Electron spin resonance study of radical adducts of unsaturated dicarboxylic and tricarboxylic acids | Zendy

B. B. Adeleke | Zendy; J.A. Faniran | Zendy

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Electron spin resonance study of radical adducts of unsaturated dicarboxylic and tricarboxylic acids

Author(s) -

B. B. Adeleke,

J.A. Faniran

Publication year - 1979

Publication title -

canadian journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.323

H-Index - 68

eISSN - 1480-3291

pISSN - 0008-4042

DOI - 10.1139/v79-245

Subject(s) - chemistry , radical , adduct , electron paramagnetic resonance , itaconic acid , tricarboxylic acid , photochemistry , ion , unpaired electron , oxygen , medicinal chemistry , radical ion , organic chemistry , citric acid cycle , nuclear magnetic resonance , copolymer , physics , enzyme , polymer

An esr study of the addition reactions of • OH, CO 2 −• , SCO 3 −• , and • PO 3 2− radicals to the anions of aconitic, itaconic, and chelidonic acids is reported. There was an electron transfer reaction between CO 2 −• and chelidonic acid anion. The phosphite radical reacted with chelidonic acid to produce two types of radicals resulting from addition to C=C and the oxygen of the carbonyl group in the acid. The radical adducts of the anions of aconitic and itaconic acids exhibited extensive linebroadenings due to hindered internal rotations. The barrier to internal rotations is shown to be the repulsive forces between the negative charges on the various substituents.

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