Methyl fluoride formation from thermal fluorine-18 reaction with dimethylmercury

Journal Article · Thu Sep 29 00:00:00 EDT 1983 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100243a035· OSTI ID:5433608

McKeown, F P; Iyer, R S; Rowland, F S

The attack of fluorine atoms (F) on dimethylmercury ((CH/sub 3/)/sub 2/Hg) with the formation of methylfluoride (CH/sub 3/F) has been observed in the gas phase by using radioactive /sup 18/F thermalized by multiple collisions with sulfur hexafluoride(SF6). Ca 9.6% of thermal /sup 18/F atoms are found as CH/sub 3//sup 18/F, with the remainder reacting with (CH/sub 3/)/sub 2/Hg to form other products, mainly, H/sup 18/F. The rate constant k/sub 5/ for this substitution reaction has been measured at 287/sup 0/K to be 0.68 times as fast for thermal /sup 18/F as hydrogen abstraction from methane and 1.67 times as fast as hydrogen abstraction from hydrogen. These relative rates correspond to an absolute rate constant k/sub 5/ = (4.6 +- 0.4) x 10/sup -11/ cm/sup 3/ molecule/sup -1/s/sup -1/. The total rate constant for all reactions with (CH/sub 3/)/sub 2/ Hg is 4.7 +- 0.5) x 10/sup -10/cm/sup 3/ molecule/sup -1/s/sup -1/. 3 figures, 4 tables.

• Research Organization: Univ. of California, Irvine
• DOE Contract Number: AT03-76ER70126
• OSTI ID: 5433608
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 87:20; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400701* -- Radiochemistry & Nuclear Chemistry-- Hot-Atom Chemistry
ALKANES
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMISTRY
COMPLEXES
DATA
EXPERIMENTAL DATA
FLUIDS
FLUORIDES
FLUORINATED ALIPHATIC HYDROCARBONS
FLUORINE 18
FLUORINE 19 TARGET
FLUORINE COMPOUNDS
FLUORINE ISOTOPES
GASES
HALIDES
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
HOT ATOM CHEMISTRY
HOURS LIVING RADIOISOTOPES
HYDROCARBONS
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
ISOTOPES
KINETICS
LIGHT NUCLEI
MEDIUM TEMPERATURE
MERCURY COMPLEXES
METHYL FLUORIDE
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
RADIOCHEMISTRY
RADIOISOTOPES
REACTION KINETICS
SULFUR COMPOUNDS
SULFUR FLUORIDES
TARGETS
TEMPERATURE DEPENDENCE
YIELDS