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Argon

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Gas phase thermochemistry data

Go To: Top, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), 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 bar37.0091 ± 0.0007cal/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
gas,1 bar37.008cal/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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Temperature (K) 298. - 6000.
A 4.967974
B 6.754087×10-8
C -3.499499×10-8
D 2.610254×10-9
E -8.750885×10-9
F -1.481203
G 43.02079
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, Mass spectrum (electron ionization), 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

Quantity Value Units Method Reference Comment
Tboil87.5KN/AStreng, 1971Uncertainty assigned by TRC = 0.3 K; TRC
Tboil87.28KN/AGosman, McCarty, et al., 1969Uncertainty assigned by TRC = 0.02 K; TRC
Quantity Value Units Method Reference Comment
Tfus83.8KN/AVan't Zelfde, Omar, et al., 1968Uncertainty assigned by TRC = 0.3 K; TRC
Quantity Value Units Method Reference Comment
Ttriple87.78KN/AAngus, Armstrong, et al., 1972Uncertainty assigned by TRC = 0.05 K; TRC
Ttriple83.8KN/AGosman, McCarty, et al., 1969Uncertainty assigned by TRC = 0.05 K; TRC
Ttriple83.8KN/AZiegler, Mullins, et al., 1962Uncertainty assigned by TRC = 0.05 K; TRC
Ttriple83.78KN/AClark, Din, et al., 1951Uncertainty assigned by TRC = 0.04 K; TRC
Ttriple83.78KN/AClusius and Weigand, 1940Uncertainty assigned by TRC = 0.2 K; See property X for dP/dT at triple point; TRC
Quantity Value Units Method Reference Comment
Ptriple0.680atmN/AGosman, McCarty, et al., 1969Uncertainty assigned by TRC = 0.0001 atm; TRC
Ptriple0.680atmN/AZiegler, Mullins, et al., 1962Uncertainty assigned by TRC = 0.0001 atm; TRC
Ptriple0.6785atmN/AClark, Din, et al., 1951Uncertainty assigned by TRC = 0.0007 atm; TRC
Quantity Value Units Method Reference Comment
Tc150.86KN/AAngus, Armstrong, et al., 1972Uncertainty assigned by TRC = 0.1 K; TRC
Tc150.86KN/AGosman, McCarty, et al., 1969Uncertainty assigned by TRC = 0.1 K; TRC
Tc150.65KN/AMcCain and Ziegler, 1967Uncertainty assigned by TRC = 0.03 K; TRC
Quantity Value Units Method Reference Comment
Pc4.8339atmN/AAngus, Armstrong, et al., 1972Uncertainty assigned by TRC = 0.002 atm; TRC
Pc48.3400atmN/AGosman, McCarty, et al., 1969Uncertainty assigned by TRC = 0.09998 atm; TRC
Pc47.9200atmN/AMcCain and Ziegler, 1967Uncertainty assigned by TRC = 0.0700 atm; TRC
Quantity Value Units Method Reference Comment
rhoc13.41mol/lN/AAngus, Armstrong, et al., 1972Uncertainty assigned by TRC = 0.005 mol/l; TRC
rhoc8.4029mol/lN/AGosman, McCarty, et al., 1969Uncertainty assigned by TRC = 0.008 mol/l; TRC

Antoine Equation Parameters

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

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Temperature (K) A B C Reference Comment
114.40 - 150.314.46332481.01222.156McCain and Ziegler, 1967Coefficents calculated by NIST from author's data.
83.78 - 150.723.28984215.24-22.233Drii and Rabinovich, 1966Coefficents calculated by NIST from author's data.
129.33 - 147.404.96600658.98249.819van Itterbeek, Verbeke, et al., 1963Coefficents calculated by NIST from author's data.
90.94 - 101.483.72908302.683-6.083Clark, Din, et al., 1951, 2Coefficents 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:


Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), 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:
RCD - Robert C. Dunbar
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess

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

Reactions 1 to 50

Lithium ion (1+) + Argon = (Lithium ion (1+) bullet Argon)

By formula: Li+ + Ar = (Li+ bullet Ar)

Quantity Value Units Method Reference Comment
Deltar7. ± 1.kcal/molAVGN/AAverage of 4 out of 6 values; Individual data points
Quantity Value Units Method Reference Comment
Deltar7.cal/mol*KDTMcKnight and Sawina, 1973gas phase; «DELTA»rS approximate; M

