Rhodium pentamethylcyclopentadienyl derivatives

The pentamethylcyclopentadienyl derivatives of rhodium Cp RhL (L = PMe3, C2H4) oxidatively add thiophene preferentially via the C—S activation route compared to that based on the C—H activation [880M1171,94JOM(472)311]. The Tp derivatives by contrast yield mainly the latter. Tp Rh(PEt3) acts almost selectively and forms exclusively 225 (R = Et), whereas Tp Rh(PMc3) forms a major amount of 225 (R = Me) and minor amount of 226 (960M2678). 

E. Pentamethylcyclopentadienyl Cobalt and Rhodium Complexes Derived from OFCOT... 

The pentamethylcyclopentadienyl (Cp ) derivatives of rhodium- such as [(RhCp )2(OH)3]Cl- and the catalyst system prepared from [(RhCp )2( JL-Cl)2] and pyrazole-type ligands, are used for alkene hydrogenation in 2-propanol. 

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