Spectroscopy and dynamics of A [2B1] allyl radical

被引：24

作者：

Castiglioni, Luca ^{[1
]}

Bach, Andreas ^{[1
]}

Chen, Peter ^{[1
]}

机构：

[1] ETH, Organ Chem Lab, CH-8093 Zurich, Switzerland

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2006年 / 8卷 / 22期

关键词：

D O I：

10.1039/b602412b

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：

The A [B-2(1)] <- X[(2)A(2)] band system between 380 and 420 nm was observed in a supersonic jet expansion. The allyl radical was found to dissociate following electronic excitation, releasing a hydrogen atom. Monitoring the appearance of the hydrogen atom photoproduct as a function of the excitation laser wavelength, similar spectral features are observed as in earlier absorption experiments. Time- and frequency-resolved photoionization of the hydrogen atom product provides information on the unimolecular dissociation dynamics. The measured dissociation rates and kinetic energy releases of both allyl radical, C3H5, and partially deuterated allyl radical, C3DH4, suggest direct loss of the central hydrogen atom, leading to allene as the major product.

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页码：2591 / 2598

页数：8

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