Solution mediated synthesis and structure of a three-dimensional zinc arsenate, [NH3(CH2)3NH2(CH2)2NH3][Zn4(AsO4)3(HAsO4)]·H2O, with intersecting helical channels

Abstract

The synthesis and single crystal structure of a zinc arsenate, [NH₃(CH₂)₃NH₂(CH₂)₂NH₃][Zn₄(AsO₄)₃(HAsO₄)]·H₂O, I, is presented. The structure of I is built from a network of ZnO₄, AsO₄ and HAsO₄ tetrahedral units, connected through their vertices. The connectivity gives rise to 3-, 4- and 5-membered rings, which are joined together forming a one-dimensional column. The columns are connected forming the inter-connected helical channels bound by 8-T atoms (T = Zn and As) in the bc plane.