Tricarbonyl[η4-2-phenyl-4-(3-phenylallylidene)-4H-oxazol-5-one]iron(0)

Abstract

The title compound, [Fe(C18H13NO2)(CO)3], is produced by the reaction of Fe2(CO)9 with an azlactone obtained from hippuric acid and cinnamaldehyde. Although, in principle, various coordination sites are possible in the ligand, the 1,3-butadiene subunit exclusively binds to the transition metal in an η4-fashion. The crystal structure is stabilized by inter­molecular inter­actions between the O atoms of the lactone and terminal carbon monoxide ligands and various CH groups.