Synthesis and characterization of bis(aryldiazenido)molybdenum complexes. Crystal structure of [Mo(NNC6H4Me-p)2(SCH2CH2NH2)2]

The syntheses of several novel bis(aryldiazenido)molybdenum complexes of the type [Mo(NNC6H4R-p)2(aet)2] (aet = aminoethanethiolate, NH2CH2CH2S−; R = H, Me, OMe, F or NO2), from [MoO2(aet)2] and the appropriate p-substituted phenylhydrazine, are described. These compounds have been characterized by conventional spectroscopic methods. The crystal structure of [Mo(NNC6H4Me-p)2(aet)2] has been determined by X-ray diffraction. The molecule has C2 crystallographic symmetry. The tolyldiazenido groups exhibit the singly-bent geometry: MoNN = 171.7(2)°, NNC = 118.4(2)°, MoN = 1.826(2) A, NN = 1.229(3) A.