N-Substituted salicylaldimine complexes of iron(III). I. Synthesis, infrared and mass spectra

Complexes of iron(111) and N-substituted salicylaldimines have been prepared of general formulae Fe(sal-NR)3,? Fe(sal-NR)2 sal, FeCl3(salH-NR)2, Fe(sal-NR)2X (X = Cl, Br), and [Fe(sal-NR)2]2O. The complexes all show spin-free magnetic behaviour with moments at room temperature of the order of 5.9 B.M. except for the oxygen-bridged complexes which have low moments (c.2 B.M.) believed due to a spin-exchange process. The infrared spectra and mass spectra of the complexes are discussed.