Stereochemistry and thermal behaviour of new cobalt(II), nickel(II) and copper(II) complexes of 5-(2-thiazolylazo)-barbituric and thiobarbituric acids at different temperatures

Abstract

The stereochemistry of new cobalt(II), nickel(II) and copper(II) complexes of 5-(2-thiazolylazo)-barbituric and thiobarbituric acids was studied on the basis of thermal mea-surements. The orders of reactions and the energies of activation were evaluated. The data were explained from different aspects, mainly with regard to the electronic character of the substituent. © 1992 Wiley Heyden Ltd., Chichester and Akadémiai Kiadó, Budapest.