Argon
- Formula: Ar
- Molecular weight: 39.948
- IUPAC Standard InChIKey: XKRFYHLGVUSROY-UHFFFAOYSA-N
- CAS Registry Number: 7440-37-1
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Ar; UN 1006; UN 1951; argon atom
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Reaction thermochemistry data: reactions 51 to 100, reactions 101 to 102
- Henry's Law data
- Fluid Properties
- Data at other public NIST sites:
- NIST Atomic Spectra Database - Lines Holdings (on physics web site)
- NIST Atomic Spectra Database - Levels Holdings (on physics web site)
- NIST Atomic Spectra Database - Ground states and ionization energies (on physics web site)
- Computational Chemistry Comparison and Benchmark Database
- Gas Phase Kinetics Database
- X-ray Photoelectron Spectroscopy Database, version 5.0
- X-ray Photoelectron Spectroscopy Database, version 5.0
- X-ray Photoelectron Spectroscopy Database, version 5.0
- X-ray Photoelectron Spectroscopy Database, version 5.0
- X-ray Photoelectron Spectroscopy Database, version 5.0
- X-ray Photoelectron Spectroscopy Database, version 5.0
- X-ray Photoelectron Spectroscopy Database, version 5.0
- X-ray Photoelectron Spectroscopy Database, version 5.0
- Options:
Data at NIST subscription sites:
- NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data)
- NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)
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Gas phase thermochemistry data
Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering 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 |
---|---|---|---|---|---|
S°gas,1 bar | 154.846 ± 0.003 | J/mol*K | Review | Cox, Wagman, et al., 1984 | CODATA Review value |
S°gas,1 bar | 154.84 | J/mol*K | Review | Chase, 1998 | Data 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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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Temperature (K) | 298. to 6000. |
---|---|
A | 20.78600 |
B | 2.825911×10-7 |
C | -1.464191×10-7 |
D | 1.092131×10-8 |
E | -3.661371×10-8 |
F | -6.197350 |
G | 179.9990 |
H | 0.000000 |
Reference | Chase, 1998 |
Comment | Data last reviewed in March, 1982 |
Phase change data
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering 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 |
---|---|---|---|---|---|
Tboil | 87.5 | K | N/A | Streng, 1971 | Uncertainty assigned by TRC = 0.3 K; TRC |
Tboil | 87.28 | K | N/A | Gosman, McCarty, et al., 1969 | Uncertainty assigned by TRC = 0.02 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 83.8 | K | N/A | Van't Zelfde, Omar, et al., 1968 | Uncertainty assigned by TRC = 0.3 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 87.78 | K | N/A | Angus, Armstrong, et al., 1972 | Uncertainty assigned by TRC = 0.05 K; TRC |
Ttriple | 83.8 | K | N/A | Gosman, McCarty, et al., 1969 | Uncertainty assigned by TRC = 0.05 K; TRC |
Ttriple | 83.8 | K | N/A | Ziegler, Mullins, et al., 1962 | Uncertainty assigned by TRC = 0.05 K; TRC |
Ttriple | 83.78 | K | N/A | Clark, Din, et al., 1951 | Uncertainty assigned by TRC = 0.04 K; TRC |
Ttriple | 83.78 | K | N/A | Clusius and Weigand, 1940 | Uncertainty assigned by TRC = 0.2 K; See property X for dP/dT at triple point; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ptriple | 0.689 | bar | N/A | Gosman, McCarty, et al., 1969 | Uncertainty assigned by TRC = 0.0001 bar; TRC |
Ptriple | 0.689 | bar | N/A | Ziegler, Mullins, et al., 1962 | Uncertainty assigned by TRC = 0.0001 bar; TRC |
Ptriple | 0.6875 | bar | N/A | Clark, Din, et al., 1951 | Uncertainty assigned by TRC = 0.0007 bar; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 150.86 | K | N/A | Angus, Armstrong, et al., 1972 | Uncertainty assigned by TRC = 0.1 K; TRC |
Tc | 150.86 | K | N/A | Gosman, McCarty, et al., 1969 | Uncertainty assigned by TRC = 0.1 K; TRC |
Tc | 150.65 | K | N/A | McCain and Ziegler, 1967 | Uncertainty assigned by TRC = 0.03 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 4.8979 | bar | N/A | Angus, Armstrong, et al., 1972 | Uncertainty assigned by TRC = 0.002 bar; TRC |
Pc | 48.9805 | bar | N/A | Gosman, McCarty, et al., 1969 | Uncertainty assigned by TRC = 0.1013 bar; TRC |
Pc | 48.5549 | bar | N/A | McCain and Ziegler, 1967 | Uncertainty assigned by TRC = 0.0709 bar; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 13.41 | mol/l | N/A | Angus, Armstrong, et al., 1972 | Uncertainty assigned by TRC = 0.005 mol/l; TRC |
ρc | 8.4029 | mol/l | N/A | Gosman, McCarty, et al., 1969 | Uncertainty assigned by TRC = 0.008 mol/l; TRC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
