helium

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Gas phase thermochemistry data

Go To: Top, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, 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.

Quantity Value Units Method Reference Comment
gas,1 bar30.1513 ± 0.0005cal/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
gas,1 bar30.151cal/mol*KReviewChase, 1998Data last reviewed in March, 1982

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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View table.

Temperature (K) 298. to 6000.
A 4.967981
B 1.159331×10-10
C -3.783261×10-11
D 3.645079×10-12
E 7.639451×10-12
F -1.481201
G 36.16310
H 0.000000
ReferenceChase, 1998
Comment Data last reviewed in March, 1982

Phase change data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, 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 by: Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director

Quantity Value Units Method Reference Comment
Tc5.2KN/AAngus, de Reuck, et al., 1977Uncertainty assigned by TRC = 0.0005 K; in terms of a temp. scale related to the 1958 He-4 scale, T-58 by 1.001 T-58 + 0.001 K
Quantity Value Units Method Reference Comment
Pc2.244atmN/AAngus, de Reuck, et al., 1977Uncertainty assigned by TRC = 0.002 atm
Quantity Value Units Method Reference Comment
ρc17.40mol/lN/AAngus, de Reuck, et al., 1977Uncertainty assigned by TRC = 0.01 mol/l

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:


Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, Henry's Law data, Gas phase ion energetics data, 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 by: 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. 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

Lithium ion (1+) + helium = (Lithium ion (1+) • helium)

By formula: Li+ + He = (Li+ • He)

Quantity Value Units Method Reference Comment
Δr1.71kcal/molIMobGatland, 1984gas phase
Δr1.64kcal/molSCATTERINGGislason, 1984gas phase
Δr1.69kcal/molIMobViehland, 1984gas phase
Δr1.09kcal/molIMobMason and Sharp, 1958gas phase
Δr3.16kcal/molIMobTakebe, 1983gas phase

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
-3.7309.DTColonna-Romano and Keller, 1976gas phase; low E/N

(Nickel ion (1+) • 2helium) + helium = (Nickel ion (1+) • 3helium)

By formula: (Ni+ • 2He) + He = (Ni+ • 3He)

Quantity Value Units Method Reference Comment
Δr1.6 ± 0.2kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 1.34 kcal/mol, ΔrS(100 K) = 12.0 cal/mol*K
Quantity Value Units Method Reference Comment
Δr12.6cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 1.34 kcal/mol, ΔrS(100 K) = 12.0 cal/mol*K

(Cobalt ion (1+) • 2helium) + helium = (Cobalt ion (1+) • 3helium)

By formula: (Co+ • 2He) + He = (Co+ • 3He)

Quantity Value Units Method Reference Comment
Δr1.3 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 1.22 kcal/mol, ΔrS(100 K) = 11.1 cal/mol*K
Quantity Value Units Method Reference Comment
Δr11.6cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 1.22 kcal/mol, ΔrS(100 K) = 11.1 cal/mol*K

(Nickel ion (1+) • helium) + helium = (Nickel ion (1+) • 2helium)

By formula: (Ni+ • He) + He = (Ni+ • 2He)

Quantity Value Units Method Reference Comment
Δr3.7 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 3.42 kcal/mol, ΔrS(100 K) = 19.8 cal/mol*K
Quantity Value Units Method Reference Comment
Δr20.3cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 3.42 kcal/mol, ΔrS(100 K) = 19.8 cal/mol*K

(Cobalt ion (1+) • helium) + helium = (Cobalt ion (1+) • 2helium)

By formula: (Co+ • He) + He = (Co+ • 2He)

Quantity Value Units Method Reference Comment
Δr3.7 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 3.41 kcal/mol, ΔrS(100 K) = 19.1 cal/mol*K
Quantity Value Units Method Reference Comment
Δr19.6cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 3.41 kcal/mol, ΔrS(100 K) = 19.1 cal/mol*K

Chromium ion (1+) + helium = (Chromium ion (1+) • helium)

