Complexes of technetium, rhenium, and rhodium with sexidentate Schiff-base ligands

Abstract

The monocationic technetium(IV) and rhenium(IV) complexes with the sexidentate Schiff-base ligands tris[2-(2′-hydroxybenzylideneethyl)]amine and its substituted derivatives have been prepared and their electrochemical properties studied. The variable-temperature 90.6 MHz ¹³C-{¹H} n.m.r. spectrum of the rhodium(III) complex of tris[2-(2-hydroxy-5′-isopropylbenzylideneethyl)-amine] has been observed, indicating fluxionality at temperatures above 218 K.