Sulfur dioxide

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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:
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. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

(Bromine anion • Hydrogen bromide) + Sulfur dioxide = (Bromine anion • Sulfur dioxide • Hydrogen bromide)

By formula: (Br- • HBr) + O2S = (Br- • O2S • HBr)

Quantity Value Units Method Reference Comment
ΔrH°45.6kJ/molPHPMSCaldwell and Kebarle, 1985gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°79.1J/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M

(Bromine anion • Hydrogen chloride) + Sulfur dioxide = (Bromine anion • Sulfur dioxide • Hydrogen chloride)

By formula: (Br- • HCl) + O2S = (Br- • O2S • HCl)

Quantity Value Units Method Reference Comment
ΔrH°50.6kJ/molPHPMSCaldwell and Kebarle, 1985gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°77.8J/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M

Bromine anion + Sulfur dioxide = (Bromine anion • Sulfur dioxide)

By formula: Br- + O2S = (Br- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°80.8 ± 8.4kJ/molTDAsCaldwell and Kebarle, 1985gas phase; B,M
Quantity Value Units Method Reference Comment
ΔrS°92.0J/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M
Quantity Value Units Method Reference Comment
ΔrG°53. ± 11.kJ/molTDAsCaldwell and Kebarle, 1985gas phase; B

(Bromine anion • Sulfur dioxide) + Sulfur dioxide = (Bromine anion • 2Sulfur dioxide)

By formula: (Br- • O2S) + O2S = (Br- • 2O2S)

Quantity Value Units Method Reference Comment
ΔrH°46.9kJ/molPHPMSCaldwell and Kebarle, 1985gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°78.2J/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M

(Bromine anion • 2Sulfur dioxide) + Sulfur dioxide = (Bromine anion • 3Sulfur dioxide)

By formula: (Br- • 2O2S) + O2S = (Br- • 3O2S)

Quantity Value Units Method Reference Comment
ΔrH°36.kJ/molPHPMSCaldwell and Kebarle, 1985gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°57.7J/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M

Methyl cation + Sulfur dioxide = (Methyl cation • Sulfur dioxide)

By formula: CH3+ + O2S = (CH3+ • O2S)

Quantity Value Units Method Reference Comment
ΔrH°254.kJ/molPHPMSMcMahon, Heinis, et al., 1988gas phase; switching reaction(CH3+)N2, Entropy change calculated or estimated, uses MCA(N2) = 202. kJ/mol; Foster, Williamson, et al., 1974; M

CN- + Sulfur dioxide = (CN- • Sulfur dioxide)

By formula: CN- + O2S = (CN- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°90.8 ± 3.3kJ/molTDAsLarson, Szulejko, et al., 1988gas phase; B,M
Quantity Value Units Method Reference Comment
ΔrS°120.J/mol*KPHPMSLarson, Szulejko, et al., 1988gas phase; M
Quantity Value Units Method Reference Comment
ΔrG°56.07 ± 0.84kJ/molTDAsLarson, Szulejko, et al., 1988gas phase; B

CO3- + Sulfur dioxide = (CO3- • Sulfur dioxide)

By formula: CO3- + O2S = (CO3- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°59.kJ/molHPMSKeesee, Lee, et al., 1980gas phase; switching reaction(O-)CO2, Entropy change calculated or estimated; Fehsenfeld and Ferguson, 1974; M
Quantity Value Units Method Reference Comment
ΔrS°84.J/mol*KN/AKeesee, Lee, et al., 1980gas phase; switching reaction(O-)CO2, Entropy change calculated or estimated; Fehsenfeld and Ferguson, 1974; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
33.296.HPMSKeesee, Lee, et al., 1980gas phase; switching reaction(O-)CO2, Entropy change calculated or estimated; Fehsenfeld and Ferguson, 1974; M

C4H6+ + Sulfur dioxide = (C4H6+ • Sulfur dioxide)

By formula: C4H6+ + O2S = (C4H6+ • O2S)

Quantity Value Units Method Reference Comment
ΔrH°15.kJ/molPIGrover, Walters, et al., 1985gas phase; M

C4H8+ + Sulfur dioxide = (C4H8+ • Sulfur dioxide)

By formula: C4H8+ + O2S = (C4H8+ • O2S)

Quantity Value Units Method Reference Comment
ΔrH°10.kJ/molPIGrover, Walters, et al., 1985gas phase; M

C4H8+ + Sulfur dioxide = (C4H8+ • Sulfur dioxide)

By formula: C4H8+ + O2S = (C4H8+ • O2S)

Quantity Value Units Method Reference Comment
ΔrH°10.kJ/molPIGrover, Walters, et al., 1985gas phase; M

(Chlorine anion • Hydrogen chloride) + Sulfur dioxide = (Chlorine anion • Sulfur dioxide • Hydrogen chloride)

By formula: (Cl- • HCl) + O2S = (Cl- • O2S • HCl)

Quantity Value Units Method Reference Comment
ΔrH°51.5kJ/molPHPMSCaldwell and Kebarle, 1985gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°77.4J/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M

(Chlorine anion • Water) + Sulfur dioxide = (Chlorine anion • Sulfur dioxide • Water)

By formula: (Cl- • H2O) + O2S = (Cl- • O2S • H2O)

Quantity Value Units Method Reference Comment
ΔrH°72.8kJ/molHPMSUpschulte, Schelling, et al., 1984gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°84.5J/mol*KHPMSUpschulte, Schelling, et al., 1984gas phase; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
48.1296.HPMSFehsenfeld and Ferguson, 1974gas phase; switching reaction(Cl- H2O)H2O; M

(Chlorine anion • 2Water) + Sulfur dioxide = (Chlorine anion • Sulfur dioxide • 2Water)

By formula: (Cl- • 2H2O) + O2S = (Cl- • O2S • 2H2O)

Quantity Value Units Method Reference Comment
ΔrH°59.0kJ/molHPMSUpschulte, Schelling, et al., 1984gas phase; From thermochemical cycle; M
Quantity Value Units Method Reference Comment
ΔrS°81.2J/mol*KHPMSUpschulte, Schelling, et al., 1984gas phase; From thermochemical cycle; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
35.296.HPMSUpschulte, Schelling, et al., 1984gas phase; From thermochemical cycle; M

Chlorine anion + Sulfur dioxide = (Chlorine anion • Sulfur dioxide)

By formula: Cl- + O2S = (Cl- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°92.9 ± 8.4kJ/molTDAsCaldwell and Kebarle, 1985gas phase; B,M
ΔrH°87.4 ± 8.4kJ/molIMRELarson and McMahon, 1985gas phase; B
ΔrH°92.9 ± 9.2kJ/molTDEqBohringer, Fahey, et al., 1984gas phase; Relative to HOH..Cl- in Keesee, Lee, et al., 1980; B,M
ΔrH°91.21 ± 0.84kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B,M
ΔrH°87.4kJ/molICRLarson and McMahon, 1984gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
Quantity Value Units Method Reference Comment
ΔrS°90.4J/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M
ΔrS°101.J/mol*KN/ABohringer, Fahey, et al., 1984gas phase; switching reaction(Cl-)H2O), Entropy change calculated or estimated; Keesee and Castleman, 1980; M
ΔrS°87.0J/mol*KN/ALarson and McMahon, 1984gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
ΔrS°97.1J/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrG°65.7 ± 8.4kJ/molTDAsCaldwell and Kebarle, 1985gas phase; B
ΔrG°61.5 ± 8.4kJ/molIMRELarson and McMahon, 1985gas phase; B
ΔrG°62.8 ± 6.7kJ/molTDEqBohringer, Fahey, et al., 1984gas phase; Relative to HOH..Cl- in Keesee, Lee, et al., 1980; B,M
ΔrG°61.9 ± 1.3kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B
ΔrG°61.5kJ/molICRLarson and McMahon, 1984gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
59.4296.FAFehsenfeld and Ferguson, 1974gas phase; switching reaction(Cl-)H2O; M

(Chlorine anion • Sulfur dioxide • Water) + Sulfur dioxide = (Chlorine anion • 2Sulfur dioxide • Water)

By formula: (Cl- • O2S • H2O) + O2S = (Cl- • 2O2S • H2O)

Quantity Value Units Method Reference Comment
ΔrH°49.4kJ/molHPMSUpschulte, Schelling, et al., 1984gas phase; From thermochemical cycle; M
Quantity Value Units Method Reference Comment
ΔrS°109.J/mol*KHPMSUpschulte, Schelling, et al., 1984gas phase; From thermochemical cycle; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
17.296.HPMSUpschulte, Schelling, et al., 1984gas phase; From thermochemical cycle; M

(Chlorine anion • Sulfur dioxide) + Sulfur dioxide = (Chlorine anion • 2Sulfur dioxide)

