Reversible reconstructive transition of the [CuZn(CN)4]− framework host induced by guest exchange

Abstract

The framework host [CuZn(CN)₄]⁻, a coordination polymer composed of tetrahedral Cu(I) and Zn(II) ions and CN⁻ bridges, exhibits a reversible reconstructive transition in the solid-state between a cristobalite-like framework and a tridymite-like one induced by guest exchange between water and acetonitrile molecules.