THE THERMAL-DECOMPOSITION OF HALOACETIC ACIDS - A LASER PYROLYSIS ANDSEMIEMPIRICAL STUDY

Authors
HETTEMA H HORE NR RENNER ND RUSSELL DK
Citation
H. Hettema et al., THE THERMAL-DECOMPOSITION OF HALOACETIC ACIDS - A LASER PYROLYSIS ANDSEMIEMPIRICAL STUDY, Australian Journal of Chemistry, 50(4), 1997, pp. 363-372
Citations number
35
Categorie Soggetti
Chemistry
Journal title
Australian Journal of Chemistry → ACNP
ISSN journal
00049425
Volume
50
Issue
4
Year of publication
1997
Pages
363 - 372
Database
ISI
SICI code
0004-9425(1997)50:4<363:TTOHA->2.0.ZU;2-8
Abstract
Infrared laser-powered homogeneous pyrolysis, coupled with Fourier-tra nsform infrared measurement of product distributions, has demonstrated that four different unimolecular mechanisms are significant in the in itiation of gas-phase thermal decomposition of CH3COOH (1), CF3COOH (2 ), CH2ClCOOH (3), CHCl2COOH (4), CCl3COOH (5), CH2BrCOOH (6), and CH2I COOH (7): decarboxylation and dehydration for (1); H-X elimination for (2)-(6); and C-X bond homolysis for (6) and (7). These conclusions ar e supported by the semiempirical calculation of activation energies fo r the possible pathways.