HPLC studies on the photochemical formation of free radicals from malonic acid

Istvan Szalai, Horst Dieter Försterling, Z. Noszticzius

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In the Belousov Zhabotinsky reaction, malonyl radicals formed during the oxidation of malonic acid by Ce4+ play an important role in the mechanism of the negative feedback loop. In the past, we have analyzed the end products in the Ce4+-malonic acid reaction applying HPLC technique. For comparison, we generated malonyl radicals by UV irradiation of solutions of malonic acid and we identified the reaction products. Two of these are the same as in the Ce4+-malonic acid reaction, but some additional products are also formed. To explain our experimental results, a new reaction path is proposed where malonyl radicals and hydrogen atoms are the first intermediates in the photochemical decomposition of the malonic acid. Mechanistic differences between this photochemical decomposition and the Ce4+-malonic acid reaction are also discussed.

Original languageEnglish
Pages (from-to)3118-3120
Number of pages3
JournalJournal of Physical Chemistry A
Volume102
Issue number18
Publication statusPublished - Apr 30 1998

Fingerprint

free radicals
Free Radicals
acids
Decomposition
decomposition
negative feedback
products
Reaction products
reaction products
malonic acid
Hydrogen
hydrogen atoms
Irradiation
Feedback
Atoms
Oxidation
oxidation
irradiation
atoms

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

HPLC studies on the photochemical formation of free radicals from malonic acid. / Szalai, Istvan; Försterling, Horst Dieter; Noszticzius, Z.

In: Journal of Physical Chemistry A, Vol. 102, No. 18, 30.04.1998, p. 3118-3120.

Research output: Contribution to journalArticle

Szalai, Istvan ; Försterling, Horst Dieter ; Noszticzius, Z. / HPLC studies on the photochemical formation of free radicals from malonic acid. In: Journal of Physical Chemistry A. 1998 ; Vol. 102, No. 18. pp. 3118-3120.
@article{1c20c218981c4628ba67663e66141885,
title = "HPLC studies on the photochemical formation of free radicals from malonic acid",
abstract = "In the Belousov Zhabotinsky reaction, malonyl radicals formed during the oxidation of malonic acid by Ce4+ play an important role in the mechanism of the negative feedback loop. In the past, we have analyzed the end products in the Ce4+-malonic acid reaction applying HPLC technique. For comparison, we generated malonyl radicals by UV irradiation of solutions of malonic acid and we identified the reaction products. Two of these are the same as in the Ce4+-malonic acid reaction, but some additional products are also formed. To explain our experimental results, a new reaction path is proposed where malonyl radicals and hydrogen atoms are the first intermediates in the photochemical decomposition of the malonic acid. Mechanistic differences between this photochemical decomposition and the Ce4+-malonic acid reaction are also discussed.",
author = "Istvan Szalai and F{\"o}rsterling, {Horst Dieter} and Z. Noszticzius",
year = "1998",
month = "4",
day = "30",
language = "English",
volume = "102",
pages = "3118--3120",
journal = "Journal of Physical Chemistry A",
issn = "1089-5639",
publisher = "American Chemical Society",
number = "18",

}

TY - JOUR

T1 - HPLC studies on the photochemical formation of free radicals from malonic acid

AU - Szalai, Istvan

AU - Försterling, Horst Dieter

AU - Noszticzius, Z.

PY - 1998/4/30

Y1 - 1998/4/30

N2 - In the Belousov Zhabotinsky reaction, malonyl radicals formed during the oxidation of malonic acid by Ce4+ play an important role in the mechanism of the negative feedback loop. In the past, we have analyzed the end products in the Ce4+-malonic acid reaction applying HPLC technique. For comparison, we generated malonyl radicals by UV irradiation of solutions of malonic acid and we identified the reaction products. Two of these are the same as in the Ce4+-malonic acid reaction, but some additional products are also formed. To explain our experimental results, a new reaction path is proposed where malonyl radicals and hydrogen atoms are the first intermediates in the photochemical decomposition of the malonic acid. Mechanistic differences between this photochemical decomposition and the Ce4+-malonic acid reaction are also discussed.

AB - In the Belousov Zhabotinsky reaction, malonyl radicals formed during the oxidation of malonic acid by Ce4+ play an important role in the mechanism of the negative feedback loop. In the past, we have analyzed the end products in the Ce4+-malonic acid reaction applying HPLC technique. For comparison, we generated malonyl radicals by UV irradiation of solutions of malonic acid and we identified the reaction products. Two of these are the same as in the Ce4+-malonic acid reaction, but some additional products are also formed. To explain our experimental results, a new reaction path is proposed where malonyl radicals and hydrogen atoms are the first intermediates in the photochemical decomposition of the malonic acid. Mechanistic differences between this photochemical decomposition and the Ce4+-malonic acid reaction are also discussed.

UR - http://www.scopus.com/inward/record.url?scp=0000472283&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000472283&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0000472283

VL - 102

SP - 3118

EP - 3120

JO - Journal of Physical Chemistry A

JF - Journal of Physical Chemistry A

SN - 1089-5639

IS - 18

ER -