By formula: (Cl- • O2S) + O2S = (Cl- • 2O2S)

Quantity Value Units Method Reference Comment
ΔrH°51.5 ± 4.2kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B,M
ΔrH°51.5kJ/molPHPMSCaldwell and Kebarle, 1985gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°84.5J/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M
ΔrS°95.0J/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrG°23. ± 9.2kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B

(Chlorine anion • 2Sulfur dioxide) + Sulfur dioxide = (Chlorine anion • 3Sulfur dioxide)

By formula: (Cl- • 2O2S) + O2S = (Cl- • 3O2S)

Quantity Value Units Method Reference Comment
ΔrH°41.84 ± 0.42kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B,M
Quantity Value Units Method Reference Comment
ΔrS°96.7J/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrG°13.0 ± 1.3kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B

(Chlorine anion • 3Sulfur dioxide) + Sulfur dioxide = (Chlorine anion • 4Sulfur dioxide)

By formula: (Cl- • 3O2S) + O2S = (Cl- • 4O2S)

Quantity Value Units Method Reference Comment
ΔrH°36.0 ± 0.84kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B,M
Quantity Value Units Method Reference Comment
ΔrS°97.1J/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrG°6.7 ± 4.2kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B

ClO4- + Sulfur dioxide = (ClO4- • Sulfur dioxide)

By formula: ClO4- + O2S = (ClO4- • O2S)

Quantity Value Units Method Reference Comment
ΔrG°23.8 ± 0.42kJ/molTDAsBanic and Iribarne, 1985gas phase; B

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
24.290.HPMSBanic and Iribarne, 1985gas phase; electric fields; M

(Cesium ion (1+) • Water) + Sulfur dioxide = (Cesium ion (1+) • Sulfur dioxide • Water)

By formula: (Cs+ • H2O) + O2S = (Cs+ • O2S • H2O)

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
18.300.HPMSBanic and Iribarne, 1985gas phase; electric fields; M

(Cesium ion (1+) • 2Water) + Sulfur dioxide = (Cesium ion (1+) • Sulfur dioxide • 2Water)

By formula: (Cs+ • 2H2O) + O2S = (Cs+ • O2S • 2H2O)

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
15.300.HPMSBanic and Iribarne, 1985gas phase; electric fields; M

Cesium ion (1+) + Sulfur dioxide = (Cesium ion (1+) • Sulfur dioxide)

By formula: Cs+ + O2S = (Cs+ • O2S)

Quantity Value Units Method Reference Comment
ΔrH°45.2kJ/molDTMcKnight and Sawina, 1972gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°79.1J/mol*KDTMcKnight and Sawina, 1972gas phase; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
22.300.HPMSBanic and Iribarne, 1985gas phase; electric fields; M

Fluorine anion + Sulfur dioxide = (Fluorine anion • Sulfur dioxide)

By formula: F- + O2S = (F- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°225. ± 9.2kJ/molCIDTLobring, Check, et al., 2003gas phase; B
ΔrH°222. ± 10.kJ/molCIDTSquires, 1992gas phase; B
ΔrH°183.kJ/molICRLarson and McMahon, 1985gas phase; switching reaction(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
ΔrH°183. ± 8.4kJ/molIMRELarson and McMahon, 1983gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B,M
ΔrH°250.kJ/molSAMSRobbiani and Franklin, 1979gas phase; Cl- + CO2ClF --> SO2F- + Cl2, ΔrH>; M
Quantity Value Units Method Reference Comment
ΔrS°100.J/mol*KN/ALarson and McMahon, 1985gas phase; switching reaction(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
ΔrS°96.2J/mol*KN/ALarson and McMahon, 1983gas phase; switching reaction(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
Quantity Value Units Method Reference Comment
ΔrG°153.kJ/molICRLarson and McMahon, 1985gas phase; switching reaction(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
ΔrG°154. ± 8.4kJ/molIMRELarson and McMahon, 1983gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B,M

Hydrogen anion + Sulfur dioxide = (Hydrogen anion • Sulfur dioxide)

By formula: H- + O2S = (H- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°260. ± 67.kJ/molIMRBSheldon, Currie, et al., 1985gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°240. ± 67.kJ/molIMRBSheldon, Currie, et al., 1985gas phase; B

HO- + Sulfur dioxide = (HO- • Sulfur dioxide)

By formula: HO- + O2S = (HO- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°259. ± 12.kJ/molCIDTSquires, 1992gas phase; Dissociative protonation between HCl, MeCHClCO2H; B
ΔrH°>213. ± 13.kJ/molIMRBHierl and Paulson, 1984gas phase; CO2..HO- + SO2 ->. data revised per 92SQU; B

