Chemical effects of the (n,gamma) activation of bromine in the alkyl bromides. Isomerization in teh bromobutanes
The four isomeric bromobutanes were irradiated with low neutron fluxes (total dose <200 r) in order to study carbon chain isomerization. All four isomers were found to undergo fragmentation to bromomethane, bromoethane, and bromopropanes to the extent of 4.5 to 6% of the radiobromime products. They also yield 10 to 20% high-boiling organic bromides, mostly dibroraobutanes. For three of the isomers, the organic retention of radiobromine is in the expected range of 30 to 40a; (CH3)3CBr gave nearly 100% organic retention. Carbon chain isomerization was present for all isomers, but it was highest for (CH3)3/CBr, 13.6% as 2-bromobutane. The unusual product proportions of (CH3)3CBr are explained by the formation of (CH3)3C c ations or radicals; this explanation is supported by the fact that the (CH3)3/ CBr ratio of radioactive 2-bromobutane to 2-bromo-2-methylpropane, 0.2, is close to the 0.23 ratio observed for the equilibration of n-butane with 2-methylpropane in the presence of AlBr3 at 25°C.
- Research Organization:
- Atomic Energy of Canada, Ltd., Chalk River, Ont.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-14-021509
- OSTI ID:
- 4172483
- Journal Information:
- Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 8 Vol. 64; ISSN 0022-3654
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
Activation of hydrogen by cationic cyclopentadienyl molybdenum dimers with sulfido ligands. 4. A cationic complex with an allyl thiolate ligand
Reactivity of bromine atom complexes with organic compounds