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
1.4294.IMobCassidy and Elford, 1985gas phase; M
1.9319.DTKeller, Beyer, et al., 1973gas phase; LOW E/N; M
2.6215.DTMcKnight and Sawina, 1973gas phase; «DELTA»rS approximate; M

Ar+ + Argon = (Ar+ bullet Argon)

By formula: Ar+ + Ar = (Ar+ bullet Ar)

Quantity Value Units Method Reference Comment
Deltar20. ± 20.kcal/molAVGN/AAverage of 5 out of 7 values; Individual data points
Quantity Value Units Method Reference Comment
Deltar12.8cal/mol*KPHPMSTeng and Conway, 1973gas phase; switching reaction(N2+)Ar; Turner and Conway, 1979, Liu and Conway, 1975; M

Potassium ion (1+) + Argon = (Potassium ion (1+) bullet Argon)

By formula: K+ + Ar = (K+ bullet Ar)

Quantity Value Units Method Reference Comment
Deltar2.8 ± 0.7kcal/molAVGN/AAverage of 9 values; Individual data points

Nitrogen cation + Argon = (Nitrogen cation bullet Argon)

By formula: N2+ + Ar = (N2+ bullet Ar)

Quantity Value Units Method Reference Comment
Deltar26.8kcal/molPD/KERDKim and Bowers, 1990gas phase; switching reaction(N2+)N2; Hiraoka and Nakajima, 1988; M
Deltar25.4kcal/molPHPMSTeng and Conway, 1973gas phase; switching reaction(N2+)N2; M
Quantity Value Units Method Reference Comment
Deltar19.5cal/mol*KPD/KERDKim and Bowers, 1990gas phase; switching reaction(N2+)N2; Hiraoka and Nakajima, 1988; M
Deltar13.7cal/mol*KPHPMSTeng and Conway, 1973gas phase; switching reaction(N2+)N2; M

Cesium ion (1+) + Argon = (Cesium ion (1+) bullet Argon)

By formula: Cs+ + Ar = (Cs+ bullet Ar)

Quantity Value Units Method Reference Comment
Deltar1.95kcal/molIMobGatland, 1984gas phase; M
Deltar1.46kcal/molSCATTERINGGislason, 1984gas phase; M
Deltar1.96kcal/molIMobViehland, 1984gas phase; M
Deltar2.28kcal/molIMobTakebe, 1983gas phase; M
Deltar2.3kcal/molIMobTakebe, 1983gas phase; values from this reference are consistently too high; M

Chromium ion (1+) + Argon = (Chromium ion (1+) bullet Argon)

By formula: Cr+ + Ar = (Cr+ bullet Ar)

Quantity Value Units Method Reference Comment
Deltar6.9 ± 0.4kcal/molSIDTKemper, Hsu, et al., 1991gas phase; «DELTA»rH(0 K) = 6.55 kcal/mol, «DELTA»rS(100 K) = 14.4 cal/mol*K; M
Quantity Value Units Method Reference Comment
Deltar15.8cal/mol*KSIDTKemper, Hsu, et al., 1991gas phase; «DELTA»rH(0 K) = 6.55 kcal/mol, «DELTA»rS(100 K) = 14.4 cal/mol*K; M

Sodium ion (1+) + Argon = (Sodium ion (1+) bullet Argon)

By formula: Na+ + Ar = (Na+ bullet Ar)

Quantity Value Units Method Reference Comment
Deltar3.7 ± 2.1kcal/molCIDTArmentrout and Rodgers, 2000RCD
Deltar3.70kcal/molSCATTERINGGislason, 1984gas phase; M
Deltar4.39kcal/molIMobViehland, 1984gas phase; M
Deltar4.4kcal/molDTMcKnight and Sawina, 1973gas phase; M
Deltar4.87kcal/molIMobTakebe, 1983gas phase; M

H3+ + Argon = (H3+ bullet Argon)

By formula: H3+ + Ar = (H3+ bullet Ar)