HO2S+ + Sulfur dioxide = (HO2S+ • Sulfur dioxide)

By formula: HO2S+ + O2S = (HO2S+ • O2S)

Quantity Value Units Method Reference Comment
ΔrH°89.1kJ/molPHPMSSzulejko and McMahon, 1992gas phase; M
ΔrH°97.1kJ/molPHPMSMcMahon and Kebarle, 1986gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°108.J/mol*KPHPMSSzulejko and McMahon, 1992gas phase; M
ΔrS°115.J/mol*KPHPMSMcMahon and Kebarle, 1986gas phase; M

HO4S- + Sulfur dioxide = (HO4S- • Sulfur dioxide)

By formula: HO4S- + O2S = (HO4S- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°57.3kJ/molHPMSKeesee and Castleman, 1986gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°109.J/mol*KHPMSKeesee and Castleman, 1986gas phase; M

(Hydronium cation • 3Water) + Sulfur dioxide = (Hydronium cation • Sulfur dioxide • 3Water)

By formula: (H3O+ • 3H2O) + O2S = (H3O+ • O2S • 3H2O)

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
18.300.HPMSBanic and Iribarne, 1985gas phase; electric fields; M

(Hydronium cation • 4Water) + Sulfur dioxide = (Hydronium cation • Sulfur dioxide • 4Water)

By formula: (H3O+ • 4H2O) + O2S = (H3O+ • O2S • 4H2O)

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
11.300.HPMSBanic and Iribarne, 1985gas phase; electric fields; M
11.300.HPMSBanic and Iribarne, 1985gas phase; electric fields; M

Hydronium cation + Sulfur dioxide = (Hydronium cation • Sulfur dioxide)

By formula: H3O+ + O2S = (H3O+ • O2S)

Quantity Value Units Method Reference Comment
ΔrH°92.0kJ/molPHPMSSzulejko and McMahon, 1992gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°95.0J/mol*KPHPMSSzulejko and McMahon, 1992gas phase; M

(NH4+ • Water) + Sulfur dioxide = (NH4+ • Sulfur dioxide • Water)

By formula: (H4N+ • H2O) + O2S = (H4N+ • O2S • H2O)

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
27.300.HPMSBanic and Iribarne, 1985gas phase; electric fields; M

(NH4+ • 2Water) + Sulfur dioxide = (NH4+ • Sulfur dioxide • 2Water)

By formula: (H4N+ • 2H2O) + O2S = (H4N+ • O2S • 2H2O)

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
21.300.HPMSBanic and Iribarne, 1985gas phase; electric fields; M

(NH4+ • 3Water) + Sulfur dioxide = (NH4+ • Sulfur dioxide • 3Water)

By formula: (H4N+ • 3H2O) + O2S = (H4N+ • O2S • 3H2O)

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
15.300.HPMSBanic and Iribarne, 1985gas phase; electric fields; M

(Iodide • Water) + Sulfur dioxide = (Iodide • Sulfur dioxide • Water)

By formula: (I- • H2O) + O2S = (I- • O2S • H2O)

Quantity Value Units Method Reference Comment
ΔrG°37.7 ± 0.42kJ/molTDAsBanic and Iribarne, 1985gas phase; B

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
30.300.HPMSBanic and Iribarne, 1985gas phase; electric fields; M

Iodide + Sulfur dioxide = (Iodide • Sulfur dioxide)

By formula: I- + O2S = (I- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°59.8 ± 8.4kJ/molTDAsCaldwell and Kebarle, 1985gas phase; B,M
ΔrH°53.97 ± 0.42kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B,M
Quantity Value Units Method Reference Comment
ΔrS°73.6J/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M
ΔrS°84.5J/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrG°38. ± 11.kJ/molTDAsCaldwell and Kebarle, 1985gas phase; B
ΔrG°7.11 ± 0.42kJ/molTDAsBanic and Iribarne, 1985gas phase; B
ΔrG°28.5 ± 0.84kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
38.301.HPMSBanic and Iribarne, 1985gas phase; electric fields; M

(Iodide • Sulfur dioxide • Water) + Sulfur dioxide = (Iodide • 2Sulfur dioxide • Water)

By formula: (I- • O2S • H2O) + O2S = (I- • 2O2S • H2O)

