PHOTOINITIATED PROCESSES IN COMPLEXES - SUBPICOSECOND STUDIES OF CO2-HI AND STEREOSPECIFICITY IN AR-HX

被引：50

作者：

JAQUES, C ^{[1
]}

VALACHOVIC, L ^{[1
]}

IONOV, S ^{[1
]}

BOHMER, E ^{[1
]}

WEN, Y ^{[1
]}

SEGALL, J ^{[1
]}

WITTIG, C ^{[1
]}

机构：

[1] UNIV SO CALIF,DEPT CHEM,LOS ANGELES,CA 90089

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1993年 / 89卷 / 10期

关键词：

D O I：

10.1039/ft9938901419

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：

Build-up times for the OH product of photoinduced reactions in CO2-HI complexes were measured for the photolysis wavelength range 235-263 nm by using the subpicosecond resolution pump-probe method pioneered by Zewail and co-workers. There is reasonable accord with.theory and recent results from crossed-molecular-beams experiments. To illustrate the squeezed-atom effect, complementary measurements of hydrogen atom translational-energy distributions were carried out by using the high resolution high-n Rydberg time-of-flight (HRTOF) method of Welge and co-workers. Prototypical cases of Ar-HBr and Ar-HI complexes are reported. The former illustrates the squeezed-atom effect or caging of the exiting hydrogen. The latter is dominated by the formation of radical-molecule complexes. Extensions to other radical-molecule complexes are discussed.

引用

页码：1419 / 1425

页数：7

共 40 条

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