Quantity Value Units Method Reference Comment
Deltar6.7 ± 0.2kcal/molPHPMSHiraoka and Mori, 1989gas phase; M
Deltar7.5 ± 0.8kcal/molSIFTBedford and Smith, 1990gas phase; switching reaction(H3+)H2, Hiraoka and Mori, 1989; M
Quantity Value Units Method Reference Comment
Deltar13.4cal/mol*KPHPMSHiraoka and Mori, 1989gas phase; M

Xe+ + Argon = (Xe+ bullet Argon)

By formula: Xe+ + Ar = (Xe+ bullet Ar)

Quantity Value Units Method Reference Comment
Deltar4.1kcal/molPIDehmer and Pratt, 1982gas phase; M
Deltar6.0kcal/molSIFTJones, Lister, et al., 1980gas phase; M
Deltar3.2kcal/molPINg, Tiedemann, et al., 1977gas phase; M
Quantity Value Units Method Reference Comment
Deltar19.4cal/mol*KSIFTJones, Lister, et al., 1980gas phase; M

(Ar+ bullet 2Argon) + Argon = (Ar+ bullet 3Argon)

By formula: (Ar+ bullet 2Ar) + Ar = (Ar+ bullet 3Ar)

Quantity Value Units Method Reference Comment
Deltar4.9 ± 0.3kcal/molPHPMSHiraoka and Mori, 1989, 2gas phase; M
Quantity Value Units Method Reference Comment
Deltar17.3cal/mol*KPHPMSHiraoka and Mori, 1989, 2gas phase; M

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
2.077.PHPMSTeng and Conway, 1973gas phase; M

(Nitrogen cation bullet 7Argon) + Argon = (Nitrogen cation bullet 8Argon)

By formula: (N2+ bullet 7Ar) + Ar = (N2+ bullet 8Ar)

Quantity Value Units Method Reference Comment
Deltar1.53kcal/molPHPMSHiraoka, Mori, et al., 1992gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Deltar17.cal/mol*KN/AHiraoka, Mori, et al., 1992gas phase; Entropy change calculated or estimated; M

(Nitrogen cation bullet 8Argon) + Argon = (Nitrogen cation bullet 9Argon)

By formula: (N2+ bullet 8Ar) + Ar = (N2+ bullet 9Ar)

Quantity Value Units Method Reference Comment
Deltar1.52kcal/molPHPMSHiraoka, Mori, et al., 1992gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Deltar17.cal/mol*KN/AHiraoka, Mori, et al., 1992gas phase; Entropy change calculated or estimated; M

Fluorine anion + Argon = ArF-

By formula: F- + Ar = ArF-

Quantity Value Units Method Reference Comment
Deltar2.00kcal/molTDAsWada, Kikkawa, et al., 2007gas phase; Entropy estimated; B
Quantity Value Units Method Reference Comment
Deltar-3.96kcal/molTDAsWada, Kikkawa, et al., 2007gas phase; Entropy estimated; B

Rubidium ion (1+) + Argon = (Rubidium ion (1+) bullet Argon)

By formula: Rb+ + Ar = (Rb+ bullet Ar)

Quantity Value Units Method Reference Comment
Deltar2.03kcal/molIMobGatland, 1984gas phase; M
Deltar1.98kcal/molIMobViehland, 1984gas phase; M
Deltar2.84kcal/molIMobTakebe, 1983gas phase; M

(O- bullet 10Argon) + Argon = (O- bullet 11Argon)

By formula: (O- bullet 10Ar) + Ar = (O- bullet 11Ar)

Quantity Value Units Method Reference Comment
Deltar0.4 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 11Argon) + Argon = (O- bullet 12Argon)

By formula: (O- bullet 11Ar) + Ar = (O- bullet 12Ar)

Quantity Value Units Method Reference Comment
Deltar0.8 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 12Argon) + Argon = (O- bullet 13Argon)

By formula: (O- bullet 12Ar) + Ar = (O- bullet 13Ar)

Quantity Value Units Method Reference Comment
Deltar0.2 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 13Argon) + Argon = (O- bullet 14Argon)

By formula: (O- bullet 13Ar) + Ar = (O- bullet 14Ar)

Quantity Value Units Method Reference Comment
Deltar0.2 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 14Argon) + Argon = (O- bullet 15Argon)

By formula: (O- bullet 14Ar) + Ar = (O- bullet 15Ar)

