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Synthesis, properties and spectroscopic studies of cobalt(II) and cobalt(III) complexes with planar dithioxamides
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| Abstract |
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| 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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English
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Spectroscopy letters. - New York | |
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New York : 1993
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0038-7010
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26:5(1993), p. 751-776
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A1993LD54700004
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