Intramolecular kinetic isotope effect in the reaction of fluorine atoms with methane-d$sub 2$ (CH$sub 2$$D$$sub 2$)

Journal Article · Mon Dec 31 23:00:00 EST 1973 · J. Chem. Phys., v. 60, no. 1, pp. 49-52

OSTI ID:4334039

Persky, A

The relative tates of the two competing isotopic reactions: F + CH/sub 2/ D/sub 2/ yields HF + CHD/sub 2/ and F + CH/sub 2/D/sub 2/ yields DF + CH/sub 2/D, were measured in a fast flow system by direct mass spectrometric analysis of the reaction products in the temperature range of 159 to 298 deg K. The ratio of rates can be exprssed as an Arrhenius type equation: k/sub F/ + HCHD/sub 2//k/sub F/ + DCH/sub 3/D = (0.81 + 0.03) expSTA(275 plus or minus 15)/ RT!. The relation between the intramolecular isotope effect k/sub F + CH/sub 4//k/sub F/ + CD/sub 4/ is discused with regard to secondary isotope effects in the fluorine atom + methane reaction. (auth)

• Research Organization: Department of Isotope Research, The Weizmann Institute of Science, Rehovot, Israel
• NSA Number: NSA-29-023997
• OSTI ID: 4334039
• Journal Information: J. Chem. Phys., v. 60, no. 1, pp. 49-52, Journal Name: J. Chem. Phys., v. 60, no. 1, pp. 49-52; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

*DEUTERIUM-- ISOTOPE EFFECTS
ARRHENIUS EQUATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DEUTERIUM COMPOUNDS
FLUORINE
LOW TEMPERATURE
MEDIUM TEMPERATURE
METHANE
N40220* --Chemistry--Inorganic
Organic
& Physical Chemistry--Isotopic Effects