Sulfur dioxide

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.

Phase change data

Go To: Top, Ion clustering data, References, Notes

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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tfus200.75KN/AHoffman and Vanderwerf, 1946Uncertainty assigned by TRC = 0.5 K; TRC
Quantity Value Units Method Reference Comment
Ttriple197.64KN/AGiauque and Stephenson, 1938Uncertainty assigned by TRC = 0.05 K; Temp. Scale based on T0 = 273.10 K; TRC
Quantity Value Units Method Reference Comment
Ptriple0.0167barN/AGiauque and Stephenson, 1938Uncertainty assigned by TRC = 0.000067 bar; TRC
Quantity Value Units Method Reference Comment
Tc430.34KN/ATravers and Usher, 1906Uncertainty assigned by TRC = 0.4 K; TRC

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
24.9263.N/AGiauque and Stephenson, 1938, 2Based on data from 200. to 263. K.; AC
24.9263.CGiauque and Stephenson, 1938, 2AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) A B C Reference Comment
177.7 to 263.3.48586668.225-72.252Stull, 1947Coefficents calculated by NIST from author's data.
263. to 414.94.37798966.575-42.071Stull, 1947Coefficents calculated by NIST from author's data.

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:

Ion clustering data

Go To: Top, Phase change data, References, Notes

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, Phase change data, Ion clustering data, Notes

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

Hoffman and Vanderwerf, 1946
Hoffman, K.R.; Vanderwerf, C.A., Addition Compounds of Sulfur Dioxide with Pyridine and the Picolines, J. Am. Chem. Soc., 1946, 68, 997. [all data]

Giauque and Stephenson, 1938
Giauque, W.F.; Stephenson, C.C., Sulfur Dioxide. The Heat Capacity of Solid and Liquid. Vapor Pressure. Heat of Vap. The Entropy Values from Termal and Molecular Data, J. Am. Chem. Soc., 1938, 60, 1389. [all data]

Travers and Usher, 1906
Travers, M.W.; Usher, F.L., The behavior of certain substance at the critical point, Z. Phys. Chem., Stoechiom. Verwandtschaftsl., 1906, 57, 365-81. [all data]

Giauque and Stephenson, 1938, 2
Giauque, W.F.; Stephenson, C.C., Sulfur Dioxide. The Heat Capacity of Solid and Liquid. Vapor Pressure. Heat of Vaporization. The Entropy Values from Thermal and Molecular Data, J. Am. Chem. Soc., 1938, 60, 6, 1389-1394, https://doi.org/10.1021/ja01273a034 . [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Caldwell and Kebarle, 1985
Caldwell, G.; Kebarle, P., The hydrogen bond energies of the bihalide ions XHX- and YHX-, Can. J. Chem., 1985, 63, 1399. [all data]

McMahon, Heinis, et al., 1988
McMahon, T.; Heinis, T.; Nicol, G.; Hovey, J.K.; Kebarle, P., Methyl Cation Affinities, J. Am. Chem. Soc., 1988, 110, 23, 7591, https://doi.org/10.1021/ja00231a002 . [all data]

Foster, Williamson, et al., 1974
Foster, M.S.; Williamson, A.D.; Beauchamp, J.L., Photoionization mass spectrometry of trans-azomethane, Int. J. Mass Spectrom. Ion Phys., 1974, 15, 429. [all data]

Larson, Szulejko, et al., 1988
Larson, J.W.; Szulejko, J.E.; McMahon, T.B., Gas Phase Lewis Acid-Base Interactions. An Experimental Determination of Cyanide Binding Energies From Ion Cyclotron Resonance and High-Pressure Mass Spectrometric Equilibrium Measurements., J. Am. Chem. Soc., 1988, 110, 23, 7604, https://doi.org/10.1021/ja00231a004 . [all data]

Keesee, Lee, et al., 1980
Keesee, R.G.; Lee, N.; Castleman, A.W., Jr., Properties of clusters in the gas phase: V. Complexes of neutral molecules onto negative ions, J. Chem. Phys., 1980, 73, 2195. [all data]

Fehsenfeld and Ferguson, 1974
Fehsenfeld, F.C.; Ferguson, E.E., Laboratory studies of negative ion reactions with atmospheric trace constituents, J. Chem. Phys., 1974, 61, 3181. [all data]

Grover, Walters, et al., 1985
Grover, J.R.; Walters, E.A.; Newman, J.K.; White, M.G., Measurement of the Dissociation Energies of Gas - Phase Neutral Dimers by a Photoionization Technique: Values for trans - 2 - Butene/Sulfur Dioxide , (trans - 2 - Butene)2, and Benzene/Sulfur Dioxide, J. Am. Chem. Soc., 1985, 107, 25, 7329, https://doi.org/10.1021/ja00311a020 . [all data]

