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.
