)] (2) have been hydrothermally synthesized by using a flexible bis(pyridyl-tetrazole) ligand (3-bptzp = 1,4-bis(5-(3-pyridyl)tetrazolyl)propane) and an aromatic dicarboxylic acid (1,4-H2BDC = 1,4-benzenedicarboxylic acid) as mixed ligands. Both complexes have been characterized by single-crystal X-ray diffraction, elemental analyses, infrared spectroscopy and powder X-ray diffraction. There are two different types of 2D layered network in the structures of both complexes. In complex 1, the 2D layered network is formed by 1,4-BDC anions and neutral 1,4-H2BDC ligands, while the 3-bptzp ligands bridge the adjacent two Co(II) atoms to form a [Co2(3-bptzp)2] ring. In complex 2, adjacent Cu(II) atoms are bridged by 1,4-BDC anions to form a 1D [Cu(1,4-BDC)]n chain, and then adjacent 1D [Cu(1,4-BDC)]n chains are further linked together by the 3-bptzp ligands to generate a 2D layered network. The electrochemical behaviors and dye adsorption properties of both complexes have been studied. Two new coordination polymers constructed from a flexible bis(pyridyl-tetrazole) ligand have been hydrothermally synthesized. There exist two different types of 2D layered structures in the complexes 1 and 2. In addition, the electrochemical behaviors and dye adsorption properties of complexes 1–2 have been studied.
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