REACTION ENTROPIES FOR THE O-2/O-2- REDOX COUPLE IN APROTIC-SOLVENTS

被引：19

作者：

OHSAKA, T

TSUSHIMA, M

TOKUDA, K

机构：

[1] Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Midori-ku, Yokohama, 227

来源：

BIOELECTROCHEMISTRY AND BIOENERGETICS | 1993年 / 31卷 / 03期

关键词：

D O I：

10.1016/0302-4598(93)86114-G

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The reaction entropies DELTAS(rc)degrees for the redox reaction of the O2/O2- couple in aprotic solvents have been obtained from the temperature dependence of the formal potential measured using a nonisothermal electrochemical cell. The solvent effect on the values of DELTAS(rc)degrees is discussed in terms of the Born dielectric continuum model and the empirical solvent parameters. A linear decrease in the DELTAS(rc)degrees value with increasing solvent acceptor number was observed, indicating that the orientation of solvent dipoles around O2- is the main factor determining the values of the entropy change and its solvent dependence.

引用

页码：289 / 300

页数：12

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