Dedicated to Professor Dr. Roland Zimmermann on the occasion of his 60th birthday Two basic methods to assess correlation effects on an ab initio level for excited states in semiconductors and insulators are presented. The construction of an effective Hamiltonian and a Green's function approach are
Ab initio calculations related to the formation of propynal and propadienone in interstellar clouds
β Scribed by Robert G.A.R. Maclagan; Murray J. McEwan; Graham.B.I. Scott
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 487 KB
- Volume
- 240
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
The proposal that propynal, CHCCHO, observed in interstellar clouds is formed by the ion molecule reaction of C2H ~and CO has been investigated in a G2 study. The calculations show that propadienone CH2CCO could be formed by this reaction but not propynal. At the G2 level of theory, propadienone is calculated to be lower in energy than propynal.
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A number of important reactions involved in the formation and metabolism of N-nitrosamines have been studied using a modified reaction field method which treats the solute quantum mechanically and the solvent as a polarized dielectric.
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