Accession Number : AD0751324

Title :   Pulse Radiolysis of Penicillamine in Aqueous Solution: the Thiyl Radical and the Disulphide Radical Anion,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO)

Personal Author(s) : Purdie,J. W. ; Gillis,H. A. ; Klassen,N. V.

Report Date : 28 JUN 1971

Pagination or Media Count : 4

Abstract : It has been shown that the thiyl radicals produced by pulse radiolysis of aqueous solutions of mercaptans combine with the sulphydryl anion to give a radical anion complex. RS radical + RS(-) = RSSR(-). The same transient has been produced from disulphides by addition of solvated electrons: RSSR + e(-)(aq) goes to RSSR(-). In both cases the thiyl radicals eventually combine to give disulphide: RS radical + RS radical goes to RSSR. The authors have investigated the transients produced by pulse radiolysis of penicillamine, HO2CCH(NH2)C(CH3)2SH, in aqueous solutions and have observed both the RS radical and the RSSR(-) radical anion directly. Spectra were measured with a split light-beam system and are discussed here.

Descriptors :   (*ORGANIC SULFUR COMPOUNDS, *FREE RADICALS), (*RADIATION CHEMISTRY, ORGANIC SULFUR COMPOUNDS), ELECTRON IRRADIATION, ULTRAVIOLET SPECTRA, VISIBLE SPECTRA, IONS, AMINES, AMINO ACIDS, REACTION KINETICS, PH FACTOR, CANADA, SOLUTIONS(MIXTURES), ABSORPTION SPECTRA

Subject Categories : Radiation and Nuclear Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE