Thermokinetic study of the inactivation reaction of 1-methyl phthalazinium ylids
| Autor: | Carposu Maria, Odochian Lucia, Dima St., Dumitras M., Petrovanu Magda |
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| Jazyk: | angličtina |
| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Journal of the Serbian Chemical Society, Vol 68, Iss 6, Pp 447-454 (2003) |
| Druh dokumentu: | article |
| ISSN: | 0352-5139 1820-7421 |
| DOI: | 10.2298/JSC0306447C |
| Popis: | 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 = 3.093x10-2L/mol s and, respectively, 2.16 x10-1 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 Ao dim,1 < Aodim,2. |
| Databáze: | Directory of Open Access Journals |
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