title: HQSAR and CoMFA approaches in predicting reactivity of halogenated compounds with hydroxyl radicals.
abstract: Two quantitative structure-activity relationship (QSAR) methods: hologram QSAR (HQSAR) and comparative molecular field analysis (CoMFa) were evaluated for predicting half-lives of the hydroxyl radicals reaction with substituted aromatic compounds. The HQSAR approach, which is topological in nature, results in a mathematical model which was more stable and has a greater predictive ability than the model derived on the 3-D CoMFA approach. Interpretations of the colour coded results of both methods are in good agreement with the proposed mechanism of the hydroxyl radical oxidation of halogenated aromatic compounds in the atmosphere.
authors.affiliation: Faculty of Natural Sciences and Engineering, Department of Chemical Education and Informatics, University of Ljubljana, Vegova 4, 1000 Ljubljana, Slovenia. metka.vrtacnik@guest.arnes.si
authors.forename: M
authors.initials: M
authors.lastname: Vrtacnik
authors.forename: K
authors.initials: K
authors.lastname: Voda
mesh_terms: D015084:2,4-Dichlorophenoxyacetic Acid / Q000737:chemistry; D001272:Atmosphere; D002722:Chlorobenzenes / Q000737:chemistry; D002733:Chlorophenols / Q000737:chemistry; D006207:Half-Life; D006846:Hydrocarbons, Halogenated / Q000737:chemistry*; D017665:Hydroxyl Radical / Q000737:chemistry*; D021621:Imaging, Three-Dimensional; D010084:Oxidation-Reduction; D010416:Pentachlorophenol / Q000737:chemistry; D011237:Predictive Value of Tests; D021281:Quantitative Structure-Activity Relationship; D012984:Software
chemical_list: D002722:Chlorobenzenes; D002733:Chlorophenols; D006846:Hydrocarbons, Halogenated; D015084:2,4-Dichlorophenoxyacetic Acid; D017665:Hydroxyl Radical; D010416:Pentachlorophenol; C031294:chlorobenzene; C004762:2,4-dichlorophenol