H3N(CH2)2NH3]0.5[BePO4], a beryllophosphate analogue of aluminosilicate zeolite gismondine.

Abstract

Hydrothermally prepared ethylenediammonium beryllophosphate, (C(2)H(10)N(2))(0.5)[BePO(4)], is an analogue of aluminosilicate zeolite gismondine. A three-dimensional network of vertex-sharing BeO(4) and PO(4) tetrahedra [d(av)(Be-O) = 1.618 (3) A, d(av)(P-O) = 1.5246 (14) A and straight theta(av)(Be-O-P) = 139.8 degrees] encapsulates the disordered ethylenediammonium cations in an eight-ring channel system.