Über die Wertigkeit des Kobalts in Azofarbstoffkomplexen
- 24 October 1968
- journal article
- research article
- Published by Wiley in Helvetica Chimica Acta
- Vol. 51 (7) , 1691-1698
- https://doi.org/10.1002/hlca.19680510725
Abstract
The CoII‐azocomplexes (1:2) have been prepared and the conditions for their existence are defined. The oxidation to the CoIII‐complex by either oxygen or by the dyestuff itself is described. In the case of dyestuff‐oxidation, the azo group is reduced to the respective amines. The formation of CoIII‐azocomplexes in a technical scale by metallizing with CoII‐salts is discussed.Keywords
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- The Role of Catalysis in the Preparation and Reactions of Some Cobaltic and Chromic AmminesJournal of the American Chemical Society, 1945