THE PRODUCTION OF CLASS-II MIXED-VALENCE COMPLEXES IN THE REDOX REACTION BETWEEN DITHIOMALONAMIDE AND PLATINUM(IV) OR PALLADIUM(IV).

Article abstract of DOI:10.1039/DT9840001975

Due to its joint reducing and complexing properties, dithiomalonamide (HL) reacts with 6>^2- and 6>^2- ions to afford two types of complexes which, on the basis of microanalytical data, may be formulated as M(HL)X₃ and M(HL)₂X₃ respectively.A detailed investigation of their behaviour in solution (1H, 13C, and 195Pt n.m.r.) and in the solid state (i.r., visible, x.p.s., and electrical conductivity measurements) has been performed.The experimental data show the two types of complexes to be mixed-valence compounds which are best formulated as II(HL)₂>IVX₆> and II(HL)₂>IV(HL)₂X₂>X₄ respectively.In these complexes, dithiomalonamide co-ordinates to palladium and platinum either via SN or S₂ donation.They are recognised as semiconductors with electrical conductivities up to 10^-4 Ω^-1cm^-1.

Full text of DOI:10.1039/DT9840001975

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