By formula: Cr+ + He = (Cr+ • He)

Quantity Value Units Method Reference Comment
Δr1.3 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 0.98 kcal/mol, ΔrS(100 K) = 13.3 cal/mol*K
Quantity Value Units Method Reference Comment
Δr14.8cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 0.98 kcal/mol, ΔrS(100 K) = 13.3 cal/mol*K

Nickel ion (1+) + helium = (Nickel ion (1+) • helium)

By formula: Ni+ + He = (Ni+ • He)

Quantity Value Units Method Reference Comment
Δr3.5 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 2.97 kcal/mol, ΔrS(100 K) = 14.7 cal/mol*K
Quantity Value Units Method Reference Comment
Δr17.1cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 2.97 kcal/mol, ΔrS(100 K) = 14.7 cal/mol*K

Cobalt ion (1+) + helium = (Cobalt ion (1+) • helium)

By formula: Co+ + He = (Co+ • He)

Quantity Value Units Method Reference Comment
Δr3.6 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 3.02 kcal/mol, ΔrS(100 K) = 14.7 cal/mol*K
Quantity Value Units Method Reference Comment
Δr17.1cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 3.02 kcal/mol, ΔrS(100 K) = 14.7 cal/mol*K

(He+ • helium) + helium = (He+ • 2helium)

By formula: (He+ • He) + He = (He+ • 2He)

Quantity Value Units Method Reference Comment
Δr4.2kcal/molDTPatterson, 1968gas phase; corrected for ln T term
Quantity Value Units Method Reference Comment
Δr18.4cal/mol*KDTPatterson, 1968gas phase; corrected for ln T term

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
-1.9300.SAMSGusinow, Gerber, et al., 1970gas phase

Sodium ion (1+) + helium = (Sodium ion (1+) • helium)

By formula: Na+ + He = (Na+ • He)

Quantity Value Units Method Reference Comment
Δr1.19kcal/molSCATTERINGGislason, 1984gas phase
Δr0.79kcal/molIMobViehland, 1984gas phase
Δr0.93kcal/molIMobMason and Sharp, 1958gas phase
Δr1.38kcal/molIMobTakebe, 1983gas phase

Potassium ion (1+) + helium = (Potassium ion (1+) • helium)

By formula: K+ + He = (K+ • He)

Quantity Value Units Method Reference Comment
Δr0.58kcal/molSCATTERINGGislason, 1984gas phase
Δr0.53kcal/molIMobViehland, 1984gas phase
Δr0.53kcal/molIMobTakebe, 1983gas phase
Δr0.57kcal/molIMobRobson and Kumar, 1973gas phase

(He+ • 2helium) + helium = (He+ • 3helium)

By formula: (He+ • 2He) + He = (He+ • 3He)

Quantity Value Units Method Reference Comment
Δr3.73 ± 0.15kcal/molPHPMSHiraoka and Mori, 1990gas phase
Quantity Value Units Method Reference Comment
Δr17.7cal/mol*KPHPMSHiraoka and Mori, 1990gas phase

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
0.677.DTHelm, 1976gas phase

(He+ • 3helium) + helium = (He+ • 4helium)

By formula: (He+ • 3He) + He = (He+ • 4He)

Quantity Value Units Method Reference Comment
Δr0.64 ± 0.15kcal/molPHPMSHiraoka and Mori, 1990gas phase
Quantity Value Units Method Reference Comment
Δr12.8cal/mol*KPHPMSHiraoka and Mori, 1990gas phase

(He+ • 4helium) + helium = (He+ • 5helium)

By formula: (He+ • 4He) + He = (He+ • 5He)

Quantity Value Units Method Reference Comment
Δr0.48 ± 0.15kcal/molPHPMSHiraoka and Mori, 1990gas phase
Quantity Value Units Method Reference Comment
Δr10.8cal/mol*KPHPMSHiraoka and Mori, 1990gas phase

Nitrogen cation + helium = (Nitrogen cation • helium)

