The fluoride affinity of SO2

Lobring, Kim C.; Check, Catherine E.; Sunderlin, Lee S.

doi:10.1016/s1387-3806(02)00950-8

Cited by 12 publications

(9 citation statements)

References 46 publications

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“…Caldwell and Kebarle (11,43) collected an extensive set of measurements of the binding energies of three or four halide ions to different ligands, and other studies have added to this work (44)(45)(46). Representative experimental data are shown in Table 5.…”

Section: Periodic Trendsmentioning

confidence: 99%

The bond dissociation energies of SO₃X (X = F, Cl, Br, and I)

Hao¹,

Gilbert²,

Sunderlin³

2005

Can. J. Chem.

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The gas-phase strengths of the SO 3 -X -bonds (X = Cl, Br, and I) have been determined to be 222 ± 13, 179 ± 11, and 161 ± 9 kJ/mol, respectively, by measuring thresholds for collision-induced dissociation in a flowing afterglow-tandem mass spectrometer. An upper limit of D(SO 3 -F -) ≤ 488 ± 19 kJ/mol was also determined. The periodic trends in the halide affinities of SO 3 closely parallel those for SO 2 and other Lewis acids. Bond strengths computed using the B3LYP, MP2, QCISD(T), and other models with several basis sets are generally lower than experiment.Résumé : Utilisant un spectromètre de masse en tandem à écoulement postluminescence, on a mesuré les seuils de dissociation induite par une collision et on en déduit que les forces, en phase gazeuse, des liaisons SO 3 -X -(X = Cl, Br et I) sont respectivement de 222 ± 13, 179 ± 11 et 161 ± 9 kJ/mol. On a aussi déterminé que la limite supérieure de D(SO 3 -F -) est ≤ 488 ± 19 kJ/mol. Les tendances périodiques dans les affinités des halogénures pour le SO 3 sont parallèles à celles pour le SO 2 et pour d'autres acides de Lewis. Les forces des liaisons calculées par les méthodes B3LYP, MP2, QCISD(T) et d'autres modèles en utilisant plusieurs ensembles de bases sont généralement inférieures aux valeurs expérimentales.

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Section: Periodic Trendsmentioning

confidence: 99%

The bond dissociation energies of SO₃X (X = F, Cl, Br, and I)

Hao¹,

Gilbert²,

Sunderlin³

2005

Can. J. Chem.

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“…If such an average energy of the anion is in between the two different CID thresholds for KF À 3 and CaF À 3 destruction, a significant level of differential destruction of the fragile anion can be achieved over the one that is more strongly bound. A good example of the CID method is shown [12] with the destruction of the F-bond in SO 2 -F À .…”

Section: Cid -A Low Energy Methods For Molecular Isobar Separationmentioning

confidence: 99%

Studies of anions from sputtering III: The 41K background in measurement by AMS

Zhao

Eliades

Liu

et al. 2010

Nuclear Instruments and Methods in Physics Research Section B:

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“…Sulfur oxyfluoride anions such as SOF 4 − , SOF 5 − , SO 2 F − , and SO 2 F 2 − are formed in SF 6 /H 2 O negative corona discharge, and their structure, bonding, and thermochemistry have been investigated by experimental and theoretical methods [36]. In particular, mass spectrometric experiments and G3 calculations [55] indicate that the gaseous F SO 2 − has a sulfur-fluorine connectivity and a non-planar structure of C s symmetry. From the measured fluoride affinity of SO 2 , 54 ± 2 kcal mol −1 , the H • f of F SO 2 − is obtained as −184 ± 2 kcal mol −1 .…”

Section: Negative Ion-molecule Reactionsmentioning

confidence: 99%