Ligand-to-ligand charge transfer in Mo(diphos)(CO)(NO)(dtc) with diphos=1,2-bis(diphenylphosphino)ethane and dtc − =dimethyldithiocarbamate. Spectroscopy and photochemistry

Abstract

The complex Mo-0(diphos)(CO)(NO)(dtc) with diphos = 1,2-bis(diphenylphosphino)ethane and dtc(-) = dimethyldithiocarbamate shows a longest-wavelength absorption at lambda(max) = 520 nm which is assigned to a (dtc(-) --> NO+) ligand-to-ligand charge transfer (LLCT) transition. LLCT excitation leads to the release of NO and dtc which form a blue species (lambda(max) = 690 nm). The photolysis proceeds with phi = 0.018 at lambda(irr) = 546 nm. (C) 2004 Elsevier B.V. All rights reserved.