Valence-Bond Isomers of Aromatic Systems
β Scribed by Prof. Dr. E. E. van Tamelen
- Publisher
- John Wiley and Sons
- Year
- 1965
- Tongue
- English
- Weight
- 707 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0044-8249
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
3a), X = Br (3b), X = COOH Keeping equimolar amounts of (3b) and brucine in ethanol/ methanol (1 : 1-1 : 2 v,'v) for some time gives a 60 % yieldC71 of a crystalline brucine salt that shows rapid mutarotation in acetone at 20.5 O C (ty2 = 200 sec; extrapolation of the specific rotation to to gives [
Single-zeta and -electron double-zeta basis sets are used to examine some theories of the origin of the stability of the D isomer of O , using ab initio 2 h 4 Ε½ valence-bond procedures. With these basis sets, resonance between covalent-type i.e., . O ΠΈ ΠΈ O valence-bond structures does not lead to a