Hydrothermal synthesis, crystal structure and thermal stability of a new 2D layered metal(II) phosphonate: [NH3CH2CH2NH3][Fe2(O3PCH(OH)CO2)2(H2O)2]·2H2O

Abstract

In the presence of ethylenediamine template agents, a metal(II) phosphonate, [NH3CH2CH2NH3][Fe2(O3PCH(OH)CO2)2(H2O)2] · 2H2O (1) has been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction as well as infrared spectroscopy, elemental analysis and thermogravimetric analysis. The compound crystallines in the monoclinic space group P21/n: Crystal data for 1: a = 8.4523(8) Å, b = 9.8196(9) Å, c = 10.9217(10) Å, β = 105.9500(10)°, V = 871.58(14) Å, Z = 2, D c = 2.103 g cm−3, R 1 = 0.0290, wR 2 = 0.0811. The Fe (II) cation is octahedrally coordinated by six oxygen atoms from the three ligands and one coordinated water molecule to form a 2D layered structure with a one-dimensional channel system in the a-axis direction.