ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
New polynuclear manganese-thiolato complexes were prepared by reaction of Mn ions with chelating mercapto compounds, such as 1,2-dimercaptoethane (DME), 3,4-dimercaptotoluene (DMT), cystein (Cys), β-mercaptoethyl alcohol (ME), β-mercaptoethylamine (MEA), and mercaptoacetic acid (MAA). Potassium permanganate formed stable complexes with DME, DMT and Cys. The complexes of ME, MEA and MAA were prepared by the reaction with manganous chloride. The temperature dependencies of the magnetic susceptibility of the complexes, except Cys, obeyed the Curie-Weiss law, indicating strong antiferromagnetic interaction between the spins on the Mn ions. The valence of the DME and DMT complexes was calculated to be IV to V, and that of the Cys, ME, MEA and MAA complexes to be II to IV. ESR spectra of the DME and DMT complexes showed broad singlet absorptions, while those of ME, MEA and MAA complexes exhibited narrow Lorentzian singlets, both types indicating strong interaction between the spins. These results and the composition indicated polynuclear complexes containing μ-oxo (DME and DMT), μ-chloro or μ-thiolato (ME, MEA and MAA) structure, while Cys gave mononuclear complex.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1981.021820111
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