114.40 to 150.31 | 4.46903 | 481.012 | 22.156 | McCain and Ziegler, 1967 | Coefficents calculated by NIST from author's data. |
83.78 to 150.72 | 3.29555 | 215.24 | -22.233 | Drii and Rabinovich, 1966 | Coefficents calculated by NIST from author's data. |
129.33 to 147.40 | 4.97171 | 658.982 | 49.819 | van Itterbeek, Verbeke, et al., 1963 | Coefficents calculated by NIST from author's data. |
90.94 to 101.48 | 3.73479 | 302.683 | -6.083 | Clark, Din, et al., 1951, 2 | Coefficents calculated by NIST from author's data. |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Ion clustering 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
By formula: Li+ + Ar = (Li+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 30. ± 4. | kJ/mol | AVG | N/A | Average of 4 out of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 30. | J/mol*K | DT | McKnight and Sawina, 1973 | gas phase; ΔrS approximate; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
5.9 | 294. | IMob | Cassidy and Elford, 1985 | gas phase; M |
7.9 | 319. | DT | Keller, Beyer, et al., 1973 | gas phase; LOW E/N; M |
11. | 215. | DT | McKnight and Sawina, 1973 | gas phase; ΔrS approximate; M |
By formula: Ar+ + Ar = (Ar+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 100. ± 90. | kJ/mol | AVG | N/A | Average of 5 out of 7 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 53.6 | J/mol*K | PHPMS | Teng and Conway, 1973 | gas phase; switching reaction(N2+)Ar; Turner and Conway, 1979, Liu and Conway, 1975; M |
By formula: K+ + Ar = (K+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 12. ± 3. | kJ/mol | AVG | N/A | Average of 9 values; Individual data points |
By formula: N2+ + Ar = (N2+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 112. | kJ/mol | PD/KERD | Kim and Bowers, 1990 | gas phase; switching reaction(N2+)N2; Hiraoka and Nakajima, 1988; M |
ΔrH° | 106. | kJ/mol | PHPMS | Teng and Conway, 1973 | gas phase; switching reaction(N2+)N2; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 81.6 | J/mol*K | PD/KERD | Kim and Bowers, 1990 | gas phase; switching reaction(N2+)N2; Hiraoka and Nakajima, 1988; M |
ΔrS° | 57.3 | J/mol*K | PHPMS | Teng and Conway, 1973 | gas phase; switching reaction(N2+)N2; M |
By formula: Cs+ + Ar = (Cs+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.16 | kJ/mol | IMob | Gatland, 1984 | gas phase; M |
ΔrH° | 6.11 | kJ/mol | SCATTERING | Gislason, 1984 | gas phase; M |
ΔrH° | 8.20 | kJ/mol | IMob | Viehland, 1984 | gas phase; M |
ΔrH° | 9.54 | kJ/mol | IMob | Takebe, 1983 | gas phase; M |
ΔrH° | 9.6 | kJ/mol | IMob | Takebe, 1983 | gas phase; values from this reference are consistently too high; M |
By formula: Cr+ + Ar = (Cr+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 29. ± 2. | kJ/mol | SIDT | Kemper, Hsu, et al., 1991 | gas phase; ΔrH(0 K) = 27.4 kJ/mol, ΔrS(100 K) = 60.2 J/mol*K; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 66.1 | J/mol*K | SIDT | Kemper, Hsu, et al., 1991 | gas phase; ΔrH(0 K) = 27.4 kJ/mol, ΔrS(100 K) = 60.2 J/mol*K; M |
By formula: Na+ + Ar = (Na+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 15. ± 8.8 | kJ/mol | CIDT | Armentrout and Rodgers, 2000 | RCD |
ΔrH° | 15.5 | kJ/mol | SCATTERING | Gislason, 1984 | gas phase; M |
ΔrH° | 18.4 | kJ/mol | IMob | Viehland, 1984 | gas phase; M |
ΔrH° | 18. | kJ/mol | DT | McKnight and Sawina, 1973 | gas phase; M |
ΔrH° | 20.4 | kJ/mol | IMob | Takebe, 1983 | gas phase; M |
By formula: H3+ + Ar = (H3+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 28.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrH° | 31. ± 3. | kJ/mol | SIFT | Bedford and Smith, 1990 | gas phase; switching reaction(H3+)H2, Hiraoka and Mori, 1989; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 56.1 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: Xe+ + Ar = (Xe+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 17. | kJ/mol | PI | Dehmer and Pratt, 1982 | gas phase; M |
ΔrH° | 25. | kJ/mol | SIFT | Jones, Lister, et al., 1980 | gas phase; M |
ΔrH° | 13. | kJ/mol | PI | Ng, Tiedemann, et al., 1977 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 81.2 | J/mol*K | SIFT | Jones, Lister, et al., 1980 | gas phase; M |
By formula: (Ar+ • 2Ar) + Ar = (Ar+ • 3Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 20. ± 1. | kJ/mol | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.4 | J/mol*K | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
8.4 | 77. | PHPMS | Teng and Conway, 1973 | gas phase; M |
By formula: (N2+ • 7Ar) + Ar = (N2+ • 8Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.40 | kJ/mol | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71. | J/mol*K | N/A | Hiraoka, Mori, et al., 1992 | gas phase; Entropy change calculated or estimated; M |
