Ethane

Gas phase thermochemistry data

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

Data compiled as indicated in comments:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
ΔfH°gas-20. ± 0.1kcal/molReviewManion, 2002adopted recommendation of Gurvich, Veyts, et al., 1991; DRB
ΔfH°gas-20.04 ± 0.07kcal/molCcbPittam and Pilcher, 1972ALS
ΔfH°gas-20.24 ± 0.12kcal/molCcbProsen and Rossini, 1945Hf derived from Heat of Hydrogenation; ALS
Quantity Value Units Method Reference Comment
ΔcH°gas-373.01 ± 0.06kcal/molCcbPittam and Pilcher, 1972Corresponding ΔfHºgas = -20.04 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS
ΔcH°gas-372.82 ± 0.11kcal/molCcbProsen and Rossini, 1945Hf derived from Heat of Hydrogenation; Corresponding ΔfHºgas = -20.23 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS
ΔcH°gas-372.81 ± 0.11kcal/molCcbRossini, 1934Corresponding ΔfHºgas = -20.24 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
8.533100.Gurvich, Veyts, et al., 1989p=1 bar. Recommended entropies and heat capacities are in good agreement with those obtained from other statistical thermodynamic calculations [ Pitzer K.S., 1944, Chao J., 1973, Pamidimukkala K.M., 1982].; GT
10.11200.
12.55298.15
12.60300.
15.65400.
18.63500.
21.32600.
23.70700.
25.798800.
27.655900.
29.2901000.
30.7241100.
31.9791200.
33.0761300.
34.0341400.
34.8711500.
35.6071600.
36.2501700.
36.8161800.
37.3181900.
37.7632000.
38.1572100.
38.5092200.
38.8222300.
39.1042400.
39.3572500.
39.5872600.
39.7922700.
39.9812800.
40.1532900.
40.3083000.

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
9.957 ± 0.074189.20Halford J.O., 1957Please also see Eucken A., 1933, Kistiakowsky G.B., 1939, Dailey B.P., 1943.; GT
10.34 ± 0.076209.30
10.77 ± 0.081229.65
11.30 ± 0.084249.90
11.27 ± 0.084250.15
11.87 ± 0.088272.00
11.83 ± 0.01272.07
12.11 ± 0.10279.00
12.46 ± 0.093292.00
12.73 ± 0.02302.70
13.72 ± 0.01335.82
14.08347.65
14.43359.75
14.59 ± 0.024364.78
14.84 ± 0.11373.60
15.27387.55
17.31451.95
19.14520.55
20.62561.65
21.62603.25

Condensed phase thermochemistry data

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

Data compiled by: Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
S°liquid30.28cal/mol*KN/AWitt and Kemp, 1937Entropy from 0 to 15 K calculated using a Debye function.

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
16.41100.Atake and Chihara, 1976T = 50 to 100 K. Data given graphically. Cp = 0.69933 (T/K) - 2.385 J/mol*K (50 to 70 K, for solid).
16.494.Roder, 1976From data 90.3 to 94 K. Average value over range.
16.36100.32Roder, 1976, 2T = 93 to 301 K (saturation line), 91 to 330 K, pressures from 0 to 33 MPa.
17.26180.Witt and Kemp, 1937T = 15 to 185 K.
17.80200.Wiebe, Hubbard, et al., 1930T = 67 to 305.2 K. Heat capacity of saturated liquid given to 295 K is 136.1 J/mol*K.

Phase change data

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

Data compiled as indicated in comments:
DH - Eugene S. Domalski and Elizabeth D. Hearing
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil184.6 ± 0.6KAVGN/AAverage of 23 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus101.KN/AStreng, 1971Uncertainty assigned by TRC = 1. K; TRC
Tfus89.2KN/ATimmermans, 1935Uncertainty assigned by TRC = 1.5 K; TRC
Quantity Value Units Method Reference Comment
Ttriple91. ± 6.KAVGN/AAverage of 10 values; Individual data points
Quantity Value Units Method Reference Comment
Ptriple0.000011atmN/AYounglove and Ely, 1987Uncertainty assigned by TRC = 5.×10-9 atm; TRC
Quantity Value Units Method Reference Comment
Tc305.3 ± 0.3KAVGN/AAverage of 41 out of 46 values; Individual data points
Quantity Value Units Method Reference Comment
Pc49. ± 1.atmAVGN/AAverage of 28 out of 29 values; Individual data points
Quantity Value Units Method Reference Comment
Vc0.147 ± 0.002l/molAVGN/AAverage of 6 values; Individual data points
Quantity Value Units Method Reference Comment
ρc6.9 ± 0.4mol/lAVGN/AAverage of 19 values; Individual data points
Quantity Value Units Method Reference Comment
ΔvapH°2.33kcal/molN/AMajer and Svoboda, 1985 

