Nitrogen inversion barriers have been measured for 7-chloro-1,7-diazabicyclo-t2.2.11 heptane and 12.2.21octane; the unusual nature of the bridging nitrogen in bicycle [2.2.1) systems is discussed. The effects of ring strain and heteroatom substitution in raising the barrier to inversion are well kn
Barriers to rotation and nitrogen inversion in hydrazines
โ Scribed by Michael J.S. Dewar; W.Brian Jennings
- Book ID
- 107858074
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- French
- Weight
- 227 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0040-4039
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๐ SIMILAR VOLUMES
A new type of alkylamines possessing high nitrogen inversion-rotation (NIR) barriers is described (in general, these are hindered cyclic amines). The increase in barrier values for these amines is caused by an increase in steric interactions in the NIR transition state due to restrictions for N-subs
## Abstract Phosphorusโnitrogen rotation barriers have been determined by low temperature NMR methods in a variety of compounds of the type RP(X)NR~2~โฒ. The observed activation parameters are concentration and solvent independent. Increasing the bulk of substituents on nitrogen increases the barrie
## Receivzj i August 1967 Ab initio calculations of barriers to internal rotation in propane are carried out by a bond orbital approach. The results are in fair agreement with experiment and indicate that the rotation of the two methyl groups is not independent.