In situ solvothermal syntheses of a heteronuclear copper(I)-alkaline metallic tetrazole-based coordination polymer

Abstract

Three novel heteronuclear coordination complexes, namely, [Cu₂K(Mtta)I₂] (1), [Cu₃K(Mtta)₃I] (2) and [Cu₂Na(Mtta)₂(CH₃CN)I] (3) (HMtta = 5-methyl-1H-tetrazole) have been solvothermal synthesized by CuI, MCl [M = K (1) and (2); M = Na (3)], sodium azide and acetonitrile generated via a [3 + 2] cycloaddition reaction of acetonitrile and sodium azide. Single crystal X-ray diffraction reveals that all complexes are three-dimensional (3D) frameworks, where complex 1 is constructed by connecting rare µ₅-N bridging Mtta ligands to Cu–I–K layers, complex 2 is built up by connecting inorganic cationic [Cu₆I₂]⁴⁺ clusters with numerous Mtta ligands, while complex 3 is constructed from open Cu(Mtta) subnets and Na⁺ centers. Furthermore, the luminescence properties of all complexes have been investigated. This work further supplements the mechanism of the Demko-Sharpless reaction in heteronuclear tetrazole-based coordination polymers.