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)]

Abstract

Reactions of the thiocarbamoyl-molybdenum complex [Mo(CO) 2 (h 2 -SCNMe 2 )(PPh 3 ) 2 Cl] 1, and ammonium diethyldithiophosphate, NH 4 S 2 P(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 {h 2 -S 2 P(OEt) 2 }(h 2 -SCNMe 2 )(PPh 3 )] b-3, and tris(pyrazoyl-1-yl)borate thiocabamoyl-molybdenum complex [Mo(CO) 2 (h 3 -Tp)(h 2 -SCNMe 2 )(PPh 3 )] 4, respectively. The geometry around the metal atom of compounds b-3 and 4 are capped octahedrons. The aand b-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-1yl)borate ligands coordinate to the molybdenum metal center through the carbon and sulfur and two sulfur atoms, or three nitrogen atoms, respectively. Complexes b-3 and 4 are characterized by X-ray diffraction analyses.