PROTON AFFINITY OF THE STABLE FREE-RADICAL 2,2,6,6-TETRAMETHYL-1-PIPERIDINYLOXY MEASURED BY THE KINETIC METHOD

被引：18

作者：

CHEN, GD ^{[1
]}

KASTHURIKRISHNAN, N ^{[1
]}

COOKS, RG ^{[1
]}

机构：

[1] PURDUE UNIV, DEPT CHEM, W LAFAYETTE, IN 47907 USA

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES | 1995年 / 151卷 / 01期

基金：

美国国家科学基金会;

关键词：

KINETIC METHOD; PROTON AFFINITY; STABLE FREE RADICAL; TEMPO;

D O I：

10.1016/0168-1176(95)04308-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Proton-bound dimers can be generated between the stable free radical, 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO), and various reference compounds in a chemical ionization source. The individual mass-selected dimers dissociate upon collision to yield the protonated monomers as the only product ions. From their relative abundances the kinetic method yields a value of 209.5 +/- 1.0 kcal mol(-1) for the proton affinity of the TEMPO radical. The proton affinity is compared to that of m-methylphenoxyl and other oxy radicals.

引用

页码：69 / 75

页数：7

共 38 条

[1] FREE-VOLUME STRUCTURE AND SPIN-PROBE DYNAMICS IN SOLID POLYMERS [J].