New ruthenium-molybdenum and -tungsten heterodinuclear complexes with trans-styryl ligand

New styryl ruthenium-molybdenum and -tungsten complexes Cp(CO) 3 M-Ru (trans-styryl)(CO)(PPh 3 ) 2 [M=Mo (2), W(3)] have been prepared by the metathetical reactions of Ru(trans-styryl)Cl(CO)(PPh 3 ) 2 with Na[MCp(CO) 3 ]. The reactions of 2 with CO and with PMe 3 give Cp(CO) 3 Mo-Ru(trans-styryl)(CO) 2 (PPh 3 ) 2 (4) and Cp(CO) 3 Mo-Ru(trans-styryl)(CO)(PMe 3 ) 2 (5), respectively. The complexes of 2, 3, 4, and 5 have been characterized by IR, 1 H NMR, 31 P{ 1 H} NMR spectroscopy, and elemental analysis