Quantity Value Units Method Reference Comment
Deltar0.4 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 15Argon) + Argon = (O- bullet 16Argon)

By formula: (O- bullet 15Ar) + Ar = (O- bullet 16Ar)

Quantity Value Units Method Reference Comment
Deltar0.1 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 16Argon) + Argon = (O- bullet 17Argon)

By formula: (O- bullet 16Ar) + Ar = (O- bullet 17Ar)

Quantity Value Units Method Reference Comment
Deltar0.1 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 17Argon) + Argon = (O- bullet 18Argon)

By formula: (O- bullet 17Ar) + Ar = (O- bullet 18Ar)

Quantity Value Units Method Reference Comment
Deltar0.2 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 18Argon) + Argon = (O- bullet 19Argon)

By formula: (O- bullet 18Ar) + Ar = (O- bullet 19Ar)

Quantity Value Units Method Reference Comment
Deltar0.1 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 19Argon) + Argon = (O- bullet 20Argon)

By formula: (O- bullet 19Ar) + Ar = (O- bullet 20Ar)

Quantity Value Units Method Reference Comment
Deltar0.1 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 20Argon) + Argon = (O- bullet 21Argon)

By formula: (O- bullet 20Ar) + Ar = (O- bullet 21Ar)

Quantity Value Units Method Reference Comment
Deltar0.1 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 21Argon) + Argon = (O- bullet 22Argon)

By formula: (O- bullet 21Ar) + Ar = (O- bullet 22Ar)

Quantity Value Units Method Reference Comment
Deltar0.1 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 22Argon) + Argon = (O- bullet 23Argon)

By formula: (O- bullet 22Ar) + Ar = (O- bullet 23Ar)

Quantity Value Units Method Reference Comment
Deltar0.1 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 23Argon) + Argon = (O- bullet 24Argon)

By formula: (O- bullet 23Ar) + Ar = (O- bullet 24Ar)

Quantity Value Units Method Reference Comment
Deltar0.1 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 24Argon) + Argon = (O- bullet 25Argon)

By formula: (O- bullet 24Ar) + Ar = (O- bullet 25Ar)

Quantity Value Units Method Reference Comment
Deltar0.2 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 25Argon) + Argon = (O- bullet 26Argon)

By formula: (O- bullet 25Ar) + Ar = (O- bullet 26Ar)

Quantity Value Units Method Reference Comment
Deltar0.2 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 9Argon) + Argon = (O- bullet 10Argon)

By formula: (O- bullet 9Ar) + Ar = (O- bullet 10Ar)

Quantity Value Units Method Reference Comment
Deltar0.7 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 2Argon) + Argon = (O- bullet 3Argon)

By formula: (O- bullet 2Ar) + Ar = (O- bullet 3Ar)

Quantity Value Units Method Reference Comment
Deltar1.6 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 3Argon) + Argon = (O- bullet 4Argon)

By formula: (O- bullet 3Ar) + Ar = (O- bullet 4Ar)

Quantity Value Units Method Reference Comment
Deltar1.4 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 4Argon) + Argon = (O- bullet 5Argon)

By formula: (O- bullet 4Ar) + Ar = (O- bullet 5Ar)

Quantity Value Units Method Reference Comment
Deltar1.2 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 5Argon) + Argon = (O- bullet 6Argon)

By formula: (O- bullet 5Ar) + Ar = (O- bullet 6Ar)

Quantity Value Units Method Reference Comment
Deltar1.2 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 6Argon) + Argon = (O- bullet 7Argon)

By formula: (O- bullet 6Ar) + Ar = (O- bullet 7Ar)

Quantity Value Units Method Reference Comment
Deltar1.0 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 7Argon) + Argon = (O- bullet 8Argon)

By formula: (O- bullet 7Ar) + Ar = (O- bullet 8Ar)

Quantity Value Units Method Reference Comment
Deltar0.9 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet 8Argon) + Argon = (O- bullet 9Argon)

By formula: (O- bullet 8Ar) + Ar = (O- bullet 9Ar)

Quantity Value Units Method Reference Comment
Deltar0.9 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(O- bullet Argon) + Argon = (O- bullet 2Argon)

By formula: (O- bullet Ar) + Ar = (O- bullet 2Ar)

