(CN3H6)2·Zn(HPO3)2: An open-framework zincophosphite built up from polyhedral 12-rings

Abstract

The solution-mediated synthesis and single crystal structure of (CN3H6)2·Zn(HPO3)2 are reported. This phase is built up from a three-dimensional framework of vertex-linked ZnO4 and HPO3 building units encapsulating the extra-framework guanidinium cations. The structure is stabilised by template-to-framework hydrogen bonding. The inorganic framework contains polyhedral 12-rings and shows a surprising similarity to those of some known organically-templated zinc phosphates.