1,10-Phenanthroline complexes of rhodium(I)

Abstract

The salts [RhL(CO)₂][Rh(CO)₂Cl₂][L = 1,10-phenanthroline (phen) or 2,2′-bipyridyl (bipy)] have been prepared from the reaction of the ligand L with [(OC)₂Rh(µ-Cl)₂Rh(CO)₂]. The bipy salt was previously formulated as [Cl(OC)₂Rh(µ-bipy)Rh(CO)₂Cl]. Chloride and perchlorate salts of the cation [Rh(phen)(CO)₂]⁺ have also been prepared; the perchlorate is phototropic, being yellow in the dark and green in the light. Complexes previously formulated as [Rh (pd)(phen)] and [Rh(quin)(phen)](pd = pentane-2,4-dionato and quin = quinolin-8-olato) are in fact both [Rh(phen)(CO)₂Cl].