SOLVENT EFFECTS ON EPR-SPECTRA OF NITROXIDES OF N-(2,2,6,6-TETRAMETHYL-4-PIPERIDYL-1-OXYL)-N'-(ARYL-FORMYL)THIOSEMICARBAZIDES

被引：0

作者：

ZHANG, ZY ^{[1
]}

SHI, JC ^{[1
]}

WANG, HQ ^{[1
]}

FENG, LB ^{[1
]}

机构：

[1] ACAD SINICA,LANZHOU INST CHEM PHYS,LANZHOU 730000,PEOPLES R CHINA

来源：

ACTA CHIMICA SINICA | 1992年 / 50卷 / 08期

关键词：

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper the behaviour of five title nitroxides in nine solvents with different polarity has been studied by EPR spectrometry. It was observed that the hyperfine splitting constants A(N) of the nitroxides have good linear correlations with some cybotactic solvent parameters such as Kosower constants Z and Reichardt constants E(T). It was also found that the energy difference of adjacent energy levels DELTAE, as well as the spin-electron density at nitrogen atom P(N)pi has good correlation with Z and E constants. Furthermore, the rotational correlation time tau, the heights of the upfield EPR lines were found to be linearly correlated with the solvent viscosity eta.

引用

页码：805 / 810

页数：6