Subtle difference of [SiMo₁₂O₄₀]⁴⁻ and [PMo₁₂O₄₀]³⁻ inducing two new distinct Keggin-Ag-(1H-Pyrazole) compounds

Abstract

Two new inorganic-organic hybrid compounds based on α-Keggin clusters and Ag-(1H-Pyrazole) subunits, [AgL2]4[SiMo12O40] (1) and [AgL2]3[PMo12O40] (2) (L = pyrazole), have been synthesized under hydrothermal conditions and characterized by single crystal X-ray diffraction. In 1, there are two kinds of chains, the chains linked by two [AgL2]+ clusters and the other linked only by one [AgL2]+, which further connect by sharing [SiMo12O40]4− anions to construct a 2-D layer. In 2, four-supporting [PMo12O40]3− anions are fused by [Ag(1)L2]+ subunits to form a 1-D chain. Through weak interactions of Ag⋯O (3.091 Å) a 2-D supramolecular layer is constructed. Additionally, the electrochemical properties of title compounds and the photocatalytic properties of 2 have been studied.