Quantity Value Units Method Reference Comment
Deltar2.0 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(Ar+ bullet Argon) + Argon = (Ar+ bullet 2Argon)

By formula: (Ar+ bullet Ar) + Ar = (Ar+ bullet 2Ar)

Quantity Value Units Method Reference Comment
Deltar5.06 ± 0.08kcal/molPHPMSTurner and Conway, 1979gas phase; M
Quantity Value Units Method Reference Comment
Deltar20.3cal/mol*KPHPMSTurner and Conway, 1979gas phase; M

(Nitrogen cation bullet Argon) + Argon = (Nitrogen cation bullet 2Argon)

By formula: (N2+ bullet Ar) + Ar = (N2+ bullet 2Ar)

Quantity Value Units Method Reference Comment
Deltar3.8kcal/molPHPMSHiraoka, Mori, et al., 1992gas phase; «DELTA»rH>; M
Quantity Value Units Method Reference Comment
Deltar17.cal/mol*KPHPMSHiraoka, Mori, et al., 1992gas phase; «DELTA»rH>; M

O- + Argon = (O- bullet Argon)

By formula: O- + Ar = (O- bullet Ar)

Quantity Value Units Method Reference Comment
Deltar2.2 ± 2.0kcal/molN/AArnold, Hendricks, et al., 1995gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

(Ar+ bullet 10Argon) + Argon = (Ar+ bullet 11Argon)

By formula: (Ar+ bullet 10Ar) + Ar = (Ar+ bullet 11Ar)

Quantity Value Units Method Reference Comment
Deltar1.6 ± 0.2kcal/molPHPMSHiraoka and Mori, 1989, 2gas phase; M
Quantity Value Units Method Reference Comment
Deltar17.4cal/mol*KPHPMSHiraoka and Mori, 1989, 2gas phase; M

(Ar+ bullet 9Argon) + Argon = (Ar+ bullet 10Argon)

By formula: (Ar+ bullet 9Ar) + Ar = (Ar+ bullet 10Ar)

Quantity Value Units Method Reference Comment
Deltar1.55 ± 0.20kcal/molPHPMSHiraoka and Mori, 1989, 2gas phase; M
Quantity Value Units Method Reference Comment
Deltar17.1cal/mol*KPHPMSHiraoka and Mori, 1989, 2gas phase; M

(D3+ bullet 2Argon) + Argon = (D3+ bullet 3Argon)

By formula: (D3+ bullet 2Ar) + Ar = (D3+ bullet 3Ar)

Quantity Value Units Method Reference Comment
Deltar4.4 ± 0.1kcal/molPHPMSHiraoka and Mori, 1989gas phase; M
Quantity Value Units Method Reference Comment
Deltar18.4cal/mol*KPHPMSHiraoka and Mori, 1989gas phase; M

(D3+ bullet 3Argon) + Argon = (D3+ bullet 4Argon)

By formula: (D3+ bullet 3Ar) + Ar = (D3+ bullet 4Ar)

Quantity Value Units Method Reference Comment
Deltar2.4 ± 0.1kcal/molPHPMSHiraoka and Mori, 1989gas phase; M
Quantity Value Units Method Reference Comment
Deltar16.6cal/mol*KPHPMSHiraoka and Mori, 1989gas phase; M

(D3+ bullet 4Argon) + Argon = (D3+ bullet 5Argon)

By formula: (D3+ bullet 4Ar) + Ar = (D3+ bullet 5Ar)

Quantity Value Units Method Reference Comment
Deltar2.3 ± 0.1kcal/molPHPMSHiraoka and Mori, 1989gas phase; M
Quantity Value Units Method Reference Comment
Deltar17.4cal/mol*KPHPMSHiraoka and Mori, 1989gas phase; M

(D3+ bullet 5Argon) + Argon = (D3+ bullet 6Argon)

By formula: (D3+ bullet 5Ar) + Ar = (D3+ bullet 6Ar)

Quantity Value Units Method Reference Comment
Deltar2.2 ± 0.1kcal/molPHPMSHiraoka and Mori, 1989gas phase; M
Quantity Value Units Method Reference Comment
Deltar19.1cal/mol*KPHPMSHiraoka and Mori, 1989gas phase; M

(D3+ bullet 6Argon) + Argon = (D3+ bullet 7Argon)

