## Abstract STOβ3G calculations show that the nitrocyclopropyl anion prefers a triplet ground state with a tetrahedral C(Ξ±)βatom and a perpendicular orientation of the threeβmembered ring and the NO~2~βgroup, **1**β90Β° __(Table 1)__. This unusual result is in agreement with recent experimental find
Computational prediction of a ground-state triplet arylnitrenium ion and a possible ground-state triplet silylene
β Scribed by Christopher J. Cramer; Daniel E. Falvey
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 295 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Density functional calculations predict that bis- (2,6-di4-butyl)phenylnitrenium has a triplet gmund stal~ and that the corresponding silylene has essentially degenerate singlet and triplet states. The steric bulk of the aryl ligand strongly destabilizes the singlets in each case relative to the triplets; the latter can more readily accommodate large valence angles at the nitrogen ot silicon atom.
π SIMILAR VOLUMES
parameters was carried out by the method of least squares with anisotropic temperature factors. After the final cycle including all observed F(hkl) the factor R had a value 0.10. X-ray crystallographic investigation showed, that the previously unobserved structure of a dicubane is in fact present. T
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