Femtosecond dynamics of diradicals: transition states, entropic configurations and stereochemistry

被引：38

作者：

De Feyter, S ^{[1
]}

Diau, EWG ^{[1
]}

Scala, AA ^{[1
]}

Zewail, AH ^{[1
]}

机构：

[1] CALTECH, Arthur Amos Noyes Lab Chem Phys, Pasadena, CA 91125 USA

来源：

CHEMICAL PHYSICS LETTERS | 1999年 / 303卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(99)00263-8

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：

With femtosecond-resolved mass spectrometry, we report real-time studies of the dynamics of reactive diradicals: trimethylene, tetramethylene and structurally-constrained (by a bridge) tetramethylene. These comparative studies elucidate the role of transition states, entropic configurations and IVR on the global potential energy surface. The critical time scale for rotational clocks in stereochemistry is illustrated in the reaction mechanism for cyclization and fragmentation products. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：249 / 260

页数：12

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