By formula: (N2+ • 8Ar) + Ar = (N2+ • 9Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.36 | kJ/mol | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71. | J/mol*K | N/A | Hiraoka, Mori, et al., 1992 | gas phase; Entropy change calculated or estimated; M |
+
= ArF-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.37 | kJ/mol | TDAs | Wada, Kikkawa, et al., 2007 | gas phase; Entropy estimated; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -16.6 | kJ/mol | TDAs | Wada, Kikkawa, et al., 2007 | gas phase; Entropy estimated; B |
By formula: Rb+ + Ar = (Rb+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.49 | kJ/mol | IMob | Gatland, 1984 | gas phase; M |
ΔrH° | 8.28 | kJ/mol | IMob | Viehland, 1984 | gas phase; M |
ΔrH° | 11.9 | kJ/mol | IMob | Takebe, 1983 | gas phase; M |
By formula: (O- • 10Ar) + Ar = (O- • 11Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 2. ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 11Ar) + Ar = (O- • 12Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 3. ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 12Ar) + Ar = (O- • 13Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.8 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 13Ar) + Ar = (O- • 14Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.8 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 14Ar) + Ar = (O- • 15Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 2. ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 15Ar) + Ar = (O- • 16Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 16Ar) + Ar = (O- • 17Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 17Ar) + Ar = (O- • 18Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.8 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 18Ar) + Ar = (O- • 19Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 19Ar) + Ar = (O- • 20Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 20Ar) + Ar = (O- • 21Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 21Ar) + Ar = (O- • 22Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 22Ar) + Ar = (O- • 23Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 23Ar) + Ar = (O- • 24Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 24Ar) + Ar = (O- • 25Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.8 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 25Ar) + Ar = (O- • 26Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.8 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 9Ar) + Ar = (O- • 10Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 3. ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 2Ar) + Ar = (O- • 3Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.7 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 3Ar) + Ar = (O- • 4Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.9 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 4Ar) + Ar = (O- • 5Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.0 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 5Ar) + Ar = (O- • 6Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.0 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 6Ar) + Ar = (O- • 7Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 4.2 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 7Ar) + Ar = (O- • 8Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 4. ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 8Ar) + Ar = (O- • 9Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 4. ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • Ar) + Ar = (O- • 2Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (Ar+ • Ar) + Ar = (Ar+ • 2Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 21.2 ± 0.3 | kJ/mol | PHPMS | Turner and Conway, 1979 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84.9 | J/mol*K | PHPMS | Turner and Conway, 1979 | gas phase; M |
By formula: (N2+ • Ar) + Ar = (N2+ • 2Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 16. | kJ/mol | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; ΔrH>; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71. | J/mol*K | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; ΔrH>; M |
By formula: O- + Ar = (O- • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.2 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (Ar+ • 10Ar) + Ar = (Ar+ • 11Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.8 | J/mol*K | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
