Group II metal-directed structural variation of coordination compounds derived from 5-[N-acetato(4-pyridyl)]tetrazolate ligand

摘要

Reactions of MCl_2 (M = Mg, Ca, Sr, Ba) and a4-ptz (a4-ptz = 5-[N-acetato (4-pyridyl)] tetrazolate) potas_sium salt in water, respectively, and produced four new complexes [Mg(H_2O)_6] (a4-ptz)_2 _ 2H_2O (1), [Ca(a4-ptz)_2(H_2O)_2]_n _ 2nH_2O(2), [Sr(a4-ptz)_2(H_20)_2]_n _ 2nH_2O (3), [Ba_4(a4-ptz)_8(H_2O)_8]_n _ 4nH_20 (4). These compounds were structurally characterized by elemental analysis, IR spectroscopy and single-crys_tal X-ray diffraction. Compound 1 has mononuclear structure bearing distinct intermolecular hydrogen-bond interactions to form a three-dimensional°supramolecular network. While compounds 2-4 have one-dimensional polymeric chains that are bridged by two water molecules linker, respectively. The luminescence properties of 1-4 were investigated at room temperature in the solid state.