Syntheses, structures, and reactivities of the sulfur-bridged trinuclear complexes [(L)Ru(CO)(PPh3)]2(.mu.-MS4) (L = PhNCHS, CH2CH2(C5H4N), CH2CH2C(O)OMe; M = Mo, W). Photochemical and chemical reactions and isolation of a trinuclear complex having a coordinatively unsaturated ruthenium atom

Syntheses, structures, and reactivitics of the title compounds are reported. [(PhNCHS)Ru(CO)(PPh 3 )] 2 (μ-MS 4 ).2(CH 3 ) 2 CO (M=Mo (1) and M=W (3)) undergoes photochemical reaction in the presence of pyridine (py) to afford [(PhNCHS)Ru-(py) 2 ] 2 (μ-MS 4 ) and ([PhNCHS)Ru(py) 2 ] (μ-MS 4 ) [(PPh 3 )(CO)Ru(PhNCHS)]