GAS-PHASE THERMOCHEMISTRY OF VH AND CRH

被引:45
|
作者
CHEN, YM
CLEMMER, DE
ARMENTROUT, PB
机构
[1] Department of Chemistry, University of Utah, Salt Lake City
关键词
D O I
10.1063/1.464948
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 homolytic bond dissociation energies of the transition-metal neutral hydrides, D(o)(M-H) (M=V, Cr), are experimentally determined by using guided ion beam tandem mass spectrometry to measure the kinetic energy dependence of the endothermic hydride abstraction reactions of M+ with mono-, di-, and trimethylamine. From the thresholds of these reactions, we derive the 0 K values of D(o)(V-H)=2.13+/-0.07 eV and D(o)(Cr-H)=1.93+/-0.07 eV. This thermochemistry is compared with theoretical values and previous experimental results.
引用
收藏
页码:4929 / 4936
页数:8
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