Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 엄익환 | - |
dc.date.accessioned | 2016-08-28T10:08:38Z | - |
dc.date.available | 2016-08-28T10:08:38Z | - |
dc.date.issued | 2013 | - |
dc.identifier.issn | 0253-2964 | - |
dc.identifier.other | OAK-9882 | - |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/223541 | - |
dc.description.abstract | The second-order rate constants have been measured spectrophotometrically for the reactions of paraoxon 1 and parathion 2 with a series of alicyclic secondary amines, OH- and HOO- ions in H2O at 25.0 ± 0.1 °C. A linear Brønsted-type plot with βnuc = 0.40 was obtained for the reactions of 1 with amines and OH-. The reaction has been concluded to proceed through a concerted mechanism. HOO- deviates positively from the linear Brønsted-type plot, implying that the α-effect is operative. The magnitude of the α-effect (kHOO-/kOH-) was found to be ca. 55 for the reaction of 1 and 290 for that of parathion 2, indicating that HOO- is highly effective in decomposition of the toxic phosphorus compounds although it is over 4 pKa units less basic than OH-. Among the theories suggested as origins of the α-effect (e.g., TS stabilization through an intramolecular Hbonding interaction, solvent effect, and polarizability effect), polarizability effect appears to be the most important factor for the α-effect in this study, since the polarizable HOO- exhibits a larger α-effect for the reaction of the more polarizable substrate 2. | - |
dc.language | English | - |
dc.title | Decomposition of paraoxon and parathion by amines, HOO- and oh- Ions: Reaction mechanism and origin of the α-Effect | - |
dc.type | Article | - |
dc.relation.issue | 1 | - |
dc.relation.volume | 34 | - |
dc.relation.index | SCI | - |
dc.relation.index | SCIE | - |
dc.relation.index | SCOPUS | - |
dc.relation.index | KCI | - |
dc.relation.startpage | 201 | - |
dc.relation.lastpage | 206 | - |
dc.relation.journaltitle | Bulletin of the Korean Chemical Society | - |
dc.identifier.doi | 10.5012/bkcs.2013.34.1.201 | - |
dc.identifier.wosid | WOS:000316430100036 | - |
dc.identifier.scopusid | 2-s2.0-84872926466 | - |
dc.author.google | Bae A.-R. | - |
dc.author.google | Lee J. | - |
dc.author.google | Um I.-H. | - |
dc.contributor.scopusid | 엄익환(7006725706;6506759437) | - |
dc.date.modifydate | 20230411105538 | - |