ISSN:
0021-8383
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Spectroscopical Investigations on N,N′-Disubstituted Dithiomalonamides and their Co(II)-ComplexesThe Co(II)-complexes of N,N′-disubstituted dithiomalonamides have been synthesized and characterized. Comparative uv/vis-, ir-, epr-, x-ray-, and n.m.r.-spectral studies of this complexes and of the dithiomalonamides suggest that their Co(II)-compounds are S4-coordinated square planar inner complexes (CoL2). The orbital splitting parameters Δ of these complexes have been calculated in the order of less than 20000 cm-1.For compounds CoL2 by this way the following spectrochemical series of the ligands results: dmma 〈 d clmma 〈 dnma 〈 d clpma 〈 dpma. All dithiomalonamides investigated in this work exist nearly complete in the dithion-form.
Notes:
Die spektrometrischen Untersuchungen in Lösungen belegen eindeutig die dominie-rende Rolle der Dithionform bei den Dithiomalonamiden, fur die Enthiol-thion-Form gibt es nur geringfügige, nicht eindeutige Hinweise bei einigen IR-Festkörperspektren.
Additional Material:
6 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19793210102
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