Inorganic–organic hybrid compounds based on molybdenum oxide chains and tetrazolate-bridged polymeric silver cations

Abstract

Three inorganic–organic compounds based on [Mo_xO_y]ⁿ⁻ chains, [Ag₄(3-pttz)₂Mo₃O₁₀] (1) (3-pttz = 5-(3-pyridyl) tetrazolate), [Ag₄(2-pttz)₂Mo₄O₁₃] (2) (2-pttz = 5-(2-pyridyl) tetrazolate), and [Ag₄(pzttz)₂Mo₄O₁₃] (3) (pzttz = 5-(pyrazinyl) tetrazolate), have been self-assembled, accompanied by in situ formation processes of the 5-substituted tetrazolate ligands under hydrothermal condition. Compound 1 features a 3D framework composed of [Mo₃O₁₀]²⁻ chains cross-linked by [Ag₄(3-pttz)₂]²⁺ belts. Compounds 2 and 3 reveal the 3D structures based on [Mo₄O₁₃]²⁻ chains pillared by silver tetrazolate polymeric chains. The three title compounds represent the first three examples that the tetrazolate ligands are introduced into the backbones of the [Mo_xO_y]ⁿ⁻ anion chains.