Quantity Value Units Method Reference Comment
ΔrG°29.7 ± 0.42kJ/molTDAsBanic and Iribarne, 1985gas phase; B

(Iodide • Sulfur dioxide) + Sulfur dioxide = (Iodide • 2Sulfur dioxide)

By formula: (I- • O2S) + O2S = (I- • 2O2S)

Quantity Value Units Method Reference Comment
ΔrH°42.26 ± 0.42kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B,M
Quantity Value Units Method Reference Comment
ΔrS°90.4J/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrG°15.1 ± 1.3kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B

(Iodide • 2Sulfur dioxide) + Sulfur dioxide = (Iodide • 3Sulfur dioxide)

By formula: (I- • 2O2S) + O2S = (I- • 3O2S)

Quantity Value Units Method Reference Comment
ΔrH°38.5 ± 0.84kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B,M
Quantity Value Units Method Reference Comment
ΔrS°103.J/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrG°7.5 ± 2.5kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B

Nitric oxide anion + Sulfur dioxide = (Nitric oxide anion • Sulfur dioxide)

By formula: NO- + O2S = (NO- • O2S)

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
33.296.SAMSVanderhoff and Heimerl, 1977gas phase; switching reaction(NO+)NO; Puckett and Teague, 1971; M

Nitrogen oxide anion + Sulfur dioxide = (Nitrogen oxide anion • Sulfur dioxide)

By formula: NO2- + O2S = (NO2- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°108.4 ± 0.84kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B,M
ΔrH°102. ± 4.2kJ/molTDEqBohringer, Fahey, et al., 1984gas phase; Relative to HOH..NO2-, Keesee, Lee, et al., 1980; B,M
Quantity Value Units Method Reference Comment
ΔrS°154.J/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M
ΔrS°132.J/mol*KN/ABohringer, Fahey, et al., 1984gas phase; switching reaction(NO2-)H2O, Entropy change calculated or estimated; Lee, Keesee, et al., 1980; M
Quantity Value Units Method Reference Comment
ΔrG°62.3 ± 1.3kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B

(Nitrogen oxide anion • Sulfur dioxide) + Sulfur dioxide = (Nitrogen oxide anion • 2Sulfur dioxide)

By formula: (NO2- • O2S) + O2S = (NO2- • 2O2S)

Quantity Value Units Method Reference Comment
ΔrH°37.7 ± 0.84kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B,M
ΔrH°41.kJ/molHPMSWlodek, Luczynski, et al., 1983gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°90.0J/mol*KHPMSWlodek, Luczynski, et al., 1983gas phase; M
ΔrS°70.3J/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrG°16.7 ± 1.7kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B

(Nitrogen oxide anion • 2Sulfur dioxide) + Sulfur dioxide = (Nitrogen oxide anion • 3Sulfur dioxide)

By formula: (NO2- • 2O2S) + O2S = (NO2- • 3O2S)

Quantity Value Units Method Reference Comment
ΔrH°27.6 ± 0.84kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B,M
Quantity Value Units Method Reference Comment
ΔrS°56.1J/mol*KHPMSKeesee, Lee, et al., 1980gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
ΔrG°10.9 ± 3.3kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B

(NO3 anion • Water) + Sulfur dioxide = (NO3 anion • Sulfur dioxide • Water)

By formula: (NO3- • H2O) + O2S = (NO3- • O2S • H2O)

Quantity Value Units Method Reference Comment
ΔrG°30.kJ/molHPMSBanic and Iribarne, 1985gas phase; From thermochemical cycle,switching reaction, electric fields; M

NO3 anion + Sulfur dioxide = (NO3 anion • Sulfur dioxide)

By formula: NO3- + O2S = (NO3- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°72.0 ± 8.4kJ/molTDEqBohringer, Fahey, et al., 1984gas phase; Relative to HOH..NO3-, Keesee, Lee, et al., 1980; B,M
ΔrH°76.1 ± 5.0kJ/molTDAsWlodek, Luczynski, et al., 1983gas phase; B,M
Quantity Value Units Method Reference Comment
ΔrS°105.J/mol*KN/ABohringer, Fahey, et al., 1984gas phase; switching reaction(NO3-)H2O, Entropy change calculated or estimated; Lee, Keesee, et al., 1980; M
ΔrS°132.J/mol*KHPMSWlodek, Luczynski, et al., 1983gas phase; M
Quantity Value Units Method Reference Comment
ΔrG°40. ± 8.4kJ/molTDEqBohringer, Fahey, et al., 1984gas phase; Relative to HOH..NO3-, Keesee, Lee, et al., 1980; B,M
ΔrG°41.84 ± 0.42kJ/molTDAsBanic and Iribarne, 1985gas phase; B
ΔrG°36.8 ± 3.8kJ/molTDAsWlodek, Luczynski, et al., 1983gas phase; B
ΔrG°44.4kJ/molFAFehsenfeld and Ferguson, 1974gas phase; switching reaction(NO3-)SO2, Entropy change calculated or estimated; Lee, Keesee, et al., 1980; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
41.8299.HPMSBanic and Iribarne, 1985gas phase; electric fields; M

