Reactions of MoCl5/MoO2Cl2 with 4-phenylimidazole-2-thiol/2-thiazoline-2-thiol in CH3CN solvent in 1:1/1:2 molar ratios have been carried out at room temperature. Products obtained MoCl3(C9H7N2S)(CH3CN),[1]; MoCl2(C9H7N2S)(CH3CN), [2]; Mo2OCl4(C9H8N2S)2, [3] and Mo4O2Cl12(C9H7N2S)4, [4]; MoO2Cl3(C3H5NS2)2, [5] and Mo2O4Cl3(C3H5NS2)2, [6] have been analyzed and characterized by elemental analysis, FTIR, 1H NMR and LC-MS techniques. Compounds being moisture and air sensitive, these have been prepared in inert atmosphere using vacuum line and liquid nitrogen cooled traps. Fragments obtained in LC-MS spectra support the formulae derived.