RADICAL INTERMEDIATES IN THE PHOTOCHEMICAL DECOMPOSITION OF P-TOLUENESULPHONATE (A KINETIC SPIN-TRAPPING STUDY)

被引：11

作者：

BREZOVA, V

STASKO, A

BISKUPIC, S

机构：

[1] Faculty of Chemical Technology, Slovak Technical University, 81237 Bratislava, Radlinského 9, CS

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1993年 / 71卷 / 03期

关键词：

D O I：

10.1016/1010-6030(93)85004-R

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

On irradiation of aqueous sodium p-toluenesulphonate solutions, the NaSO3. radical is formed, whose lifetime is approximately 5 x 10(-3) s, and which is characterized by a singlet electron paramagnetic resonance (EPR) spectrum with g = 2.0035. In the presence of 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) the main product found is the NaSO3.-DMPO adduct with splitting constants a(N) = 1.45 mT and a(H) = 1.635 mT. Its formation and decay can be described by formal first-order kinetics and a corresponding reaction scheme is suggested. HO.-DMPO and carbon-centred R3C.-DMPO adducts are observed as minor byproducts.

引用

页码：229 / 235

页数：7

共 9 条

[1] ULTRAVIOLET SPECTROMETRIC DETERMINATION OF MIXTURES OF ARYLSULFONIC ACIDS [J].