Synthesis and Crystal Structures of the Molybdenum(II) Complexes with the N,N-dimethylthiocarbamoyl Containing Ligand: Crystal Structures of β [Mo(CO)2{η2-S2P(OEt)2}(η2-SCNMe2)(PPh3)] and [Mo(CO)2(η3-Tp)(η2-SCNMe2)(PPh3)]

Reactions of the thiocarbamoyl-molybdenum complex [Mo(CO)₂(η²-SCNMe₂)(PPh₃)₂Cl] 1, and ammonium diethyldithiophosphate, NH₄S₂P(OEt)₂, and potassium tris(pyrazoyl-1-yl)borate, KTp, in dichloromethane at room temperature yielded the seven coordinated diethyldithiophosphate thiocarbamoyl-molybdenum complexe [Mo(CO)₂{η²-S₂P(OEt)₂}(η²-SCNMe₂)(PPh₃)] β-3, and tris(pyrazoyl-1-yl)borate thiocabamoyl-molybdenum complex [Mo(CO)₂(η³-Tp)(η²-SCNMe₂)(PPh₃)] 4, respectively. The geometry around the metal atom of compounds β-3 and 4 are capped octahedrons. The α- and β-isomers are defined to the dithio-ligand and one of the carbonyl ligands in the trans position in former and two carbonyl ligands in the trans position in later. The thiocabamoyl and diethyldithiophosphate or tris(pyrazoyl-1-yl)borate ligands coordinate to the molybdenum metal center through the carbon and sulfur and two sulfur atoms, or three nitrogen atoms, respectively. Complexes β-3 and 4 are characterized by X-ray diffraction analyses. [ABSTRACT FROM AUTHOR]