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Volumn 22, Issue 7, 2009, Pages 691-702

Reactivity of the insecticide chlorpyrifos-methyl toward hydroxy! and perhydroxyl ion. Effect of cyclodextrins

Author keywords

Cyclodextrins; Hostguest systems; Hydrogen peroxide; Hydrolysis; Inclusion complexes; Organophosphorus insecticides; Reaction mechanisms

Indexed keywords

BASIC MEDIA; CHLORPYRIFOS-METHYL; HOSTGUEST SYSTEMS; HYDROLYSIS REACTION; HYDROXYL ION; INCLUSION COMPLEXES; KINETIC DATA; MEDIATED REACTIONS; NAOH CONCENTRATION; OH GROUP; ORGANOPHOSPHORUS INSECTICIDES; PH RANGE; QUANTITATIVE FORMATION; REACTION CENTER; REACTION MECHANISMS; REACTION PATHWAYS; SATURATION KINETICS; SECOND-ORDER RATE CONSTANTS;

EID: 67650825839     PISSN: 08943230     EISSN: 10991395     Source Type: Journal    
DOI: 10.1002/poc.1502     Document Type: Article
Times cited : (14)

References (74)
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    • Report on FQPA Tolerance Reassessment Progress and Risk Management Decision for Chlorpyrifos-methyl, Accessed June 26, 2008
    • Report on FQPA Tolerance Reassessment Progress and Risk Management Decision for Chlorpyrifos-methyl. http://www.epa.gov/pesti-cides/reregistration/ REDs/cpm-tred.pdf. Accessed June 26, 2008.
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    • Although the association equilibrium constant for the substrate could in principle be corrected using the known value of the association constants of the solvents, we have not done that because the possibility of formation of ternary complexes CD, ACN, Substrate can not be discarded, therefore we prefer to deal with the apparent association constant experimentally determined. If there is no ternary complex formation, the observed inhibition is smaller than the real inhibition because the amount of the free CD available for complexation with the substrate is smaller than the analytical concentration. See L. Garcia-Rio, J. C. Mejuto, M. Nieto, J. Perez-Juste, M. Perez-Lorenzo, P. Rodriguez-Dafonte, Supramol. Chem. 2006, 17, 649-653
    • Although the association equilibrium constant for the substrate could in principle be corrected using the known value of the association constants of the solvents, we have not done that because the possibility of formation of ternary complexes CD + ACN + Substrate can not be discarded, therefore we prefer to deal with the apparent association constant experimentally determined. If there is no ternary complex formation, the observed inhibition is smaller than the real inhibition because the amount of the free CD available for complexation with the substrate is smaller than the analytical concentration. See L. Garcia-Rio, J. C. Mejuto, M. Nieto, J. Perez-Juste, M. Perez-Lorenzo, P. Rodriguez-Dafonte, Supramol. Chem. 2006, 17, 649-653.
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    • The distances were calculated by optimizing the geometry of the insecticide by Hyper Chem 7.5, Evaluation version 7.5 by Hyperab,Inc. U.S.A
    • The distances were calculated by optimizing the geometry of the insecticide by Hyper Chem 7.5, Evaluation version 7.5 by Hyperab,Inc. U.S.A.
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    • Calculated with Chem Draw Ultra, version 8.0 2003, Cambridge Soft Corporation, U.S.A
    • Calculated with Chem Draw Ultra, version 8.0 (2003). Cambridge Soft Corporation, U.S.A.
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    • Although we did not determine the rate of the reaction of H 2O2 at different pH in the presence of cyclodextrin, it is very unlikely that the k2 pathway is significant with this nucleophile while it is not with water. The rate of this pathway is very much dependent on the orientation of the substrate in the complex and this does not change with the nucleophile
    • 2 pathway is significant with this nucleophile while it is not with water. The rate of this pathway is very much dependent on the orientation of the substrate in the complex and this does not change with the nucleophile.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.