By formula: (Ar+ • 9Ar) + Ar = (Ar+ • 10Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.49 ± 0.84 | kJ/mol | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71.5 | J/mol*K | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
By formula: (D3+ • 2Ar) + Ar = (D3+ • 3Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 18.6 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 77.0 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (D3+ • 3Ar) + Ar = (D3+ • 4Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 10.2 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 69.5 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (D3+ • 4Ar) + Ar = (D3+ • 5Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.5 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.8 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (D3+ • 5Ar) + Ar = (D3+ • 6Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.1 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 79.9 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (D3+ • 6Ar) + Ar = (D3+ • 7Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.5 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 105. | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (Ar+ • 3Ar) + Ar = (Ar+ • 4Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 58.2 | J/mol*K | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Ion clustering 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 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
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 15.759 ± 0.001 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 369.2 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 346.3 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
15.763 | PIPECO | Weitzel, Mahnert, et al., 1994 | LL |
15.75962 | EVAL | Lide, 1992 | LL |
15.82 | EI | Wetzel, Baiocchi, et al., 1987 | LBLHLM |
15.760 | S | Kelly, 1987 | LBLHLM |
15.759 | PE | Kimura, Katsumata, et al., 1981 | LLK |
15.88 | EI | Clare and Sowerby, 1981 | LLK |
15.7 | EI | Freiser, 1980 | LLK |
15.75962 ± 0.00001 | S | Minnhagen, 1973 | LLK |
15.753 ± 0.002 | TE | Spohr, Guyon, et al., 1971 | LLK |
15.75962 ± 0.00001 | S | Yoshino, 1970 | RDSH |
15.759 | S | Yoshino, 1969 | RDSH |
15.713 ± 0.003 | CI | Hotop and Niehaus, 1969 | RDSH |
15.757 ± 0.005 | PE | Collin and Natalis, 1968 | RDSH |
15.74 ± 0.05 | EI | Gallegos and Klaver, 1967 | RDSH |
15.78 ± 0.03 | EI | Winters, Collins, et al., 1966 | RDSH |
15.79 | PE | Al-Joboury and Turner, 1963 | RDSH |
Ion clustering data
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics 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:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess
RCD - Robert C. Dunbar
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
By formula: Ar+ + Ar = (Ar+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 100. ± 90. | kJ/mol | AVG | N/A | Average of 5 out of 7 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 53.6 | J/mol*K | PHPMS | Teng and Conway, 1973 | gas phase; switching reaction(N2+)Ar; Turner and Conway, 1979, Liu and Conway, 1975; M |
By formula: (Ar+ • Ar) + Ar = (Ar+ • 2Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 21.2 ± 0.3 | kJ/mol | PHPMS | Turner and Conway, 1979 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84.9 | J/mol*K | PHPMS | Turner and Conway, 1979 | gas phase; M |
By formula: (Ar+ • 2Ar) + Ar = (Ar+ • 3Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 20. ± 1. | kJ/mol | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.4 | J/mol*K | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
8.4 | 77. | PHPMS | Teng and Conway, 1973 | gas phase; M |
By formula: (Ar+ • 3Ar) + Ar = (Ar+ • 4Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 58.2 | J/mol*K | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
By formula: (Ar+ • 4Ar) + Ar = (Ar+ • 5Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.8 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 67.4 | J/mol*K | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
By formula: (Ar+ • 5Ar) + Ar = (Ar+ • 6Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.8 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71.1 | J/mol*K | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
By formula: (Ar+ • 6Ar) + Ar = (Ar+ • 7Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.7 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.8 | J/mol*K | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
By formula: (Ar+ • 7Ar) + Ar = (Ar+ • 8Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.7 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.8 | J/mol*K | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
