The infra-red spectra of hdogenocyclopentanes were recorded in liquid and solid phase. The behaviour observed was compared with litterature data. The results were discussed in terms of cyclopentane conformations and pseudorotation of this ring. ## 1. Introduction Plusieurs travaux gentraux ont Ct
✦ LIBER ✦
Événements Cycliques et Molécules Métastables
✍ Scribed by André Lwoff; Marguerite Lwoff
- Publisher
- Elsevier Science
- Year
- 1962
- Tongue
- English
- Weight
- 868 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0022-5193
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The nature of the Pariser and Parr ''atomic orbitals" in their non empirical and semiempirical procedures is briefly discussed. It appears that the Pari ser and Parr approximations are generally valid if the overlap matrix can be calculated using Slater atomic orbitals and if the Mulliken approxima