%0 Journal Article
%T Thermokinetic study on the inactivation reactions of 1-methylphthalazinium ylids
%A MARIA CAPRO£¿U
%A LUCIA ODOCHIAN
%A £¿T. DIMA
%A M. DUMITRA£¿
%J Journal of the Serbian Chemical Society
%D 2003
%I Serbian Chemical Society
%X The present paper consists in a thermokinetic study on the dimerization reactions of 1-methylphthalazinium ylids with  NO2 (ylid 1) and, respectively,  O CH3 (ylid 2) substituents in the p position of the benzoyl radical bound to the ylidic carbanion. From experimental data, the reaction order and rate constants have been calculated. The reaction order n = 2 confirmed the ylids  dimerization reactions, while the values of the rate constants, k2 = 3.093¡Á10-2 L/mol s and, respectively, 2.16¡Á10-1 L/mol s for the dimerization of ylids 1 and 2 made evident the higher reactivity of ylid 2 versus ylid 1. The same conclusion is also supported by the results of the thermodynamic study based on the chemical affinity of the two reactions, when Aodim,1 < Aodim,2.
%K 1-methylphthalazinium ylids
%K dimerization
%K inactivation
%K thermokinetics (reaction order
%K rate constants
%K chemical affinity)
%U http://www.shd.org.yu/HtDocs/SHD/Vol68/No6/V68-No6-02.pdf