By formula: N2+ + He = (N2+ • He)

Quantity Value Units Method Reference Comment
Δr0.4kcal/molPDissBieske, Soliva, et al., 1990gas phase; same ΔrH for N2+(B) and (N2+)X; ab initio, Miller, Tennyson, et al., 1988

He+ + helium = (He+ • helium)

By formula: He+ + He = (He+ • He)

Quantity Value Units Method Reference Comment
Δr54.5kcal/molEmSpecDehmer and Pratt, 1982gas phase
Δr58.8kcal/molSCATTERINGMittman and Weise, 1974gas phase

Cesium ion (1+) + helium = (Cesium ion (1+) • helium)

By formula: Cs+ + He = (Cs+ • He)

Quantity Value Units Method Reference Comment
Δr0.36kcal/molSCATTERINGGislason, 1984gas phase
Δr0.32kcal/molIMobMason and Sharp, 1958gas phase

HN2+ + helium = (HN2+ • helium)

By formula: HN2+ + He = (HN2+ • He)

Quantity Value Units Method Reference Comment
Δr1.2kcal/molSCATTERINGMeuwly, Nizkorodov, et al., 1996gas phase

Ne+ + helium = (Ne+ • helium)

By formula: Ne+ + He = (Ne+ • He)

Quantity Value Units Method Reference Comment
Δr16.0kcal/molEmSpecDehmer and Pratt, 1982gas phase

Ar+ + helium = (Ar+ • helium)

By formula: Ar+ + He = (Ar+ • He)

Quantity Value Units Method Reference Comment
Δr0.60kcal/molEmSpecDehmer and Pratt, 1982gas phase

Henry's Law data

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, 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 by: Rolf Sander

Henry's Law constant (water solution)

kH(T) = H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)

H (mol/(kg*bar)) d(ln(kH))/d(1/T) (K) Method Reference Comment
0.0003892.LN/A 
0.00037360.MN/AInterpolation of the original data at T < 300. K. According to missing citation the solubility increases at higher temperatures.

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Quantity Value Units Method Reference Comment
IE (evaluated)24.58741eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)42.50kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity35.49kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
24.58741EVALLide, 1992LL
24.56EIWetzel, Baiocchi, et al., 1987LBLHLM
24.588SKelly, 1987LBLHLM
24.58741SMoore, 1970RDSH
24.59 ± 0.03EIKaneko, 1960RDSH
24.6 ± 0.1PIWeissler, Samson, et al., 1959RDSH

Ion clustering data

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics 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 by: 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

Ar+ + helium = (Ar+ • helium)

By formula: Ar+ + He = (Ar+ • He)

Quantity Value Units Method Reference Comment
Δr0.60kcal/molEmSpecDehmer and Pratt, 1982gas phase

Cobalt ion (1+) + helium = (Cobalt ion (1+) • helium)

By formula: Co+ + He = (Co+ • He)

Quantity Value Units Method Reference Comment
Δr3.6 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 3.02 kcal/mol, ΔrS(100 K) = 14.7 cal/mol*K
Quantity Value Units Method Reference Comment
Δr17.1cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 3.02 kcal/mol, ΔrS(100 K) = 14.7 cal/mol*K

(Cobalt ion (1+) • helium) + helium = (Cobalt ion (1+) • 2helium)

By formula: (Co+ • He) + He = (Co+ • 2He)

Quantity Value Units Method Reference Comment
Δr3.7 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 3.41 kcal/mol, ΔrS(100 K) = 19.1 cal/mol*K
Quantity Value Units Method Reference Comment
Δr19.6cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 3.41 kcal/mol, ΔrS(100 K) = 19.1 cal/mol*K

(Cobalt ion (1+) • 2helium) + helium = (Cobalt ion (1+) • 3helium)

By formula: (Co+ • 2He) + He = (Co+ • 3He)

