Phosphine derivatives of mercury and cadmium dithiolates: an electrospray mass spectrometric study

Alan M. Bond, Ray Colton, John C. Traeger, Justin Harvey

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Electrospray mass spectrometry (ESMS) has been used to investigate the ionic species present in solutions of mercury and cadmium diethyldithiocarbamates (dtc) and diethyldithiophosphates (dtp) after reaction with phosphine ligands. After reaction between the dithiolates (SS) and monodentate ligands, ESMS shows the presence of both [Hg(SS)(PR3)]+ and [Hg(SS)(PR3)2]+, but only [Cd(SS)(PR3)2]+. The 1:1 Cd(SS)2 phosphine complex observed by NMR methods is thought to be the neutral Cd(SS)2(PR3). Reaction of all the metal dithiolates with polydentate ligands in solution gives systems which are labile on the NMR timescale, but ESMS shows the presence of [M(SS)(phos)]+ in each case. This work emphasises the complementary nature of NMR and ESMS techniques.

Original languageEnglish
Pages (from-to)193-197
Number of pages5
JournalInorganica Chimica Acta
Issue number2
Publication statusPublished - 15 Jan 1995


  • Cadmium complexes
  • Dithiolate complexes
  • Electrospray mass spectrometry
  • Mercury complexes

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