Synthesis and characterization of a new octamolybdate (NH4)4[Mo8O24(C3H2O2)2] · 4H2O

Abstract

A new complex with the formula (NH 4 ) 4 [Mo 8 O 24 (C 3 H 2 O 2 ) 2 ] ⋅ 4H 2 O (1) has been synthesized and characterized by single crystal X ray diffraction and infrared spectrum. The complex is small yellow crystal and space group P 1 with a = 9.9869(18) Å, b = 10.030(19) Å, c = 10.366(19) Å, α = 91.68(3)°, β = 98.94(3)°, γ = 119.37(2)°, V = 887(3) Å 3 , and Z = 1. The complex contains two malonic acid ligands bonded to the γ Mo 8ions which consist of eight MoO 6 edge sharing octahedral. In this crystal structure, the octamo lybdate anion is mutually hydrogen bonded by ammonium ions and water molecules.