(NO3 anion • Sulfur dioxide) + Sulfur dioxide = (NO3 anion • 2Sulfur dioxide)

By formula: (NO3- • O2S) + O2S = (NO3- • 2O2S)

Quantity Value Units Method Reference Comment
ΔrH°37.kJ/molHPMSWlodek, Luczynski, et al., 1983gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
ΔrS°59.0J/mol*KHPMSWlodek, Luczynski, et al., 1983gas phase; Entropy change is questionable; M

(Sodium ion (1+) • Water) + Sulfur dioxide = (Sodium ion (1+) • Sulfur dioxide • Water)

By formula: (Na+ • H2O) + O2S = (Na+ • O2S • H2O)

Quantity Value Units Method Reference Comment
ΔrH°59.0kJ/molHPMSUpschulte, Schelling, et al., 1984gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°72.8J/mol*KHPMSUpschulte, Schelling, et al., 1984gas phase; M

(Sodium ion (1+) • 3Water) + Sulfur dioxide = (Sodium ion (1+) • Sulfur dioxide • 3Water)

By formula: (Na+ • 3H2O) + O2S = (Na+ • O2S • 3H2O)

Quantity Value Units Method Reference Comment
ΔrG°20.kJ/molHPMSBanic and Iribarne, 1985gas phase; electric fields; M

Sodium ion (1+) + Sulfur dioxide = (Sodium ion (1+) • Sulfur dioxide)

By formula: Na+ + O2S = (Na+ • O2S)

Quantity Value Units Method Reference Comment
ΔrH°79.1kJ/molFAPerry, Rowe, et al., 1980gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
ΔrS°84.9J/mol*KN/APerry, Rowe, et al., 1980gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
ΔrG°53.6kJ/molFAPerry, Rowe, et al., 1980gas phase; Entropy change calculated or estimated; M

(Sodium ion (1+) • Sulfur dioxide) + Sulfur dioxide = (Sodium ion (1+) • 2Sulfur dioxide)

By formula: (Na+ • O2S) + O2S = (Na+ • 2O2S)

Quantity Value Units Method Reference Comment
ΔrH°69.5kJ/molHPMSCastleman, Peterson, et al., 1983gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°107.J/mol*KHPMSCastleman, Peterson, et al., 1983gas phase; M

(Sodium ion (1+) • 2Sulfur dioxide) + Sulfur dioxide = (Sodium ion (1+) • 3Sulfur dioxide)

By formula: (Na+ • 2O2S) + O2S = (Na+ • 3O2S)

Quantity Value Units Method Reference Comment
ΔrH°59.8kJ/molHPMSCastleman, Peterson, et al., 1983gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°113.J/mol*KHPMSCastleman, Peterson, et al., 1983gas phase; M

(Sodium ion (1+) • 3Sulfur dioxide) + Sulfur dioxide = (Sodium ion (1+) • 4Sulfur dioxide)

By formula: (Na+ • 3O2S) + O2S = (Na+ • 4O2S)

Quantity Value Units Method Reference Comment
ΔrH°51.5kJ/molHPMSCastleman, Peterson, et al., 1983gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
ΔrS°110.J/mol*KN/ACastleman, Peterson, et al., 1983gas phase; Entropy change calculated or estimated; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
13.328.HPMSCastleman, Peterson, et al., 1983gas phase; Entropy change calculated or estimated; M

O- + Sulfur dioxide = (O- • Sulfur dioxide)

By formula: O- + O2S = (O- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°250.kJ/molFAFehsenfeld and Ferguson, 1974gas phase; switching reaction(O-)CO2, ΔrH>; Hiller and Vestal, 1980, Keesee and Castleman, 1986; M

(O- • Sulfur dioxide) + Sulfur dioxide = (O- • 2Sulfur dioxide)

By formula: (O- • O2S) + O2S = (O- • 2O2S)

