N-Substituted salicylaldimine complexes of chromium(III)

Abstract

Tris(salicylaldehydato)chromium(111) reacts readily with primary amines or ammonia to give complexes of the form Cr(sal-NR)₃ where R = n-C₃H₉, i-C₄H₉, p-C₆H₄CH₃, p-C₆H₄Br. The complexes are monomeric in benzene, and have magnetic moments in the range 3.77-3.81 B.M. at room temperature. Crystal field splitting energies have been obtained for the complexes from their spectra. Ethylenediamine reacts with the salicylaldehyde complex to give a cationic complex containing the tridentate ligand -0-C₆H₄-CH=NCH₂CH₂-NH₂.