By formula: (Ar+ • 8Ar) + Ar = (Ar+ • 9Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.6 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.4 | J/mol*K | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
By formula: (Ar+ • 9Ar) + Ar = (Ar+ • 10Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.49 ± 0.84 | kJ/mol | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71.5 | J/mol*K | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
By formula: (Ar+ • 10Ar) + Ar = (Ar+ • 11Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.8 | J/mol*K | PHPMS | Hiraoka and Mori, 1989, 2 | gas phase; M |
By formula: ArNO- + 2Ar = Ar2NO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.28 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
By formula: Ar2NO- + 3Ar = Ar3NO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.44 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
By formula: Ar3NO- + 4Ar = Ar4NO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.44 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
By formula: Ar4NO- + 5Ar = Ar5NO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.44 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
By formula: Ar5NO- + 6Ar = Ar6NO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.02 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
By formula: Ar6NO- + 7Ar = Ar7NO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 3.8 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
By formula: Ar7NO- + 8Ar = Ar8NO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 3.8 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
By formula: Ar8NO- + 9Ar = Ar9NO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 2.9 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
By formula: Ar9NO- + 10Ar = Ar10NO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 2.9 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
By formula: Ar10NO- + 11Ar = Ar11NO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 2.5 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
By formula: Ar11NO- + 12Ar = Ar12NO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 2.9 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
By formula: Ar12NO- + 13Ar = Ar13NO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1.3 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
By formula: Ar13NO- + 14Ar = Ar14NO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.84 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
By formula: Br- + Ar = (Br- • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 3.3 | kJ/mol | Ther | Zhao, Yourshaw, et al., 1994 | gas phase; B |
ΔrH° | 5.86 | kJ/mol | Mobl | Gatland, 1984, 2 | gas phase; B,M |
By formula: CH3+ + Ar = (CH3+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 47.3 ± 8.4 | kJ/mol | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84.1 | J/mol*K | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
By formula: (CH3+ • Ar) + Ar = (CH3+ • 2Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 65.7 | J/mol*K | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
By formula: (CH3+ • 2Ar) + Ar = (CH3+ • 3Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.2 ± 0.8 | kJ/mol | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 93.3 | J/mol*K | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
By formula: (CH3+ • 3Ar) + Ar = (CH3+ • 4Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.2 ± 0.8 | kJ/mol | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 88.3 | J/mol*K | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
By formula: (CH3+ • 4Ar) + Ar = (CH3+ • 5Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.1 ± 0.8 | kJ/mol | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 86.2 | J/mol*K | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
By formula: (CH3+ • 5Ar) + Ar = (CH3+ • 6Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8. ± 1. | kJ/mol | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 87.9 | J/mol*K | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
By formula: (CH3+ • 6Ar) + Ar = (CH3+ • 7Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8. ± 2. | kJ/mol | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 88.7 | J/mol*K | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; M |
By formula: (CH3+ • 7Ar) + Ar = (CH3+ • 8Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.08 | kJ/mol | PHPMS | Hiraoka, Kudaka, et al., 1991 | gas phase; Entropy change calculated or estimated; M |
By formula: CO+ + Ar = (CO+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 67.4 ± 5.9 | kJ/mol | PIPECO | Norwood, Guo, et al., 1989 | gas phase; CO+(X) ground state; M |
