Three Mn(II) supramolecular coordination complexes containing carboxylate-tetrazolate ligands

Three novel complexes [Mn(atza)(2)(H2O)(4)] (1), [Mn(nptza)(2)(CH3OH)(4)] (2), and [Mn(a4-ptz)(2)(H2O)(2)](n) center dot 2nH(2)O] (3) [atza = 5-aminotetrazole-1-acetato, nptza = 5-[(4-nitryl) phenyl] tetrazole-1-acetato, a4-ptz = 5-[N-acetato(4-pyridyl)] tetrazole] containing carboxylate-tetrazolate ligands have been synthesized and characterized by element analysis. X-ray crystallography shows that complexes 1 and 2 both contain mononuclear structure. The complex 3 is a 1D polymeric chain structure. Compounds 1-3 are self-assembled to form supramolecular structures through hydrogen bonds interactions. (C) 2008 Elsevier B. V. All rights reserved.