ABSTRACTION OF HALOGEN ATOMS BY METHYL RADICALS

reportActive / Technical Report | Accession Number: AD0405045 | Open PDF

Abstract:

Halogen abstraction reactions, described by equation, RX .CH3 yields R. XCH3 were investigated in solution for R CH3, C2H5, iso-C3H7, t- C4H9, PhCH2, CH2Cl, CHCl2, CCl3 and CF3. Secondary deuterium effect was investigated for CH3 and CF3 addition reactions. Rate constants k sub 2Ik sub 1 and k sub 2Brk sub 1 were found to be 45 and 3 x 10 to the 3rd power respectively, k sub 1 being the rate constant of the reaction PhCH2 .CH3 yields PhCH2. CH4. The values of k sub 2Ik sub 1 and k sub 2Brk sub 1 are compared with k sub 2Hk sub 1. The activation energies difference E sub 2I - E sub 1 was determined as - 1.8 Kcalmole for the temperature range 55-85 C.

Author(s):
Szwarc, M. ; Evans, F. W. ; Fox, R. J. ; Feld, M. ; Stenfani, A. P.
Author Organization(s):
SYRACUSE UNIV NY
Supplementary Note:
Report on The Chemistry and Physics of Materials. DOI: 10.21236/AD0405045
Pagination:
0046

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ASD-TDR-63-273
Contract/Grant Number(s):
AF 33(616)-7662
Task Number(s):
736701
Project Number(s):
7367
Monitor Series:
TDR-63-273, ASD
 Subject Terms
Joint Capability Areas:
JCA_1.2.7_Experimentation; JCA_5_Command and Control; JCA_3.2_Engagement; JCA_3_Force Application; JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_3.2.1_Kinetic Means; JCA_1.2.3_Educating; JCA_5.3_Planning; JCA_1.2.5_Lessons Learned; JCA_6.4.1_Secure Information Exchange; JCA_6_Net Centric
Modernization Areas:
Fully Networked C3
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*PHOTOCHEMICAL REACTIONS, *HALIDES, METHYL RADICALS, SOLVENTS, ISOTOPE EFFECT, DEUTERIUM COMPOUNDS, ACTIVATION ENERGY, DEUTERIUM, HYDROGEN, FUELS
Field(s)/Group(s):
Organic Chemistry
Keyword(s):
*ABSTRACTION REACTIONS, ALKANES(TERMINAL), ALKANES(NONTERMINAL), ALKANES(POLY USAGE), ALKENES(TERMINAL), ALKENES(NONTERMINAL), AZO( N N ), BENZENE(RADICAL), BENZENE(MONOSUBSTITUTED), BENZENE(IND), BROMO(BR), CHLORO(CL), ETHENES(C C), ETHANES, FLUORO(F), HALOGENS(POLY USAGE), METHANES(1 C)
Report Date:
1963 Mar 01