The photocurrent and photoionization charge of anthracene in various non-polar solvents have been measured under the thirdharmonics of a Nd-YAG laser excitation. They are quadratically proportional to the laser pulse energy, though those of water are cubically proportional to them. Anthracene exhibi
Effect of substituents on electron energy redistribution in uracil derivatives and their ionization in polar solvents
β Scribed by Y. U. P. Blagoy; G. G. Sheina; A. V. Luzanov; L. K. Silina; V. F. Pedash; Y. U. V. Rubin; E. A. Leibina
- Publisher
- John Wiley and Sons
- Year
- 1980
- Tongue
- English
- Weight
- 319 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0020-7608
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β¦ Synopsis
Abstract
It is assumed that the chemical reactivity may be described in terms of the appropriate energy density calculated for each atom. Indices of energy density for deprotonization of uracil, 5βnitroβ and 5βaminouracil are presented. The results of a quantum chemical calculation of the deprotonization energy are in qualitative agreement with experimental p__K__ and Ξ__H__ values.
π SIMILAR VOLUMES
We conducted Monte Carlo simulations of polar solutions by explicitly treating the effect of electronic polarizability of solvent molecules. Based on these data, we calculated the energy-gap dependence of electron-transfer rates. It was found that a considerable asymmetry of the energy-gap dependenc
The Wittig reaction between a phosphonium salt and a carbonyl compound in the presence of alkoxide ion in protic solvents may occur by two competing mechanistic courses (see Scheme).
2,3-and 2,5-Dicyanobenzobarrelenes 5 and 6 have been synthesized and subjected to triplet-sensitized photoisomerization. 2,3-Dicyanobenzobarrelene 5 gave two di-p-methane rearrangement products 7 and 8 and a [2p+2p]-cycloaddition product 9. However, 2,5-dicyanobenzobarrelene 6 formed a single di-p-m