A multinuclear (1H, 13C, 113Cd) nuclear magnetic resonance and magnetic circular dichroism spectroscopic study of thiolate complexes of cadmium (original) (raw)

1981, Inorganica Chimica Acta

Appropriate combinations of 'H, 13C and "'Cd NMR have been used to study ca. 0.05 M solutions of a wide range of 1'3Cd-enriched thiolatocadmates formed from the corresponding poorly soluble cadmium thiolates in the presence of excess thiolate. In addition, MCD spectra have been recorded for dilute, ca. lo-' M, solutions of a representative set of thiolate complexes of cadmium. Cadmium-113 chemical shifts are given for the complexes formed by 31 different thiolates individually in water at ambient probe temperature, and slowexchange 'H and/or 13C and/or '13Cd NMR spectra are reported for several typical complexes at reduced temperature in CD30D. In aqueous solution at ambient probe temperature, ligands with vicinal thiolate groups and-SCH, CHRS (R = H, Me, Et, CH, OH, CH, SO; or CH2S)) form bis(chelate) complexes which have 6od >\ 778 ppm, less shielded than the range for tetrahedral Cd(SR)i

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