By formula: CO2+ + Ar = (CO2+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 25. | kJ/mol | PI | Pratt and Dehmer, 1983 | gas phase; M |
By formula: Co+ + Ar = (Co+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 49.4 | kJ/mol | PDis | Asher, Bellert, et al., 1994 | RCD |
By formula: Cr+ + Ar = (Cr+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 29. ± 2. | kJ/mol | SIDT | Kemper, Hsu, et al., 1991 | gas phase; ΔrH(0 K) = 27.4 kJ/mol, ΔrS(100 K) = 60.2 J/mol*K; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 66.1 | J/mol*K | SIDT | Kemper, Hsu, et al., 1991 | gas phase; ΔrH(0 K) = 27.4 kJ/mol, ΔrS(100 K) = 60.2 J/mol*K; M |
By formula: Cs+ + Ar = (Cs+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.16 | kJ/mol | IMob | Gatland, 1984 | gas phase; M |
ΔrH° | 6.11 | kJ/mol | SCATTERING | Gislason, 1984 | gas phase; M |
ΔrH° | 8.20 | kJ/mol | IMob | Viehland, 1984 | gas phase; M |
ΔrH° | 9.54 | kJ/mol | IMob | Takebe, 1983 | gas phase; M |
ΔrH° | 9.6 | kJ/mol | IMob | Takebe, 1983 | gas phase; values from this reference are consistently too high; M |
By formula: D3+ + Ar = (D3+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 29.1 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 60.7 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (D3+ • Ar) + Ar = (D3+ • 2Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 20.1 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 73.2 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (D3+ • 2Ar) + Ar = (D3+ • 3Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 18.6 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 77.0 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (D3+ • 3Ar) + Ar = (D3+ • 4Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 10.2 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 69.5 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (D3+ • 4Ar) + Ar = (D3+ • 5Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.5 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.8 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (D3+ • 5Ar) + Ar = (D3+ • 6Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.1 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 79.9 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (D3+ • 6Ar) + Ar = (D3+ • 7Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.5 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 105. | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
+
= ArF-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.37 | kJ/mol | TDAs | Wada, Kikkawa, et al., 2007 | gas phase; Entropy estimated; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -16.6 | kJ/mol | TDAs | Wada, Kikkawa, et al., 2007 | gas phase; Entropy estimated; B |
By formula: Fe+ + Ar = (Fe+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11. ± 7.9 | kJ/mol | CIDT | Rodgers and Armentrout, 2000 | RCD |
By formula: H2+ + Ar = (H2+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 100. | kJ/mol | SIFT | Bedford and Smith, 1990 | gas phase; switching reaction(Ar+)Ar, ΔrH>; M |
By formula: H3+ + Ar = (H3+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 28.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrH° | 31. ± 3. | kJ/mol | SIFT | Bedford and Smith, 1990 | gas phase; switching reaction(H3+)H2, Hiraoka and Mori, 1989; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 56.1 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (H3+ • Ar) + Ar = (H3+ • 2Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 19.1 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 66.9 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (H3+ • 2Ar) + Ar = (H3+ • 3Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 17.9 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.4 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (H3+ • 3Ar) + Ar = (H3+ • 4Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 10.3 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 67.4 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (H3+ • 4Ar) + Ar = (H3+ • 5Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.5 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 69.9 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (H3+ • 5Ar) + Ar = (H3+ • 6Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.1 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 78.2 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: (H3+ • 6Ar) + Ar = (H3+ • 7Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.5 ± 0.4 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 96.2 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
