Observation of kinetic tritium isotope effects by dynamic NMR. The tautomerism of porphyrin

被引：86

作者：

Braun, J ^{[1
]}

Limbach, HH ^{[1
]}

Williams, PG ^{[1
]}

Morimoto, H ^{[1
]}

Wemmer, DE ^{[1
]}

机构：

[1] LAWRENCE BERKELEY LAB,NATL TRITIUM LABELLING FACIL,BERKELEY,CA 94720

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1996年 / 118卷 / 30期

关键词：

D O I：

10.1021/ja954146n

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

As the knowledge of tritium isotope effects is desirable from a theoretical standpoint, we have applied 3H NMR in order to study these effects in the case of the double-hydron tautomerism of 15 N-labeled porphyrin. In conclusion, the determination of kinetic tritium isotope effects is a powerful application of dynamic 3H NMR. In the case of the tautomerism of porphyrin, these effects support the stepwise hydron-tunneling mechanism and can serve to test multidimensional tunneling models in the future.

引用

页码：7231 / 7232

页数：2

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