Three Zn(ii)/Cd(ii)/Mn(ii) coordination polymers based on a 2-hydroxy-N-(1H-tetrazol-5-yl) benzamide ligand: structures, and magnetic and photoluminescence properties

Abstract

Three coordination polymers, {[Zn(L)₂]·H₂O}_n (1), {[Cd(L)₂]·H₂O}_n (2) and {[Mn(L)₂]·H₂O}_n (3) (HL = 2-hydroxy-N-1H-tetrazol-5-ylbenzamide), have been prepared under hydrothermal conditions. X-ray diffraction analysis reveals that compounds 1–3 are isomorphous, showing an interdigitated 3-D framework with 1-D channels. Fluorescence studies show that the emissions of complexes 1–2 are attributed to the ligand π–π* transition. Magnetic studies indicate that compound 3 exhibits antiferromagnetic properties.