Crystal structure, thermal stability and photoluminesence properties of five new Zn(II) coordination polymers constructed from mixed ligand; N-donor pyridine ligands and bis(4-carboxylphenyl)phosphinic acid

Abstract

Five new Zn(II) coordination polymers, {[Zn2(HBPO)2(phen)2(H2O)2]·H2O}n (1), [Zn2(BPO)(H2BPO)(phen)4]·2(H2BPO)·4H2O (2), {[Zn(HBPO)(4,4′-bipy)0.5]·H2O}n (3), [Zn(HBPO)(dpe)0.5]n (4) and {[Zn2(HBPO)2(dpp)]·H2O}n (5), constructed from mixed ligand; bis(4-carboxylphenyl)phosphinic acid (H3BPO) and N-donor pyridine ligands (phen, 4,4′-bipy, dpe and dpp), have been synthesized and characterized by single crystal X-ray diffraction, IR spectroscopy and elemental analyses. Intermolecular hydrogen bonds, π- π interaction and other intermolecular interaction are effective in stabilization of the crystal structure of these supramolecular complexes. The thermal stability and luminescence properties of compounds 1–5 in the solid state were studied too.