Quantity Value Units Method Reference Comment
ΔrH°55.6kJ/molHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°79.1J/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M

OS+ + Sulfur dioxide = (OS+ • Sulfur dioxide)

By formula: OS+ + O2S = (OS+ • O2S)

Quantity Value Units Method Reference Comment
ΔrH°57.7kJ/molPIErickson and Ng, 1981gas phase; M

Oxygen cation + Sulfur dioxide = (Oxygen cation • Sulfur dioxide)

By formula: O2+ + O2S = (O2+ • O2S)

Quantity Value Units Method Reference Comment
ΔrG°40.kJ/molFAAdams and Bohme, 1970gas phase; switching reaction(O2+)O2; Conway and Janik, 1970; M

O2S+ + Sulfur dioxide = (O2S+ • Sulfur dioxide)

By formula: O2S+ + O2S = (O2S+ • O2S)

Quantity Value Units Method Reference Comment
ΔrH°63.6kJ/molPIErickson and Ng, 1981gas phase; M

O2S- + Sulfur dioxide = (O2S- • Sulfur dioxide)

By formula: O2S- + O2S = (O2S- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°100.4 ± 0.84kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B,M
ΔrH°89.1 ± 5.4kJ/molTDAsVacher, Leduc, et al., 1994gas phase; B
ΔrH°77.40kJ/molN/ADresch, Kramer, et al., 1991gas phase; Both dissociation and electron detachment?; B
ΔrH°76.57kJ/molN/ASnodgrass, Coe, et al., 1988gas phase; Appears to be dissociation + electron detachment; B
Quantity Value Units Method Reference Comment
ΔrS°141.J/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrG°58.2 ± 1.7kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B
ΔrG°43.5 ± 9.2kJ/molTDAsVacher, Leduc, et al., 1994gas phase; B

(O2S- • 5Sulfur dioxide • 2Water) + Sulfur dioxide = (O2S- • 6Sulfur dioxide • 2Water)

By formula: (O2S- • 5O2S • 2H2O) + O2S = (O2S- • 6O2S • 2H2O)

Quantity Value Units Method Reference Comment
ΔrH°15.9 ± 3.8kJ/molTDAsVacher, Leduc, et al., 1994gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°4.60 ± 0.84kJ/molTDAsVacher, Leduc, et al., 1994gas phase; B

(O2S- • 6Sulfur dioxide • Water) + Sulfur dioxide = (O2S- • 7Sulfur dioxide • Water)

By formula: (O2S- • 6O2S • H2O) + O2S = (O2S- • 7O2S • H2O)

Quantity Value Units Method Reference Comment
ΔrH°13.4 ± 2.5kJ/molTDAsVacher, Leduc, et al., 1994gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°2.9 ± 0.84kJ/molTDAsVacher, Leduc, et al., 1994gas phase; B

(O2S- • 6Sulfur dioxide • 2Water) + Sulfur dioxide = (O2S- • 7Sulfur dioxide • 2Water)

By formula: (O2S- • 6O2S • 2H2O) + O2S = (O2S- • 7O2S • 2H2O)

Quantity Value Units Method Reference Comment
ΔrH°15.5 ± 2.9kJ/molTDAsVacher, Leduc, et al., 1994gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°2.5 ± 0.84kJ/molTDAsVacher, Leduc, et al., 1994gas phase; B

(O2S- • Sulfur dioxide) + Sulfur dioxide = (O2S- • 2Sulfur dioxide)

By formula: (O2S- • O2S) + O2S = (O2S- • 2O2S)

Quantity Value Units Method Reference Comment
ΔrH°33.9 ± 1.3kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
ΔrH°35.kJ/molHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°66.9J/mol*KHPMSKeesee, Lee, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrG°16.3 ± 0.84kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

(O2S- • 2Sulfur dioxide) + Sulfur dioxide = (O2S- • 3Sulfur dioxide)

By formula: (O2S- • 2O2S) + O2S = (O2S- • 3O2S)

Quantity Value Units Method Reference Comment
ΔrH°26.8 ± 0.84kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°12.6 ± 0.84kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

(O2S- • 3Sulfur dioxide) + Sulfur dioxide = (O2S- • 4Sulfur dioxide)

By formula: (O2S- • 3O2S) + O2S = (O2S- • 4O2S)

Quantity Value Units Method Reference Comment
ΔrH°22.6 ± 1.3kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°9.20 ± 0.84kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

