SYNTHESIS OF PHOSPHIDO-BRIDGED RUTHENIUM MANGANESE COMPLEXES - X-RAY CRYSTAL-STRUCTURES OF (RUMN(MU-H)(MU-PPH2)-(ETA-5-C5H5)(CO)5), (RU2(MU-H)(MU-PPH2)(ETA-5-C5H5)2(CO)2) AND (RUMN2(MU-H)(MU-PPH2)2(ETA-5-C5H5)(CO)9)

The complex [RuMn(eta-5-C5H5)(CO)7] 1 has been synthesised in 70% yield from the reaction of [Ru(eta-5-C5H5)(CO)2l] with Na[Mn(CO)5]. Photolytic reaction of 1 with PPh2H gives the new complexes [RuMn(mu-H)(mu-PPh2)(eta-5-C5H5)(CO)5] 2, [Mn2(mu-H)(mu-PPh2)(CO)7(PPh2H)] 3, trans- and cis-[Ru2(mu-H)(mu-PPh2)(eta-5-C5H5)2(CO)2] 4a and b, [RuMn2(mu-H)(mu-PPh2)2(eta-5-C5H5)(CO)9] 5 and [RuMn2(mu-H)(mu-PPh2)2(eta-5-C5H5)(CO)8(PPh2H)] 6 together with the known complexes [Mn2(mu-H)(mu-PPh2)(CO)8] and [Ru2(eta-5-C5H5)2(CO)4]. The crystal structures of 2, 4a and 5 have been determined. Structures are proposed for the other new complexes and the mechanism of the photolytic reaction of 1 with PPh2H is discussed.