Upschulte, Schelling, et al., 1984
Upschulte, B.L.; Schelling, F.J.; Keesee, R.G.; Castleman, A.W., Thermochemical Properties of Gas Phase Mixed Clusters: Water and Sulfur Dioxide with Na+ and Cl-, Chem. Phys. Lett., 1984, 111, 4-5, 389, https://doi.org/10.1016/0009-2614(84)85526-8 . [all data]

Larson and McMahon, 1985
Larson, J.W.; McMahon, T.B., Fluoride and chloride affinities of the main group oxides, fluorides, oxofluorides, and alkyls. Quantitative scales of lewis acidities from ICR halide exchange equilibria, J. Am. Chem. Soc., 1985, 107, 766. [all data]

Bohringer, Fahey, et al., 1984
Bohringer, H.; Fahey, D.W.; Fehsenfeld, F.C.; Ferguson, E.E., Bond energies of the molecules H2O, SO2, H2O2, and HCl to various atmospheric negative ions, J. Chem. Phys., 1984, 81, 2805. [all data]

Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B., Gas phase negative ion chemistry of alkylchloroformates, Can. J. Chem., 1984, 62, 675. [all data]

French, Ikuta, et al., 1982
French, M.A.; Ikuta, S.; Kebarle, P., Hydrogen bonding of O-H and C-H hydrogen donors to Cl-. Results from mass spectrometric measurement of the ion-molecule equilibria RH + Cl- = RHCl-, Can. J. Chem., 1982, 60, 1907. [all data]

Keesee and Castleman, 1980
Keesee, R.G.; Castleman, A.W., Jr., Gas phase studies of hydration complexes of Cl- and I- and comparison to electrostatic calculations in the gas phase, Chem. Phys. Lett., 1980, 74, 139. [all data]

Banic and Iribarne, 1985
Banic, C.M.; Iribarne, J.V., Equilibrium Constants for Clustering of Neutral Molecules about Gaseous Ions, J. Chem. Phys., 1985, 83, 12, 6432, https://doi.org/10.1063/1.449543 . [all data]

McKnight and Sawina, 1972
McKnight, L.G.; Sawina, J.M., Drift Velocities and Interactions of Cs+ Ions with Atmospheric Gases, J. Chem. Phys., 1972, 57, 12, 5156, https://doi.org/10.1063/1.1678205 . [all data]

Lobring, Check, et al., 2003
Lobring, K.C.; Check, C.E.; Sunderlin, L.S., The fluoride affinity of SO2, Int. J. Mass Spectrom., 2003, 222, 1-3, 221-227, https://doi.org/10.1016/S1387-3806(02)00950-8 . [all data]

Squires, 1992
Squires, R.R., Gas Phase Thermochemical Properties of the Bicarbonate and Bisulfate Ions, Int. J. Mass Spectrom. Ion Proc., 1992, 117, 565, https://doi.org/10.1016/0168-1176(92)80114-G . [all data]

Arshadi, Yamdagni, et al., 1970
Arshadi, M.; Yamdagni, R.; Kebarle, P., Hydration of Halide Negative Ions in the Gas Phase. II. Comparison of Hydration Energies for the Alkali Positive and Halide Negative Ions, J. Phys. Chem., 1970, 74, 7, 1475, https://doi.org/10.1021/j100702a014 . [all data]

Larson and McMahon, 1983
Larson, J.W.; McMahon, T.B., Strong hydrogen bonding in gas-phase anions. An ion cyclotron resonance determination of fluoride binding energetics to bronsted acids from gas-phase fluoride exchange equilibria measurements, J. Am. Chem. Soc., 1983, 105, 2944. [all data]

Wenthold and Squires, 1995
Wenthold, P.G.; Squires, R.R., Bond dissociation energies of F2(-) and HF2(-). A gas-phase experimental and G2 theoretical study, J. Phys. Chem., 1995, 99, 7, 2002, https://doi.org/10.1021/j100007a034 . [all data]

Robbiani and Franklin, 1979
Robbiani, R.; Franklin, J.L., Negative ion-molecule reaction in sulfuryl halides, J. Am. Chem. Soc., 1979, 101, 3709. [all data]

Sheldon, Currie, et al., 1985
Sheldon, J.C.; Currie, G.J.; Lahnstein, J.; Hayes, R.N.; Bowie, J.H., Gas Phase Ion Chemistry of Ambident Nucleophiles. Reactions of Alkoxide and Thiomethoxide Negative Ions with Hydrogen Free Molecules., Nouv. J. Chem., 1985, 9, 205. [all data]

Hierl and Paulson, 1984
Hierl, P.M.; Paulson, J.F., Translational energy dependence of cross sections for reactions of OH- (H2O)n with CO2 and SO2, J. Chem. Phys., 1984, 80, 4890. [all data]

Szulejko and McMahon, 1992
Szulejko, J.; McMahon, T.B., personal communication, 1992. [all data]

McMahon and Kebarle, 1986
McMahon, T.B.; Kebarle, P., Strong hydrogen bonding in gas-phase ions: A high pressure mass spectrometric study of formation and energetics of methyl fluoride proton bound dimer, J. Am. Chem. Soc., 1986, 108, 6502. [all data]

