Bond Dissociation Energy in Trifluoride Ion

Artau, Alexander; Nizzi, Katrina Emilia; Hill, Brian T.; Sunderlin, Lee S.; Wenthold, Paul G.

doi:10.1021/ja001613e

Cited by 62 publications

(99 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…38, 39), F 2 − of −301 kJ mol -1 (Ref. 40) and SF x + given elsewhere, 41 the calculated enthalpies of reaction for (5) Although not photoexciting SF 6 above 35 eV, our study clearly shows the onsets for these features.…”

Section: Resultssupporting

confidence: 52%

Vacuum-UV negative photoion spectroscopy of SF5CF3

Simpson

Tuckett

Dunn

et al. 2008

The Journal of Chemical Physics

View full text Add to dashboard Cite

___________________________________________________________________________________Ion pair formation, generically described as AB → A + + B − , from vacuum-UV photoexcitation of trifluoromethyl sulfur pentafluoride, SF 5 CF 3 , has been studied by anion mass spectrometry using synchrotron radiation in the photon energy range 10−35 eV. The anions F − , F 2 − and SF x − (x = 1−5) are observed. With the exception of SF 5 − , the anions observed show a linear dependence of signal with pressure, showing that they arise from ion pair formation. SF 5 − arises from dissociative electron attachment, following photoionization of SF 5 CF 3 as the source of low-energy electrons. Cross sections for anion production are put on to an absolute scale by calibration of the signal strengths with those of F − from both SF 6 and CF 4 .Quantum yields for anion production from SF 5 CF 3 , spanning the range 10 −7 to 10 −4 , are obtained using vacuum-UV absorption cross sections. Unlike SF 6 and CF 4 , the quantum yield for F − production from SF 5 CF 3 increases above the onset of photoionization.3

show abstract

Section: Resultssupporting

confidence: 52%

Vacuum-UV negative photoion spectroscopy of SF5CF3

Simpson

Tuckett

Dunn

et al. 2008

The Journal of Chemical Physics

View full text Add to dashboard Cite

show abstract

“…0.1−0.2 eV. First, although it is not accurate to equate an AE 298 to the enthalpy of the corresponding unimolecular reaction at 298 K because of thermal effects, 26 28 In calculations for F − , we use the value of −249 using the electron affinity (EA) reported by Blondel et al, 29 and for F 2 − , the value of −301 which uses the EA reported by Artau et al 30 The values used for Cl − , Br − and I − are −227, −213, and −188, respectively, which use experimental EAs from a recent review paper. 31 For CF − we use a value of −63, using the EA(CF) = 3.3 ± 1.1 eV (reported as a lower limit), 32 and for CF 2 − a value of −199 which uses the EA(CF 2 ) = 0.179 ± 0.005 eV.…”

Section: Thermochemistry: General Commentsmentioning

confidence: 99%

Vacuum-UV negative photoion spectroscopy of CF3Cl, CF3Br, and CF3I

Simpson

Tuckett

Dunn

et al. 2009

The Journal of Chemical Physics

View full text Add to dashboard Cite

show abstract

“…After all, ClF 2 -and BrF 2 -are well-studied anions with Br [156] and Cl [157] as central atoms. However, all four trihalide anions, X 3 -, have comparable X -ÁÁÁX 2 bond energies [158] suggesting that fluorine as a Lewis acid acceptor site is not unreasonable.…”

Section: Issuementioning

confidence: 99%