Structural variation and luminescence properties of d10 metal ions complexes from 5-Aminotetrazolate ligand

Abstract

Three new d10 complexes with 5-aminotetrazolate (5-HATZ), [Zn2(5-ATZ)3(N3)]n (1), {[Cd6(5-ATZ)8Cl5]n·(H2O)4}n (2), and {[Cd12(5-ATZ)12Cl8(N3)4]·2H2O}n (3) have been obtained under hydrothermal conditions and structurally characterized. Single-crystal X-ray structural analyses reveal that complex 1 can be rationalized to be 3D dia topological nets with the metal ZnII centers acting as four-connected nodes and L acting as linkers, and the Schläfli symbol is 66, while 2 exhibits a 3D architecture based on six crystallographically independent hexahedral coordinated CdII centers linked by 5-ATZ anion and Cl anion. Complex 3 also possesses a 3D network linked by 5-ATZ anion, Cl anion as well as N3 anion. The ligand 5-ATZ anion adopts μ1,4-bridging coordination mode in complex 1, μ1,2,3, μ1,2,4, μ1,2,3,4-bridge coordination mode in complex 2, while μ1,2,4, μ1,2,3,4-bridge coordination mode in complex 3. Also, the fluorescent properties of complexes 1 and 2 have been investigated.