A Dinuclear,Triple-Stranded Helicate with a Diamide-Bridged Catechol/Benzenedithiol Ligand

摘要

The spontaneous self-organization of coordination compounds has been studied intensively over the last few years.One area of particular interest are the triple-stranded helicates with catecholato donor groups.Much less is known about helicates with thiolato donor groups,only bis(benze-nedithiol) ligands and their dinuclear nickel complexes have been reported.Herein we present the synthesis of the first catechol/benzenedithiol (O-O/S-S) ligand H_4-l and the molecular structure of the triple-stranded LAMBDA,LAMBDA-helicate Na(PNP)_3[Ti_2(l)_3] (PNP~+=bis(triphenylphosphoranylidene)-ammonium).