Substituted CarbonyI Complexes of Rhodium Containing Amino Acidato Ligands

Department of Chemistry, Dibrugarh University, Dibrugarh-786 004, Assam, India Manuscript received 2 November 1979, accepted 22 December 1979 The reactions of halogen, gaseous haloacids, alkyl and aryl amines, 2-2' bipyridyl, 1-10 phenanthroline, tetracyanoethylene on the dicarbonyl amino acidato complexes Rh(CO)2LL' and monocarbonyfs RhCO{LL')L2 where LL'=amino acedato groups and L=PPh3 have been reported. The reaction of gaseous haloacids on the dicarbonyls produces [Rh(CO)2X]2 and free amino acids. 1-10 phenanthrofine and 2-2' bipyridyl react with the dicarbonyls giving products where both CO groups have been substituted. Chlorination of the monocarbonyl derivatives produce the oxidised products of Rh(III) with a sharp CO absorption bands at ca. 2110 cm-1. Tetracyanoethylene adds to the dicarbonyls giving Rh(CO)2(LL')TCNE.- Monodentate nitrogen donor ligands substitutes the cis carbonyls giving Rh(LL')(RNH2)2. The complexes are characterised by elemental analyses, conductivity measurements, IR and UV-VIS spectra