Oxidative addition of thiols to (CO)3Mo(μ-dppm)2Ru(CO)3 with formation of hydrido, bridged-thiolate complexes (dppm = Ph2PCH2PPh2)

The room temperature reactions of RSH (R = Et, Ph) with (CO)3Mo(μ-dppm)2Ru(CO)3 (1) in toluene yield (CO)2Mo(μ-SR)(μ-CO)(μ-dppm)2Ru(H)(CO) [R = Et (3); Ph (4)], which are characterized by elemental analysis, 1H NMR and IR spectroscopies and, in the case of 3, by X-ray crystallography. The complexes contain a trans,trans-Mo(μ-dppm)2Ru unit with a bridging thiolate, a terminal hydride at the Ru, three terminal CO ligands (two at the Mo, and one at the Ru), and one semi-bridged CO closer to the Mo.