ELECTRON SPIN RESONANCE STUDIES OF IRRADIATED HETEROGENEOUS SYSTEMS .V. NAPHTHALENE, ANTHRACENE, PHENANTHRENE, AND BIPHENYL ADSORBED ON POROUS SILICA GEL

被引：23

作者：

KINELL, PO

LUND, A

SHIMIZU, A

机构：

[1] Swedish Research Council's Laboratory, Studsvik

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1969年 / 73卷 / 12期

关键词：

D O I：

10.1021/j100846a024

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：

Naphthalene, anthracene, phenanthrene, and biphenyl adsorbed on silica gel have been irradiated with 60 Co γ rays at a dose rate of 200 krads/hr to a total dose of 3 Mrads. The amount of adsorbed material was 0.1-1%. Aromatic cations were detected by their esr spectra at 77-300°K. The singly charged naphthalene dimer and biphenyl monomer were unambiguously identified. The coupling constants of the naphthalene cation are similar to the solution values. The splittings of the biphenyl cation are apara = 6.6 G, aortho = 2.8 G. Neutral radicals formed seem to react at higher temperatures to yield secondary radicals which are persistent above room temperature.

引用

页码：4175 / &

共 43 条

[1]

ARAI H, 1967, B CHEM SOC JAP, V40, P318

[2] A SEMI-EMPIRICAL CALCULATION OF HYDROGEN HYPERFINE COUPLING CONSTANTS IN SOME SIGMA ELECTRON RADICALS [J].