Title
Synthesis, properties and spectroscopic studies of cobalt(II) and cobalt(III) complexes with planar dithioxamides Synthesis, properties and spectroscopic studies of cobalt(II) and cobalt(III) complexes with planar dithioxamides
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
New York ,
Subject
Chemistry
Source (journal)
Spectroscopy letters. - New York
Volume/pages
26(1993) :5 , p. 751-776
ISSN
0038-7010
ISI
A1993LD54700004
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The complexes [Co(III)(LH2)3]X3 (LH2 = dithiooxamide,N-methyldithiooxamide, N,N'-dimethyldithiooxamide; X = Cl, Br, I) and [Co(II)L]n have been prepared. They were characterized by analyses, thermal techniques, magnetic susceptibilities and spectroscopic (ligand-field, C-13-NMR, FT-IR) methods. The vibrational analysis of the prepared complexes is given using NH/ND and CH3/CD3 isotopic substitutions. The neutral dithiooxamides exhibit a bidentate chelating S,S-coordination, while the doubly deprotonated dithiooxamido anions act as bis-bidentate bridging S,N/N,S-ligands giving trans polymeric structures. The Co(III) complexes are octahedral with Co(III)S6 coordination spheres. A square planar geometry around Co(II) is assigned for the polymeric compounds.
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