Theoretical studies of interstellar isomers
โ Scribed by D. J. DeFrees; A. D. McLean
- Book ID
- 105568404
- Publisher
- Springer Netherlands
- Year
- 1986
- Tongue
- English
- Weight
- 127 KB
- Volume
- 16
- Category
- Article
- ISSN
- 1573-0875
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๐ SIMILAR VOLUMES
Semi-empirical UNDO methods predict that 2 of 23 structurally distinct C6& isomers and 4 of 143 C7uH2 isomers have particularly low heats of formation. These isomers represent either 1 ,t-addition across a 6: 6-ring fusion or 1,4-addition across a ii-ring, with both hydrogens externally bound. Fully
Ab initio quantum chemical calculations on normal and hypervalent structures of the HC10 3 species have been performed. Four minima were located at the MP2/6-31G(d) level, after many connectivities were investigated. Geometries and frequencies were determined at the QCISD/6-311G(2d, 2p) level. Singl
## Abstract The ^1^H and ^13^C NMR chemical shifts of __cis__โ and __trans__โprotopinium salts were measured and calculated. The calculations of the chemical shifts consisted of conformational analysis, geometry optimization (RHF/6โ31G\*\* method) and shielding constants calculations (B3LYP/6โ31G\*