X-ray studies, spectral characterization and thermal behaviour of a two-dimensional Zinc Phosphate templated by Tris (2-aminoethyl) amine [C6H21N4][Zn6(P04)3 (Hp04)3). H20

Abstract

A two-dimensional (2D) layered zinc phosphate hydrate [C6H21N4] [Zn6 (P04)3(HP04)3]. H20, I, was synthesized by reacting Zn2+ ions with tris-(2-aminoethyl) amine phosphate [C6H21N4][P04].5H20. The compound was characterized by powder x-ray diffraction analysis, energy dispersive analysis by x-ray and infrared spectroscopy. The thermal behaviour of compound I was studied under flowing nitrogen and the structure determined by single crystal x-ray crystallography. Compound I crystallizes in the orthorhombic space group Pna2(No. 33), a = 18.785(2), b = 8.2783(7), c = 18. 747(2)Ǻ, volume = 2915.4(4) Å3, z = 4. The structure consists of a network of Zn04, P04 and HP04 tetrahedra which are connected to form a layer with interlamelar region occupied by the protonated amine and water molecules.

Keywords: Metal phosphates, open-framework solids, amine phosphates route, layered structure

Global Journal or Pure and Applied Sciences Vol. 14 (4) 2008: pp. 389-396