Substituent effects on the stability of carbodications
β Scribed by Winn Peebles; Richard M. Pagni; Robert C. Haddon
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- French
- Weight
- 230 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
β¦ Synopsis
Sunmary: Disubstituted phenalenyl cations undergo deuterium exchange in CF3SO30 by a mechanism that involves protonation of the ring to form carbodications. The effect of a variety of substituents on this process is reported.
π SIMILAR VOLUMES
The adduct ions of two tetramolecular G-quadruplexes formed from the d(TGGGGT) and d(TTGGGGGT) single strands with a group of cationic porphyrins, with different charges and substituents, and one neutral porphyrin, were investigated by ESI-MS and ESI-MS/MS in the negative ion mode. Formation of [Q +
We report a kinetic study which indicates that the stabilizing effect of the methoxy group in a pure rsdieal system is small. The rates of d~com~s~tion of I (diphenyl ether, l.50Β° to 180Β° C) and II (toluene, 50' to 80' C) were monitored by measuring nitrogen evolution using a constsnt volume variab
The unimolecular rearrangement of XSnBP (X ΒΌ H, Li, BeH, BH 2 , CH 3 , NH 2 , OH, and F) to Sn@PX is considered using B3LYP and QCISD calculations. The theoretical findings suggest that the doubly bonded Sn@PX molecule is intrinsically more stable than the triply bonded XSnBP species, regardless of