By formula: Hg+ + Ar = (Hg+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 22. ± 2. | kJ/mol | PI | Linn, Brom, et al., 1985 | gas phase; M |
By formula: I- + Ar = (I- • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 2.5 | kJ/mol | Ther | Zhao, Yourshaw, et al., 1994 | gas phase; B |
By formula: K+ + Ar = (K+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 12. ± 3. | kJ/mol | AVG | N/A | Average of 9 values; Individual data points |
By formula: Kr+ + Ar = (Kr+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 51.0 | kJ/mol | PI | Dehmer and Pratt, 1982 | gas phase; M |
ΔrH° | 56.9 | kJ/mol | PI | Ng, Tiedemann, et al., 1977 | gas phase; M |
By formula: Li+ + Ar = (Li+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 30. ± 4. | kJ/mol | AVG | N/A | Average of 4 out of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 30. | J/mol*K | DT | McKnight and Sawina, 1973 | gas phase; ΔrS approximate; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
5.9 | 294. | IMob | Cassidy and Elford, 1985 | gas phase; M |
7.9 | 319. | DT | Keller, Beyer, et al., 1973 | gas phase; LOW E/N; M |
11. | 215. | DT | McKnight and Sawina, 1973 | gas phase; ΔrS approximate; M |
By formula: Mg+ + Ar = (Mg+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.6 ± 6.7 | kJ/mol | CIDT | Andersen, Muntean, et al., 2000 | RCD |
By formula: N+ + Ar = (N+ • Ar)
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
118. (+44.,-0.) | CID | Haynes, Freysinger, et al., 1995 | gas phase; giuded ion beam CID; M |
By formula: NO- + Ar = (NO- • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.4 ± 3.8 | kJ/mol | N/A | Hendricks, de Clercq, et al., 2002 | gas phase; B |
ΔrH° | 6.7 ± 1.3 | kJ/mol | N/A | Bowen and Eaton, 1988 | gas phase; B |
By formula: N2+ + Ar = (N2+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 112. | kJ/mol | PD/KERD | Kim and Bowers, 1990 | gas phase; switching reaction(N2+)N2; Hiraoka and Nakajima, 1988; M |
ΔrH° | 106. | kJ/mol | PHPMS | Teng and Conway, 1973 | gas phase; switching reaction(N2+)N2; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 81.6 | J/mol*K | PD/KERD | Kim and Bowers, 1990 | gas phase; switching reaction(N2+)N2; Hiraoka and Nakajima, 1988; M |
ΔrS° | 57.3 | J/mol*K | PHPMS | Teng and Conway, 1973 | gas phase; switching reaction(N2+)N2; M |
By formula: (N2+ • Ar) + Ar = (N2+ • 2Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 16. | kJ/mol | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; ΔrH>; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71. | J/mol*K | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; ΔrH>; M |
By formula: (N2+ • 2Ar) + Ar = (N2+ • 3Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7.3 ± 0.8 | kJ/mol | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 57.3 | J/mol*K | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; M |
By formula: (N2+ • 3Ar) + Ar = (N2+ • 4Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 74.9 | J/mol*K | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; M |
By formula: (N2+ • 4Ar) + Ar = (N2+ • 5Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.6 ± 0.8 | kJ/mol | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71.1 | J/mol*K | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; M |
By formula: (N2+ • 5Ar) + Ar = (N2+ • 6Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.8 | J/mol*K | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; M |
By formula: (N2+ • 6Ar) + Ar = (N2+ • 7Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.4 ± 0.8 | kJ/mol | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.4 | J/mol*K | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; M |
By formula: (N2+ • 7Ar) + Ar = (N2+ • 8Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.40 | kJ/mol | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71. | J/mol*K | N/A | Hiraoka, Mori, et al., 1992 | gas phase; Entropy change calculated or estimated; M |
By formula: (N2+ • 8Ar) + Ar = (N2+ • 9Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.36 | kJ/mol | PHPMS | Hiraoka, Mori, et al., 1992 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71. | J/mol*K | N/A | Hiraoka, Mori, et al., 1992 | gas phase; Entropy change calculated or estimated; M |
By formula: Na+ + Ar = (Na+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 15. ± 8.8 | kJ/mol | CIDT | Armentrout and Rodgers, 2000 | RCD |
ΔrH° | 15.5 | kJ/mol | SCATTERING | Gislason, 1984 | gas phase; M |
ΔrH° | 18.4 | kJ/mol | IMob | Viehland, 1984 | gas phase; M |
ΔrH° | 18. | kJ/mol | DT | McKnight and Sawina, 1973 | gas phase; M |
