P−C Bond Cleavage by a Heterobimetallic Polyhydrido Complex, (C 5 Me 5 )Ru(μ-H) 3 Ir(C 5 Me 5 ). Structure Determination and Fluxional Behavior of a Bridging Phosphido Complex, (C 5 Me 5 )Ru(μ-PPh 2 )(μ-H)(μ-η 1 :η 2 -C 6 H 5 )Ir(C 5 Me 5 )

The heterobimetallic phosphido complex (C 5 Me 5 )Ru(μ-PPh 2 )(μ-H)(μ-η 1:η 2 -C 6 H 5 )Ir(C 5 Me 5 ) ( 2 ) was formed by the reaction of (C 5 Me 5 )Ru(μ-H) 3 Ir(C 5 Me 5 ) ( 1 ) with triphenylphosphine as a result of P−C bond cleavage. The molecular structure of 2 was determined by single-crystal X-ray diffraction studies. The fluxional behavior of the μ-η 1:η 2 -phenyl ligand in 2 was elucidated by means of a variable-temperature 1 H NMR and a selective pulse irradiation method.