期刊
JOURNAL OF PHYSICAL CHEMISTRY A
卷 114, 期 2, 页码 1134-1143出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp909455a
关键词
-
资金
- Research Corporation [CC6843/6814]
- College of Liberal Arts and Sciences at Villanova University
The potential energy surfaces associated with the reactions of chromium oxide cation (CrO+) with ethylene have been characterized using density functional, coupled-cluster, and multireference methods, Our calculations show that the most probable reaction involves the formation of acetaldehyde and Cr+ via a hydride transfer involving the metal center. Our calculations support previous experimental hypotheses that a four-membered ring intermediate plays an important role in the reactivity of the system. We have also characterized a number of viable reaction pathways that lead to other products, including ethylene oxide. Due to the experimental observation that CrO+ can activate carbon-carbon bonds, a reaction pathway involving C-C bond cleavage has also been characterized, Since many of the reactions involve a change in the spin state in going from reactants to products, locations of these spin surface crossings are presented and discussed. The applicability of methods based on Hartree-Fock orbitals is also discussed.
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