3C- and 1H-NMR study of some Pt(II) complexes with dithiocarbazic ligands

Pt(II) complexes with singly- and doubly-deprotonated dithiocarbazic ligands have been examined by 1H- and 13C-NMR. Complexation induces a deshielding of all the ligand resonances, except that of the thiono carbon. The shielding of C(1) is greater in complexes with singly-deprotonated rather than wi...

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Bibliographic Details
Published inPolyhedron Vol. 7; no. 13; pp. 1211 - 1216
Main Authors Giuliani, A.M., Trotta, E.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 1988
New York, NY Elsevier Science
Subjects
Atomic and molecular physics
Exact sciences and technology
Molecular properties and interactions with photons
Nuclear resonance and relaxation
Physics
Organic dithiocarbazate
Divalent metal Complexes
Chemical solution
NMR parameter
Organic ligand
Transition metal Complexes
Experimental study
NMR spectrum
Inorganic compound
Platinum II Complexes
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Summary:Pt(II) complexes with singly- and doubly-deprotonated dithiocarbazic ligands have been examined by 1H- and 13C-NMR. Complexation induces a deshielding of all the ligand resonances, except that of the thiono carbon. The shielding of C(1) is greater in complexes with singly-deprotonated rather than with twice-deprotonated ligands. The upfield shift may be connected with a decrease of the CS bond order. The ensemble of the experimental NMR results indicates that considerable differences in bond order, electron density distribution and stereochemistry exist between the complexes with singly- and doubly-deprotonated ligands.
ISSN:0277-5387
DOI:10.1016/S0277-5387(00)81211-5