Quantity Value Units Method Reference Comment
Δr1.3 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 1.22 kcal/mol, ΔrS(100 K) = 11.1 cal/mol*K
Quantity Value Units Method Reference Comment
Δr11.6cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 1.22 kcal/mol, ΔrS(100 K) = 11.1 cal/mol*K

Chromium ion (1+) + helium = (Chromium ion (1+) • helium)

By formula: Cr+ + He = (Cr+ • He)

Quantity Value Units Method Reference Comment
Δr1.3 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 0.98 kcal/mol, ΔrS(100 K) = 13.3 cal/mol*K
Quantity Value Units Method Reference Comment
Δr14.8cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 0.98 kcal/mol, ΔrS(100 K) = 13.3 cal/mol*K

Cesium ion (1+) + helium = (Cesium ion (1+) • helium)

By formula: Cs+ + He = (Cs+ • He)

Quantity Value Units Method Reference Comment
Δr0.36kcal/molSCATTERINGGislason, 1984gas phase
Δr0.32kcal/molIMobMason and Sharp, 1958gas phase

HN2+ + helium = (HN2+ • helium)

By formula: HN2+ + He = (HN2+ • He)

Quantity Value Units Method Reference Comment
Δr1.2kcal/molSCATTERINGMeuwly, Nizkorodov, et al., 1996gas phase

He+ + helium = (He+ • helium)

By formula: He+ + He = (He+ • He)

Quantity Value Units Method Reference Comment
Δr54.5kcal/molEmSpecDehmer and Pratt, 1982gas phase
Δr58.8kcal/molSCATTERINGMittman and Weise, 1974gas phase

(He+ • helium) + helium = (He+ • 2helium)

By formula: (He+ • He) + He = (He+ • 2He)

Quantity Value Units Method Reference Comment
Δr4.2kcal/molDTPatterson, 1968gas phase; corrected for ln T term
Quantity Value Units Method Reference Comment
Δr18.4cal/mol*KDTPatterson, 1968gas phase; corrected for ln T term

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
-1.9300.SAMSGusinow, Gerber, et al., 1970gas phase

(He+ • 2helium) + helium = (He+ • 3helium)

By formula: (He+ • 2He) + He = (He+ • 3He)

Quantity Value Units Method Reference Comment
Δr3.73 ± 0.15kcal/molPHPMSHiraoka and Mori, 1990gas phase
Quantity Value Units Method Reference Comment
Δr17.7cal/mol*KPHPMSHiraoka and Mori, 1990gas phase

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
0.677.DTHelm, 1976gas phase

(He+ • 3helium) + helium = (He+ • 4helium)

By formula: (He+ • 3He) + He = (He+ • 4He)

Quantity Value Units Method Reference Comment
Δr0.64 ± 0.15kcal/molPHPMSHiraoka and Mori, 1990gas phase
Quantity Value Units Method Reference Comment
Δr12.8cal/mol*KPHPMSHiraoka and Mori, 1990gas phase

(He+ • 4helium) + helium = (He+ • 5helium)

By formula: (He+ • 4He) + He = (He+ • 5He)

Quantity Value Units Method Reference Comment
Δr0.48 ± 0.15kcal/molPHPMSHiraoka and Mori, 1990gas phase
Quantity Value Units Method Reference Comment
Δr10.8cal/mol*KPHPMSHiraoka and Mori, 1990gas phase

Potassium ion (1+) + helium = (Potassium ion (1+) • helium)

By formula: K+ + He = (K+ • He)

Quantity Value Units Method Reference Comment
Δr0.58kcal/molSCATTERINGGislason, 1984gas phase
Δr0.53kcal/molIMobViehland, 1984gas phase
Δr0.53kcal/molIMobTakebe, 1983gas phase
Δr0.57kcal/molIMobRobson and Kumar, 1973gas phase

Lithium ion (1+) + helium = (Lithium ion (1+) • helium)

By formula: Li+ + He = (Li+ • He)

