Abstract: This paper reports the research on the reactions of a variety of metal ions with dithioacetylacetone in a ethanol medium saturated with HCl The products of the reactions have been characterized by X-ray crystal structure analysis.The result shows that the complex types formed for different metal ions can be classified into three categories which are in coincidence with the division of metal ions according to their Z²/r as a function of (x_s + X_M/(X_s - X_M). In addition,it is found that among the ions used in the examination,the molybdenum is the only one element capable to form the cluster compound under such a specific reaction condition.