Synthesis and x-ray structure characterization of ethylenediammonium tetrathiomolybdate

Abstract

The passage of hydrogen sulphide gas into an aqueous ammonium heptamolybdate solution in the presence of ethylenediamine leads to the formation of stable ethylenediammonium tetrathiomolybdate 1 in good yields. The title compound has been characterized by IR, UV-Vis and elemental analysis and its structure has been determined by single crystal X-ray crystallography, Ethylenediammonium tetrathiomolybdate crystallizes in the orthorhombic space group P2(1)2(1)2(1) With the following unit cell dimensions for C2H10N2S4Mo (M=286.3) a=8.582(5) Angstrom, b=9.276(5) Angstrom, c=11.792(5) Angstrom, alpha = beta = gamma = 90 degrees v = 938.7(8) Angstrom (3), Z=4, D-c=2.026 g.cm(-3). The structure of the title compound consists of tetrahedral tetrathiomolybdate anions, which form an extended three dimensional network in the solid state, with the aid of N-H---S as well as C-H---S hydrogen bonding interactions with the organic cation.