Synthesis and structural characterization of rac-2-[(diphenylphosphino)methyl]ferrocenecarboxylic acid, its selected derivatives and some rhodium complexes

A novel ferrocene carboxyphosphine, rac-2-[(diphenylphosphino)methyl]ferrocenecarboxylic acid (1), has been synthesized and further converted to the respective methyl ester, phosphine oxide and phosphine sulfide. The acid and the corresponding methyl ester were studied as ligands in rhodium complexes.