By formula: (D3+ bullet 6Ar) + Ar = (D3+ bullet 7Ar)

Quantity Value Units Method Reference Comment
Deltar1.6 ± 0.1kcal/molPHPMSHiraoka and Mori, 1989gas phase; M
Quantity Value Units Method Reference Comment
Deltar25.2cal/mol*KPHPMSHiraoka and Mori, 1989gas phase; M

(Ar+ bullet 3Argon) + Argon = (Ar+ bullet 4Argon)

By formula: (Ar+ bullet 3Ar) + Ar = (Ar+ bullet 4Ar)

Quantity Value Units Method Reference Comment
Deltar1.7 ± 0.2kcal/molPHPMSHiraoka and Mori, 1989, 2gas phase; M
Quantity Value Units Method Reference Comment
Deltar13.9cal/mol*KPHPMSHiraoka and Mori, 1989, 2gas phase; M

Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

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References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), 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
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Angus, S.; Armstrong, B.; Gosman, A.L.; McCarty, R.D.; Hust, J.G.; Vasserman, A.A.; Rabinovich, V.A., International Thermodynamic Tables of the Fluid State - 1 Argon, Butterworths, London, 1972. [all data]

Ziegler, Mullins, et al., 1962
Ziegler, W.T.; Mullins, J.C.; Kirk, B.S., Calculation of the Vapor Pressure and Heats of Vaporization and Sublimation of Liquids and Solids, Especially Below One Atmosphere Pressure. II. Argon, Ga. Inst. Technol., Eng. Exp. Stn., Proj. A-460, Tech. Rep. No. 2, 1962. [all data]

Clark, Din, et al., 1951
Clark, A.M.; Din, F.; Robb, J.; Michels, A.; Wassenaar, T.; Zwietering, Th.N., The Vapor Pressure of Argon, Physica (Amsterdam), 1951, 17, 876. [all data]

Clusius and Weigand, 1940
Clusius, K.; Weigand, K., Melting Curves of the Gases A, Kr, Xe, CH4, CH3D, CD4, C2H4, C2H6, COS, and PH3 to 200 Atmospheres Pressure. The Chane of Volume on Melting, Z. Phys. Chem., Abt. B, 1940, 46, 1-37. [all data]

McCain and Ziegler, 1967
McCain, W.D., Jr.; Ziegler, W.T., The Critical Temperature, Critical Pressure, and Vapor Pressure of Argon, J. Chem. Eng. Data, 1967, 12, 2, 199-202, https://doi.org/10.1021/je60033a012 . [all data]

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Drii, L.I.; Rabinovich, V.A., Dependence of Vapor Pressure of Argon, Zh. Fiz. Khim., 1966, 40, 709-711. [all data]

van Itterbeek, Verbeke, et al., 1963
van Itterbeek, A.; Verbeke, O.; Staes, K., Measurements on the Equation of State of Liquid Argon and Methane Up to 300 kg cm-2 at Low Temperatures, Physica (Amsterdam), 1963, 29, 6, 742-754, https://doi.org/10.1016/S0031-8914(63)80231-1 . [all data]

Clark, Din, et al., 1951, 2
Clark, A.M.; Din, F.; Robb, J.; Michels, A.; Wassenaar, T.; Zwietering, Th., The Vapour Pressure of Argon, Physica (Amsterdam), 1951, 17, 10, 876-884, https://doi.org/10.1016/0031-8914(51)90041-9 . [all data]

McKnight and Sawina, 1973
McKnight, L.G.; Sawina, J.M., Equilibrium Constants and Binding Energies of Alkali Metal Ions with Inert Gases, Bull. Am. Phys. Soc., 1973, 18, 804. [all data]

Cassidy and Elford, 1985
Cassidy, R.A.; Elford, M.T., The Mobility of Li+ Ions in Helium and Argon, Aust. J. Phys., 1985, 38, 4, 587, https://doi.org/10.1071/PH850587 . [all data]

Keller, Beyer, et al., 1973
Keller, C.E.; Beyer, R.A.; Colonna-Romano, L.M., Clustering of Ar to Li+ and a Comparison of Drift - Tube Models, Phys. Rev. A, 1973, 8, 3, 1446, https://doi.org/10.1103/PhysRevA.8.1446 . [all data]

