Gas-phase acidity of CF{sub 3}OH

Journal Article · Thu Apr 18 00:00:00 EDT 1996 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/jp953058m· OSTI ID:263155

Huey, L G; Dunlea, E J; Howard, C J ^[1]

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1. NOAA, Boulder, CO (United States)

Ion-molecule reactions of CF{sub 3}O{sup -}, CF{sub 3}O, and CF{sub 3}OH were studied using the flowing afterglow technique to evaluate the thermochemistry of CF{sub 3}OH and related compounds. The gas-phase acidity of CF{sub 3}OH was measured to be {Delta}{sub r}H{sub acid}{degree} = 329.8{+-}2.0 kcal mol{sup -1} by ion-molecule reaction bracketing. A limit on the electron affinity of the CF{sub 3}O radical of = 89.2 kcal mol{sup -1} was also determined. The CF{sub 3}O-H bond strength derived from these results is 124.7{+-}3.6 kcal mol{sup -1}, which is consistent with recent ab initio calculations of the heats of formation CF{sub 3}O and CF{sub 3}OH. 37 refs., 1 fig., 4 tabs.

• OSTI ID: 263155
• Journal Information: Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 16 Vol. 100; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
66 PHYSICS
AFFINITY
ALCOHOLS
ATMOSPHERIC CHEMISTRY
CALCULATION METHODS
CHEMICAL BONDS
FORMATION HEAT
ION-MOLECULE COLLISIONS
ORGANIC FLUORINE COMPOUNDS
PH VALUE
THERMODYNAMICS