S2 anion


Gas phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Quantity Value Units Method Reference Comment
Δfgas-7.8 ± 5.2kcal/molAcidMoran and Ellison, 1988 
Δfgas<11.0 ± 2.3kcal/molIMRBDillard and Franklin, 1968S- + COS -> S2- + CO. Also S2- + COS -> S3- + CO, etc. to n=6

Reaction thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

(S2- • Carbon disulfide) + Carbon disulfide = (S2- • 2Carbon disulfide)

By formula: (S2- • CS2) + CS2 = (S2- • 2CS2)

Quantity Value Units Method Reference Comment
Δr6.1kcal/molPHPMSHiraoka, Fujimaki, et al., 1994gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr20.cal/mol*KN/AHiraoka, Fujimaki, et al., 1994gas phase; Entropy change calculated or estimated; M

S2- + Hydrogen cation = HS2

By formula: S2- + H+ = HS2

Quantity Value Units Method Reference Comment
Δr329.9 ± 3.7kcal/molD-EAMoran and Ellison, 1988gas phase; B
Quantity Value Units Method Reference Comment
Δr>344.60kcal/molIMRBGoodings, Bohme, et al., 1986gas phase; S- deprotonates H2S, Sn- for n≥2, does not.; B

S2- + Carbon disulfide = (S2- • Carbon disulfide)

By formula: S2- + CS2 = (S2- • CS2)

Quantity Value Units Method Reference Comment
Δr19.1kcal/molPHPMSHiraoka, Fujimaki, et al., 1994gas phase; M
Quantity Value Units Method Reference Comment
Δr29.cal/mol*KPHPMSHiraoka, Fujimaki, et al., 1994gas phase; M

(S2- • 4294967295sulfur) + sulfur = S2-

By formula: (S2- • 4294967295S) + S = S2-

Quantity Value Units Method Reference Comment
Δr92.7 ± 5.2kcal/molN/AMoran and Ellison, 1988gas phase; B

S2- = CS4-

By formula: S2- = CS4-

Quantity Value Units Method Reference Comment
Δr19.1 ± 1.5kcal/molTDAsHiraoka, Fujimaki, et al., 1994, 2gas phase; B

Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Protonation reactions

S2- + Hydrogen cation = HS2

By formula: S2- + H+ = HS2

Quantity Value Units Method Reference Comment
Δr329.9 ± 3.7kcal/molD-EAMoran and Ellison, 1988gas phase
Quantity Value Units Method Reference Comment
Δr>344.60kcal/molIMRBGoodings, Bohme, et al., 1986gas phase; S- deprotonates H2S, Sn- for n≥2, does not.

Ion clustering data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

S2- = CS4-

By formula: S2- = CS4-

Quantity Value Units Method Reference Comment
Δr19.1 ± 1.5kcal/molTDAsHiraoka, Fujimaki, et al., 1994, 2gas phase; B

S2- + Carbon disulfide = (S2- • Carbon disulfide)

By formula: S2- + CS2 = (S2- • CS2)

Quantity Value Units Method Reference Comment
Δr19.1kcal/molPHPMSHiraoka, Fujimaki, et al., 1994gas phase; M
Quantity Value Units Method Reference Comment
Δr29.cal/mol*KPHPMSHiraoka, Fujimaki, et al., 1994gas phase; M

(S2- • Carbon disulfide) + Carbon disulfide = (S2- • 2Carbon disulfide)

By formula: (S2- • CS2) + CS2 = (S2- • 2CS2)

Quantity Value Units Method Reference Comment
Δr6.1kcal/molPHPMSHiraoka, Fujimaki, et al., 1994gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr20.cal/mol*KN/AHiraoka, Fujimaki, et al., 1994gas phase; Entropy change calculated or estimated; M

(S2- • 4294967295sulfur) + sulfur = S2-

By formula: (S2- • 4294967295S) + S = S2-

Quantity Value Units Method Reference Comment
Δr92.7 ± 5.2kcal/molN/AMoran and Ellison, 1988gas phase; B

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Moran and Ellison, 1988
Moran, S.; Ellison, G.B., Photoelectron Spectroscopy of Sulfur Ions, J. Phys. Chem., 1988, 92, 7, 1794, https://doi.org/10.1021/j100318a021 . [all data]

Dillard and Franklin, 1968
Dillard, J.G.; Franklin, J.L., Ion-Molecule Reactions of Negative Ions. I. Negative Ions of Sulfur, J. Chem. Phys., 1968, 48, 5, 2349, https://doi.org/10.1063/1.1669435 . [all data]

Hiraoka, Fujimaki, et al., 1994
Hiraoka, K.; Fujimaki, S.; Aruga, K.; Yamabe, S., Frontier-Controlled Structures of the Gas-Phase A+-(CS2)n Clusters ,A+- = S2+, CS2+, S2-, and CS2-, J. Phys. Chem., 1994, 98, 7, 1802, https://doi.org/10.1021/j100058a014 . [all data]

Goodings, Bohme, et al., 1986
Goodings, J.M.; Bohme, D.K.; Elguindi, K.; Fox, A., Sulphur Anion Chemistry in Hydrocarbon Flames with H2S, OCS, and SO2 Additives, Can. J. Chem., 1986, 64, 4, 689, https://doi.org/10.1139/v86-110 . [all data]

Hiraoka, Fujimaki, et al., 1994, 2
Hiraoka, K.; Fujimaki, S.; Aruga, K., Frontier-controlled Structures of the Gas Phas Clusters A+/-(CS2)n, A+/- = S2+, CS2+, S2-, and CS2-, J. Phys. Chem. (1994), 1994, 98, 7, 1802-1809, https://doi.org/10.1021/j100058a014 . [all data]


Notes

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