Synthesis of phosphido-bridged ruthenium–manganese complexes; X-ray crystal structures of [RuMn(µ-H)(µ-PPh₂)(η⁵-C₅H₅)(CO)₅], [Ru₂(µ-H)(µ-PPh₂)(η⁵-C₅H₅)₂(CO)₂] and [RuMn₂(µ-H)(µ-PPh₂)₂(η⁵-C₅H₅)(CO)₉]

Abstract

The complex [RuMn(η5-C5H5)(CO)7]1 has been synthesised in 70% yield from the reaction of [Ru(η5-C5H5)(CO)2I] with Na[Mn(CO)5]. Photolytic reaction of 1 with PPh2H gives the new complexes [RuMn(µ-H)(µ-PPh2)(η5-C5H5)(CO)5]2, [Mn2(µ-H)(µ-PPh2)(CO)7(PPh2H)]3, trans- and cis-[Ru2(µ-H)(µ-PPh2)(η5-C5H5)2(CO)2]4a and b, [RuMn2(µ-H)(µ-PPh2)2(η5-C5H5)(CO)9]5 and [RuMn2(µ-H)(µ-PPh2)2(η5-C5H5)(CO)8(PPh2H)]6 together with the known complexes [Mn2(µ-H)(µ-PPh2)(CO)8] and [Ru2(η5-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.