Ultrafast electron diffraction: determination of radical structure with picosecond time resolution

被引：44

作者：

Cao, J ^{[1
]}

Ihee, H ^{[1
]}

Zewail, AH ^{[1
]}

机构：

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

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 290卷 / 1-3期

关键词：

D O I：

10.1016/S0009-2614(98)00520-X

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：

Using ultrafast electron diffraction (UED) with the temporal diffraction-difference method recently developed in this laboratory, we report accurate determination of the radical (CF2) structure in the dissociation of diiododifluoromethane (CF2I2) with picosecond time resolution. Time-zero was clocked accurately within 2 ps and both iodine atoms were found to be liberated in less than 4 ps. The structure, absolute fraction, and electronic state of the radical were determined. The CF2 radical was found to be in X(1)A(1) ground state with C-F and F ... F distances of 1.30(+/-0.02) Angstrom and 2.06(+/-0.06) Angstrom, respectively. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

引用

页码：1 / 8

页数：8

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