Chemistry of molybdenum. Part 2. Complexes of molybdenum with 2-aminocyclopent-1-ene-1-carbodithioate. Synthesis, characterisation, and electrochemical studies
Abstract
The chemistry of the bidentate (S,Sā) donor ligands 2-aminocyclopent-1-ene-1-carbodithioic acid (HL1) and its N-alkylated derivatives [alkyl = C2H5(HL2), C4H9(HL3), or cyclo-C6H11(HL4)] with molybdenum in oxidation states +6 and +5 is described. The MoVI compounds are all cis-dioxo-species. Reduction of [MoO2(L1)2] with excess HL1 yields [MoO(L1)3], a monomeric MoV compound. The complexes are all intensely coloured due to a ligand-to-metal charge-transfer transition. Infrared electronic, e.s.r., magnetic, and electrochemical studies of these complexes are described. The results are discussed in terms of electronic structure and their relationship to the Mo centre in xanthine oxidase.