Keesee and Castleman, 1986
Keesee, R.G.; Castleman, A.W., Jr., Thermochemical data on Ggs-phase ion-molecule association and clustering reactions, J. Phys. Chem. Ref. Data, 1986, 15, 1011. [all data]

Vanderhoff and Heimerl, 1977
Vanderhoff, J.A.; Heimerl, J.M., The Equilibrium Constant for NO+(NO) ---> NO+(SO2) and the Rate Coefficient of SO2 Clustering to NO+, at 296 K, J. Chem. Phys., 1977, 66, 8, 3838, https://doi.org/10.1063/1.434380 . [all data]

Puckett and Teague, 1971
Puckett, L.J.; Teague, M.W., Ion-Molecule Reactions in NO - NH3 Gas Mixtures, J. Chem. Phys., 1971, 54, 11, 4860, https://doi.org/10.1063/1.1674763 . [all data]

Lee, Keesee, et al., 1980
Lee, N.; Keesee, R.G.; Castleman, A.W., Jr., The properties of clusters in the gas phase. IV. Complexes of H2O and HNOx clustering on NOx-, J. Chem. Phys., 1980, 72, 1089. [all data]

Wlodek, Luczynski, et al., 1983
Wlodek, S.; Luczynski, Z.; Wincel, H., Gas phase complexes of NO2- and NO3- with SO2, Int. J. Mass Spectrom. Ion Processes, 1983, 49, 301. [all data]

Perry, Rowe, et al., 1980
Perry, R.A.; Rowe, B.R.; Viggiano, A.A.; Albritton, D.L.; Ferguson, E.E.; Fehsenfeld, F.C., Laboratory Measurements of Stratospheric Sodium Ion Measurements, Geophys. Res. Lett., 1980, 7, 9, 693, https://doi.org/10.1029/GL007i009p00693 . [all data]

Castleman, Peterson, et al., 1983
Castleman, A.W.; Peterson, K.I.; Upschulte, B.L.; Schelling, F.J., Energetics and Structure of Na+ Cluster Ions, Int. J. Mass Spectrom. Ion Phys., 1983, 47, 203, https://doi.org/10.1016/0020-7381(83)87171-X . [all data]

Hiller and Vestal, 1980
Hiller, J.F.; Vestal, M.L., Tandem quadrupole study of laser photodissociation of CO3-, J. Chem. Phys., 1980, 72, 4713. [all data]

Erickson and Ng, 1981
Erickson, J.; Ng, C.Y., Molecular Beam Photoionization Study of SO2 and (SO2)2, J. Chem. Phys., 1981, 75, 4, 1650, https://doi.org/10.1063/1.442242 . [all data]

Adams and Bohme, 1970
Adams, N.G.; Bohme, D., Flowing Afterglow Studies of Formation and Reactions of Cluster Ions of O2+, O2-, and O-, J. Chem. Phys., 1970, 52, 6, 3133, https://doi.org/10.1063/1.1673449 . [all data]

Conway and Janik, 1970
Conway, D.C.; Janik, G.S., Determination of the Bond Energies for the Series O2 - O2+ through O2 - O10+, J. Chem. Phys., 1970, 53, 5, 1859, https://doi.org/10.1063/1.1674262 . [all data]

Vacher, Leduc, et al., 1994
Vacher, J.R.; Leduc, E.; Fitaire, M., Stabilities of Anionic Mixed Clusters of Sulfur Dioxide and Water, Int. J. Mass Spectrom. Ion Proc., 1994, 135, 2-3, 139, https://doi.org/10.1016/0168-1176(94)03985-2 . [all data]

Dresch, Kramer, et al., 1991
Dresch, T.; Kramer, H.; Thurner, Y.; Weber, R., Photoelectrons from Negative Dimers and Clusters of Sulfur Dioxide, Chem. Phys. Lett., 1991, 177, 4-5, 383, https://doi.org/10.1016/0009-2614(91)85070-D . [all data]

Snodgrass, Coe, et al., 1988
Snodgrass, J.T.; Coe, J.V.; Friedhoff, C.B.; McHugh, K.M.; Bowen, K.H., On the Photodissociation of (SO2)2-, J. Chem. Phys., 1988, 88, 12, 8014, https://doi.org/10.1063/1.454261 . [all data]

Vacher, Jorda, et al., 1992
Vacher, J.R.; Jorda, M.; Leduc, E.; Fitaire, M., A Determination of the Stabilities of Negative Ion Clusters in SO2 and SO2-O2 Mixtures, Int. J. Mass Spectrom. Ion Proc., 1992, 114, 3, 149, https://doi.org/10.1016/0168-1176(92)80033-W . [all data]

Notes

Go To: Top, Phase change data, Ion clustering data, References

Copyright for NIST Standard Reference Data is governed by the Standard Reference Data Act.