Chemistry of the metal carbonyls. Part 82. Synthesis of complexes with bonds between rhodium and the sub-group 6 metals; X -ray crystal structure of [CrRh(µ-CO) 2 (CO) 2 (η-C 5 Me 5 )(η-C 6 H 6 )]

Irradiation with u.v. light of mixtures of [Cr(CO)3(η-arene)](arene = C6H6, C6H3Me3-1,3,5, or C6Me6) and [Rh(CO)2(η-C5Me5)] in tetrahydrofuran (thf) affords the dimetal compounds [CrRh(µ-CO)2(CO)2(η-C5Me5)(η-arene)]; the complex [CrRh(µ-CO)2(CO)2(η-C9H7)(η-C6H3Me3-1,3,5)](C9H7= indenyl) has been similarly prepared from [Rh(CO)2(η-C9H7)] and [Cr(CO)2(thf)(η-C6H3Me3-1,3,5)]. The i.r. and n.m.r. data for these species are reported and discussed in …