Quantity Value Units Method Reference Comment
Δr1.71kcal/molIMobGatland, 1984gas phase
Δr1.64kcal/molSCATTERINGGislason, 1984gas phase
Δr1.69kcal/molIMobViehland, 1984gas phase
Δr1.09kcal/molIMobMason and Sharp, 1958gas phase
Δr3.16kcal/molIMobTakebe, 1983gas phase

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
-3.7309.DTColonna-Romano and Keller, 1976gas phase; low E/N

Nitrogen cation + helium = (Nitrogen cation • helium)

By formula: N2+ + He = (N2+ • He)

Quantity Value Units Method Reference Comment
Δr0.4kcal/molPDissBieske, Soliva, et al., 1990gas phase; same ΔrH for N2+(B) and (N2+)X; ab initio, Miller, Tennyson, et al., 1988

Sodium ion (1+) + helium = (Sodium ion (1+) • helium)

By formula: Na+ + He = (Na+ • He)

Quantity Value Units Method Reference Comment
Δr1.19kcal/molSCATTERINGGislason, 1984gas phase
Δr0.79kcal/molIMobViehland, 1984gas phase
Δr0.93kcal/molIMobMason and Sharp, 1958gas phase
Δr1.38kcal/molIMobTakebe, 1983gas phase

Ne+ + helium = (Ne+ • helium)

By formula: Ne+ + He = (Ne+ • He)

Quantity Value Units Method Reference Comment
Δr16.0kcal/molEmSpecDehmer and Pratt, 1982gas phase

Nickel ion (1+) + helium = (Nickel ion (1+) • helium)

By formula: Ni+ + He = (Ni+ • He)

Quantity Value Units Method Reference Comment
Δr3.5 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 2.97 kcal/mol, ΔrS(100 K) = 14.7 cal/mol*K
Quantity Value Units Method Reference Comment
Δr17.1cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 2.97 kcal/mol, ΔrS(100 K) = 14.7 cal/mol*K

(Nickel ion (1+) • helium) + helium = (Nickel ion (1+) • 2helium)

By formula: (Ni+ • He) + He = (Ni+ • 2He)

Quantity Value Units Method Reference Comment
Δr3.7 ± 0.1kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 3.42 kcal/mol, ΔrS(100 K) = 19.8 cal/mol*K
Quantity Value Units Method Reference Comment
Δr20.3cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 3.42 kcal/mol, ΔrS(100 K) = 19.8 cal/mol*K

(Nickel ion (1+) • 2helium) + helium = (Nickel ion (1+) • 3helium)

By formula: (Ni+ • 2He) + He = (Ni+ • 3He)

Quantity Value Units Method Reference Comment
Δr1.6 ± 0.2kcal/molSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 1.34 kcal/mol, ΔrS(100 K) = 12.0 cal/mol*K
Quantity Value Units Method Reference Comment
Δr12.6cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; ΔrH(0 K) = 1.34 kcal/mol, ΔrS(100 K) = 12.0 cal/mol*K

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics 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.

Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Angus, de Reuck, et al., 1977
Angus, S.; de Reuck, K.M.; McCarty, R.D., International Thermodynamic Tables of the Fluid State - 4 Helium, Pergamon, New York, 1977. [all data]

Gatland, 1984
Gatland, I.R., Swarms of Ions and Electrons in Gases, W. Lindinger, T. D. Mark and F. Howorka, eds. (Springer, New York, 1984, 1984, 44. [all data]

Gislason, 1984
Gislason, E.A., Quoted in I. R. Gatland in Swarms of Ions and Electrons in Gases, W. Lindinger, T. D. Mark and F. Howorka, eds. (Springer, New York, 1984, 1984, 44. [all data]

Viehland, 1984
Viehland, L.A., Interaction Potentials for Li+ - Rare - Gas Systems, Chem. Phys., 1984, 78, 2, 279, https://doi.org/10.1016/0301-0104(83)85114-3 . [all data]

Mason and Sharp, 1958
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Notes

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