(O2S- • 4Sulfur dioxide) + Sulfur dioxide = (O2S- • 5Sulfur dioxide)

By formula: (O2S- • 4O2S) + O2S = (O2S- • 5O2S)

Quantity Value Units Method Reference Comment
ΔrH°17.6 ± 0.84kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°5.02 ± 0.84kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

(O2S- • 5Sulfur dioxide) + Sulfur dioxide = (O2S- • 6Sulfur dioxide)

By formula: (O2S- • 5O2S) + O2S = (O2S- • 6O2S)

Quantity Value Units Method Reference Comment
ΔrH°15.1 ± 1.3kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°3.8 ± 0.84kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

(O2S- • 6Sulfur dioxide) + Sulfur dioxide = (O2S- • 7Sulfur dioxide)

By formula: (O2S- • 6O2S) + O2S = (O2S- • 7O2S)

Quantity Value Units Method Reference Comment
ΔrH°14.2 ± 0.84kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°2.1 ± 0.84kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

(O2S- • 7Sulfur dioxide) + Sulfur dioxide = (O2S- • 8Sulfur dioxide)

By formula: (O2S- • 7O2S) + O2S = (O2S- • 8O2S)

Quantity Value Units Method Reference Comment
ΔrH°14.2 ± 1.3kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°1. ± 5.0kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

(O2S- • 8Sulfur dioxide) + Sulfur dioxide = (O2S- • 9Sulfur dioxide)

By formula: (O2S- • 8O2S) + O2S = (O2S- • 9O2S)

Quantity Value Units Method Reference Comment
ΔrH°12.6 ± 1.7kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°1. ± 6.3kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

(O2S- • 9Sulfur dioxide) + Sulfur dioxide = (O2S- • 10Sulfur dioxide)

By formula: (O2S- • 9O2S) + O2S = (O2S- • 10O2S)

Quantity Value Units Method Reference Comment
ΔrH°12.6 ± 2.5kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°0.4 ± 9.6kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

(O2S- • Sulfur dioxide • Oxygen) + Sulfur dioxide = (O2S- • 2Sulfur dioxide • Oxygen)

By formula: (O2S- • O2S • O2) + O2S = (O2S- • 2O2S • O2)

Quantity Value Units Method Reference Comment
ΔrH°19.2 ± 1.7kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°10. ± 8.4kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

(O2S- • 2Sulfur dioxide • Oxygen) + Sulfur dioxide = (O2S- • 3Sulfur dioxide • Oxygen)

By formula: (O2S- • 2O2S • O2) + O2S = (O2S- • 3O2S • O2)

Quantity Value Units Method Reference Comment
ΔrH°15.1 ± 1.7kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°6. ± 13.kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

(O2S- • Oxygen) + Sulfur dioxide = (O2S- • Sulfur dioxide • Oxygen)

By formula: (O2S- • O2) + O2S = (O2S- • O2S • O2)

Quantity Value Units Method Reference Comment
ΔrH°46.0 ± 4.2kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°26. ± 9.2kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

O3S- + Sulfur dioxide = (O3S- • Sulfur dioxide)

By formula: O3S- + O2S = (O3S- • O2S)

Quantity Value Units Method Reference Comment
ΔrH°55.65 ± 0.42kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°31.8 ± 0.84kJ/molTDAsKeesee, Lee, et al., 1980gas phase; B

(O3S- • Sulfur dioxide • Oxygen) + Sulfur dioxide = (O3S- • 2Sulfur dioxide • Oxygen)

By formula: (O3S- • O2S • O2) + O2S = (O3S- • 2O2S • O2)

Quantity Value Units Method Reference Comment
ΔrH°23.8 ± 2.5kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°15. ± 8.8kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

(O3S- • Oxygen) + Sulfur dioxide = (O3S- • Sulfur dioxide • Oxygen)

By formula: (O3S- • O2) + O2S = (O3S- • O2S • O2)

Quantity Value Units Method Reference Comment
ΔrH°27.2 ± 3.3kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°18. ± 9.2kJ/molTDAsVacher, Jorda, et al., 1992gas phase; B

O4S- + Sulfur dioxide = (O4S- • Sulfur dioxide)

By formula: O4S- + O2S = (O4S- • O2S)

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
28.296.FAFehsenfeld and Ferguson, 1974gas phase; switching reaction(SO4-)H2O; M

References

Go To: Top, Ion clustering data, Notes

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

Caldwell and Kebarle, 1985
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Grover, Walters, et al., 1985
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Notes

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