A dinuclear, triple-stranded helicate with a diamide-bridged catechol/benzenedithiol ligand

Abstract

Three of a kind: The directional O-O/S-S heteroclonor ligand H 4-1 reacts with TiIV to give the triple-stranded dinuclear tetra-anion [Ti2(1)3]4- (see picture, acac = 2,4-pentanedione). The reaction yields exclusively the regioisomer with a parallel orientation of the ligands and only one pair of enantiomers is obtained.