Q-Band EPR Spectroscopy of Photogenerated Quartet State Organic Nitreno Radicals

被引：5

作者：

Allen, Tamara L. ^{[1
]}

Lahti, Paul M. ^{[1
]}

机构：

[1] Univ Massachusetts, Dept Chem, Amherst, MA 01003 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2011年 / 115卷 / 19期

基金：

美国国家科学基金会;

关键词：

ELECTRON-SPIN-RESONANCE; STRUCTURE ESR-SPECTRA; RANDOM-ORIENTATION; MATRIX-ISOLATION; QUINTET; SEPTET; MOLECULES; HYDROCARBON; PHOTOLYSIS; DICARBENE;

D O I：

10.1021/jp201675c

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：

Q-band 34 GHz EPR spectra are reported for quartet state 2-(para-nitrenophenyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl and 3-(para-nitrenophenyl)-1, 5,6-triphenylverdazyl reactive intermediates generated from the corresponding azido precursors under frozen matrix photochemical conditions, in situ in a Qband resonator. Comparison of the Qband spectra to those generated under conventional X-band (9-10 GHz) conditions shows the much superior resolution of transitions in the g > 2 region of the former. Spectral transitions assigned by line shape simulation yield the zero field splittings for the nitreno-radical species.

引用

页码：4922 / 4928

页数：7

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