Journal of the Chemical Society Dalton Transactions · 1984 · 23 citations · 0 references
Natural SciencesChemistryInorganic ChemistryOrganic ChemistrySpectroscopyCoordination ChemistryInorganic SpectroscopyMetal-ligand BondingTransition Metal ChemistryTransition Metal ComplexesDiamagnetic ComplexesElectron TransferElectron Transfer MechanismsElectronic Spectra Of Transition Metal ComplexesLigand Effects On ReactivitySpectroscopic Characterization Of Metal-ligand BondsSpectroscopy Of Transition Metal ComplexesX-ray Spectra
The ligand behaviour of the methyl esters of dithiocarbazic acids NH2NHC(S)SMe (L) and NHPhNHC(S)SMe (PhL) in the diamagnetic complexes [PtL2Cl2], [Pt(L – H)2], [Pt(L – 2H)2], [Pt(PhL)2Cl2], [Pt(PhL – H)(PhL)CI], [Pt(PhL – H)2], and [Pt(PhL – 2H)2] have been investigated. The electronic, i.r., and X-ray photoelectron spectra of the solids have been studied; electrochemical and n.m.r. studies in solution have been performed. The ligands are co-ordinated in neutral and/or anionic deprotonated form. In the deep coloured complexes containing the doubly deprotonated ligands the metal remains essentially in the +2 oxidation state whereas the ligands have become oxidized. Moreover these complexes show electron-transfer properties. Isomerism has been observed for many complexes.