ΔrH° | 20.4 | kJ/mol | IMob | Takebe, 1983 | gas phase; M |
By formula: O- + Ar = (O- • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.2 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • Ar) + Ar = (O- • 2Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 2Ar) + Ar = (O- • 3Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.7 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 3Ar) + Ar = (O- • 4Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.9 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 4Ar) + Ar = (O- • 5Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.0 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 5Ar) + Ar = (O- • 6Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.0 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 6Ar) + Ar = (O- • 7Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 4.2 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 7Ar) + Ar = (O- • 8Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 4. ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 8Ar) + Ar = (O- • 9Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 4. ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 9Ar) + Ar = (O- • 10Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 3. ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 10Ar) + Ar = (O- • 11Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 2. ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 11Ar) + Ar = (O- • 12Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 3. ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 12Ar) + Ar = (O- • 13Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.8 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 13Ar) + Ar = (O- • 14Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.8 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 14Ar) + Ar = (O- • 15Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 2. ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 15Ar) + Ar = (O- • 16Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 16Ar) + Ar = (O- • 17Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 17Ar) + Ar = (O- • 18Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.8 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 18Ar) + Ar = (O- • 19Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 19Ar) + Ar = (O- • 20Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 20Ar) + Ar = (O- • 21Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 21Ar) + Ar = (O- • 22Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 22Ar) + Ar = (O- • 23Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 23Ar) + Ar = (O- • 24Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 24Ar) + Ar = (O- • 25Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.8 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: (O- • 25Ar) + Ar = (O- • 26Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.8 ± 8.4 | kJ/mol | N/A | Arnold, Hendricks, et al., 1995 | gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B |
By formula: O2- + Ar = (O2- • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.95 | kJ/mol | N/A | Bowen and Eaton, 1988 | gas phase; Bound by 70 meV relative to EA(O2-.); B |
By formula: Rb+ + Ar = (Rb+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.49 | kJ/mol | IMob | Gatland, 1984 | gas phase; M |
ΔrH° | 8.28 | kJ/mol | IMob | Viehland, 1984 | gas phase; M |
ΔrH° | 11.9 | kJ/mol | IMob | Takebe, 1983 | gas phase; M |
By formula: Xe+ + Ar = (Xe+ • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 17. | kJ/mol | PI | Dehmer and Pratt, 1982 | gas phase; M |
ΔrH° | 25. | kJ/mol | SIFT | Jones, Lister, et al., 1980 | gas phase; M |
ΔrH° | 13. | kJ/mol | PI | Ng, Tiedemann, et al., 1977 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 81.2 | J/mol*K | SIFT | Jones, Lister, et al., 1980 | gas phase; M |
Mass spectrum (electron ionization)
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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | DOW CHEMICAL COMPANY / ASTM E14-UNCERTIFIED SPECTRUM 1 |
NIST MS number | 34321 |
References
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering 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.
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Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), References
- Symbols used in this document:
IE (evaluated) Recommended ionization energy Pc Critical pressure Ptriple Triple point pressure S°gas,1 bar Entropy of gas at standard conditions (1 bar) T Temperature Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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