An open-framework zincoborate formed by Zn₆B₁₂O₂₄ clusters

Abstract

A novel zincoborate, Zn(H₂O)B₂O4·xH2O (x ≈ 0.12), I, with open architecture has been synthesized hydrothermally. The 3-dimensional structure is built up of Zn₆B₁₂O₂₄ clusters formed by the capping of the polycyclic borate anion, B₁₂O₂₄^12-, by Zn₃O₃ clusters. The open-framework structure of I has one-dimensional 8-membered channels wherein the water molecules reside. Formation of trimeric Zn₃O₃ clusters as well as the presence of boron in dual coordination, both triangular and tetrahedral, are important structural features of this new zincoborate.