Synthesis and reactions of metallo-diethynylbenzenes: building blocks for redox-active poly(phenyleneethynylene)s†
Abstract
The metallo-diethynylbenzene complex W(CC6H4CCH-4)(dmpe)2Cl, a precursor to metal-containing poly(phenyleneethynylene)s, has been prepared using alkyne-metathesis methodology and can be coupled into unsaturated organic frameworks at both the ethynyl moiety and the tungsten center and one-electron oxidized to the open-shell cation.