BIS[4'-(4-ANILINO)-2,2' 6',2''-TERPYRIDINE]TRANSITION-METAL COMPLEXES- ELECTROCHEMICALLY ACTIVE MONOMERS WITH A RANGE OF MAGNETIC AND OPTICAL-PROPERTIES FOR ASSEMBLY OF METALLO OLIGOMERS AND MACROMOLECULES/

The new ligand 4'-(4-anilino)-2,2':6',2 ''-terpyridine (L-1) and a ran ge of its transition-metal complexes have been prepared. The crystal a nd molecular structures of L-1 and [CuL21][PF6](2) have been determine d. Model reactions show that L-1 and its transition-metal complexes ca n be functionalised with suitable organic reagents: reactions with aro matic dianhydrides give imide derivatives, reactions with acid chlorid es afford amide derivatives and benzoquinone reacts with L-1 to give a quinonylanilinoterpyridine ligand, complexes of which are described, but not with the complexes of L-1. The use of L-1 and its complexes in building up multicomponent architectures has been tested. Metallo-dim ers and co-ordination polymers linked by new binucleating bis(terpyrid yl) ligands have been prepared by two routes: (a) first coupling two L -1 with difunctional organic reagents and then treating the new binucl eating ligands with a metal source, or (b) preforming monomeric comple xes of L-1 and treating these with the same difunctional organic reage nts. Analytical, spectroscopic and electrochemical data are given for all complexes; the chromophoric, magnetic and electrochemical properti es of the complexes vary with transition metal and terpyridyl ligand s ubstituent.