Reaction of 2-hydroxy-2-propyl radical with maleic and fumaric acids in aqueous solution: pH dependence (Articolo in rivista)

Type
Label
  • Reaction of 2-hydroxy-2-propyl radical with maleic and fumaric acids in aqueous solution: pH dependence (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.cplett.2007.03.015 (literal)
Alternative label
  • L. Wojnárovits, E. Takács, S.S. Emmi (2007)
    Reaction of 2-hydroxy-2-propyl radical with maleic and fumaric acids in aqueous solution: pH dependence
    in Chemical physics letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L. Wojnárovits, E. Takács, S.S. Emmi (literal)
Pagina inizio
  • 224 (literal)
Pagina fine
  • 228 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 438 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institute of Isotopes, Hungarian Academy of Sciences, H-1525 Budapest, P.O. Box 77, Hungary ; Istituto per la Sintesi Organica e la Fotoreattivita` (ISOF), CNR, Via Gobetti 101, 40129 Bologna, Italy (literal)
Titolo
  • Reaction of 2-hydroxy-2-propyl radical with maleic and fumaric acids in aqueous solution: pH dependence (literal)
Abstract
  • 2-Hydroxy-2-propyl radical reacts with highly different rate coefficients (k) with the three protonation forms of maleic and fumaric acids. With protonated fumaric acid k is high, (2.1 ± 0.4) · 109 mol? 1 dm 3s? 1 due to the nucleophilic character of IP reaction and the electron withdrawing -COOH groups. With mono- and dianion molecules the k0s are smaller, (6.6 ± 0.7) · 108 and (3.1 ± 3.0) · 107 mol? 1 dm 3s? 1. In maleic acid k for the monoanion is higher ((1.34 ± 0.03) · 109 mol ?1 dm 3s? 1) than for protonated and dianion species, (5.6 ± 0.6) · 108 and (3.5 ± 3.1) · 107 mol? 1 dm 3 s? 1. The high k is interpreted in terms of cyclic structure and charge localization between carboxylic groups. (literal)
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