Teng and Conway, 1973
Teng, H.H.; Conway, D.C., Ion - Molecule Equilibria in Mixtures of N2 and Ar, J. Chem. Phys., 1973, 59, 5, 2316, https://doi.org/10.1063/1.1680338 . [all data]

Turner and Conway, 1979
Turner, D.L.; Conway, D.C., Study of the 2Ar + Ar2+ = Ar + Ar3+ Reaction, J. Chem. Phys., 1979, 71, 4, 1899, https://doi.org/10.1063/1.438544 . [all data]

Liu and Conway, 1975
Liu, W.F.; Conway, D.C., Ion - Molecule Reactions in Ar at 296, 195, and 77 K, J. Chem. Phys., 1975, 62, 8, 3070, https://doi.org/10.1063/1.430906 . [all data]

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Kim, H.S.; Bowers, M.T., Energetics, Structure and Photodissociation Dynamics of the Cluster Ar.N2+, J. Chem. Phys., 1990, 93, 2, 1158, https://doi.org/10.1063/1.459179 . [all data]

Hiraoka and Nakajima, 1988
Hiraoka, K.; Nakajima, G., A Determination of the Stabilities of N2+(N2)n and O2+(N2)n with n = 1 - 11 from Measurements of the Gas - Phase Ion Equilibria, J. Chem. Phys., 1988, 88, 12, 7709, https://doi.org/10.1063/1.454285 . [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]

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Takebe, M., The Generalized Mobility Curve for Alkali Ions in Rare Gases: Clustering Reactions and Mobility Curves, J. Chem. Phys., 1983, 78, 12, 7223, https://doi.org/10.1063/1.444763 . [all data]

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Kemper, P.R.; Hsu, M.T.; Bowers, M.T., Transition - Metal Ion - Rare Gas Clusters: Bond Strengths and Molecular Parameters for Co+(He/Ne)n, Ni+(He/Ne)n, and Cr+(He/Ne/Ar), J. Phys. Chem., 1991, 95, 26, 10600, https://doi.org/10.1021/j100179a022 . [all data]

Armentrout and Rodgers, 2000
Armentrout, P.B.; Rodgers, M.T., An Absolute Sodium Cation Affinity Scale: Threshold Collision-Induced Dissociation Experiments and ab Initio Theory, J. Phys. Chem A, 2000, 104, 11, 2238, https://doi.org/10.1021/jp991716n . [all data]

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Hiraoka, K.; Mori, T., Isotope Effect and Nature of Bonding in the Cluster Ions H3+(Ar)n and D3+(Ar)n, J. Chem. Phys., 1989, 91, 8, 4821, https://doi.org/10.1063/1.456720 . [all data]

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Bedford, D.K.; Smith, D., Variable-temperature selected ion flow tube studies of the reactions of Ar+, Ar2+ and ArHn+ (n=1-3) ions with H2, HD and D2 at 300 K and 80 K, Int. J. Mass Spectrom. Ion Proc., 1990, 98, 2, 179, https://doi.org/10.1016/0168-1176(90)85017-V . [all data]

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Dehmer, P.M.; Pratt, S.T., Photoionization of ArKr, ArXe, and KrXe and bond dissociation energies of the rare gas dimer ions, J. Chem. Phys., 1982, 77, 4804. [all data]

Jones, Lister, et al., 1980
Jones, J.D.C.; Lister, D.G.; Twiddy, N.D., Equilibrium Constant for the Reaction Xe+ + 2Ar ---> XeAr+ + Ar in the Temperature Range 150 - 300 K and the Dissociation Energy of XeAr+, Chem. Phys. Lett., 1980, 70, 3, 575, https://doi.org/10.1016/0009-2614(80)80128-X . [all data]

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Hiraoka, K.; Mori, T., Formation and Stabilities of Cluster Ions Arn+, J. Chem. Phys., 1989, 90, 12, 7143, https://doi.org/10.1063/1.456245 . [all data]

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Arnold, S.T.; Hendricks, J.H.; Bowen, K.H., Photoelectron spectroscopy of the solvated anion clusters O-(Ar)(n=1-26,34): Energetics and structure, J. Chem. Phys., 1995, 102, 1, 39, https://doi.org/10.1063/1.469415 . [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), References