Electron spin resonance studies of hydrogen and deuterium bombardment of unsaturated hydrocarbons at 77k. Technical report
The interaction of free atoms and radicals with unsaturated compounds has been a field of considerable interest. In this present work, the reactions of solid unsaturated hydrocarbons at 77K with gaseous hydrogen atoms are studied by electron spin resonance (esr). The hydrogen atom adds directly to the terminal position of the double bond of trans-2-butene, 2,3-dimethyl-1, 3-butadiene, 2-methyl-1-butene-3-yne, 3,3-dimethyl-1-butene, isobutylene, ethylene, and propylene to produce the sec-butyl, 2,3-dimethyl-2-butenyl, 1,1-dimethyl-2-propynyl, 1,2,2-trimethyl propyl, t-butyl, ethyl, and isopropyl radicals, respectively. The addition reaction of H atoms to trans-1,3-pentadiene occurs at the terminal carbon atom of the terminal double bond to produce the 1-methyl-2-butenyl radical. Confirmation of an addition reaction was made by bombarding the unsaturate first with hydrogen and then with deuterium. The two radicals can be distinguished by their esr spectra. On bombardment of allene with H atoms the allenyl radical was observed. This radical was produced by an abstraction of a hydrogen atom from allene.
- Research Organization:
- Army Armament Research and Development Command, Aberdeen Proving Ground, MD (USA). Ballistics Research Lab.
- OSTI ID:
- 5598535
- Report Number(s):
- AD-A-074264/3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKENES
ALKYL RADICALS
ATOMS
BUTADIENE
BUTENES
CHARGED PARTICLES
CHEMICAL BONDS
CHEMICAL REACTIONS
CRYOGENIC FLUIDS
CRYOGENICS
DEUTERONS
DIENES
ELECTRON SPIN RESONANCE
ELEMENTS
ETHYL RADICALS
FLUIDS
HYDROCARBONS
HYDROGEN
ISOTOPES
MAGNETIC RESONANCE
NONMETALS
ORGANIC COMPOUNDS
PENTADIENES
POLYENES
PROPELLANTS
PROPYL RADICALS
RADICALS
RADIOISOTOPES
RESONANCE