Abstract
In acid medium dithiomalonamide forms stable, cationic complexes of general formula: M(H 2A) 2X 2 (M is Ni(II), Pd(II), Pt(II); H 2A is H 2NCSCH 2CSNH 2; X is Cl, Br, I, ClO 4). A full vibrational analysis (infrared and Raman spectroscopy) is presented and the influence of the central metal ion and the counterion is investigated. Furthermore some solid state exchange reactions are studied and the thermal behaviour of the complexes is described. Finally the compounds are compared with analogous complexes of dithiooxamide. It seems that the presence of the methylene function between the thioamide groups in dithiomalonamide creates a series of interesting features.
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