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
3.5141184.1N/AWitt and Kemp, 1937DH
3.66288.AStephenson and Malanowski, 1987Based on data from 273. to 305. K.; AC
3.75170.AStephenson and Malanowski, 1987Based on data from 154. to 185. K.; AC
4.23114.AStephenson and Malanowski, 1987Based on data from 95. to 129. K.; AC
3.56214.AStephenson and Malanowski, 1987Based on data from 185. to 229. K.; AC
3.56259.AStephenson and Malanowski, 1987Based on data from 228. to 274. K.; AC
4.09129.N/ACarruth and Kobayashi, 1973Based on data from 91. to 144. K.; AC
3.51210.N/AReid, 1972AC
3.51184.N/AWitt and Kemp, 1937AC
3.66185.N/ALoomis and Walters, 1926Based on data from 136. to 200. K.; AC

Enthalpy of vaporization

ΔvapH = A exp(-βTr) (1 − Tr)β
    ΔvapH = Enthalpy of vaporization (at saturation pressure) (kcal/mol)
    Tr = reduced temperature (T / Tc)

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Temperature (K) A (kcal/mol) β Tc (K) Reference
289. to 301.7.0340.3696305.4Majer and Svoboda, 1985

Entropy of vaporization

ΔvapS (cal/mol*K) Temperature (K) Reference Comment
19.09184.1Witt and Kemp, 1937DH

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
91.33 to 144.134.50135791.3-6.422Carruth and Kobayashi, 1973Coefficents calculated by NIST from author's data.
135.74 to 199.913.93264659.739-16.719Loomis and Walters, 1926Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

ΔsubH (kcal/mol) Temperature (K) Method Reference Comment
5.4085.N/ARegnier, 1972Based on data from 80. to 90. K.; AC
4.9090.BBondi, 1963AC

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Reference Comment
0.13990.341Atake and Chihara, 1976Triple point.; DH
0.66789.5Domalski and Hearing, 1996AC
0.1490.3Atake and Chihara, 1976AC

Entropy of fusion

ΔfusS (cal/mol*K) Temperature (K) Reference Comment
1.5490.341Atake and Chihara, 1976Triple; DH

Enthalpy of phase transition

ΔHtrs (kcal/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.545489.813crystaline, IIcrystaline, IAtake and Chihara, 1976DH
0.682889.87crystaline, IliquidWitt and Kemp, 1937DH
0.667589.50crystaline, IliquidWiebe, Hubbard, et al., 1930DH
0.5825889.77crystaline, IIcrystaline, IRoder, 1976DH

Entropy of phase transition

ΔStrs (cal/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
6.09089.813crystaline, IIcrystaline, IAtake and Chihara, 1976DH
7.6089.87crystaline, IliquidWitt and Kemp, 1937DH
7.4689.50crystaline, IliquidWiebe, Hubbard, et al., 1930DH
6.48989.77crystaline, IIcrystaline, IRoder, 1976DH

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

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

Data compiled as indicated in comments:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
MS - José A. Martinho Simões
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
RCD - Robert C. Dunbar

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

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

By formula: Co+ + C2H6 = (Co+ • C2H6)

Quantity Value Units Method Reference Comment
ΔrS°22.3cal/mol*KSIDTKemper, Bushnell, et al., 1993gas phase; switching reaction(Co+)CH4, ΔrS(500 K); M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
23.9 (+1.2,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M
28.0 (+1.6,-0.) SIDTKemper, Bushnell, et al., 1993gas phase; switching reaction(Co+)CH4, ΔrS(500 K); M

(Cobalt ion (1+) • Methane) + Ethane = (Cobalt ion (1+) • Ethane • Methane)

By formula: (Co+ • CH4) + C2H6 = (Co+ • C2H6 • CH4)

Quantity Value Units Method Reference Comment
ΔrS°25.9cal/mol*KSIDTKemper, Bushnell, et al., 1993gas phase; switching reaction(Co+).2CH4, ΔrS(480 K); M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
28.4 (+1.3,-0.) SIDTKemper, Bushnell, et al., 1993gas phase; switching reaction(Co+).2CH4, ΔrS(480 K); M

3Water (g) + Aluminum, triethyl- (l) = AlH3O3 (amorphous) + 3Ethane (g)

By formula: 3H2O (g) + C6H15Al (l) = AlH3O3 (amorphous) + 3C2H6 (g)

Quantity Value Units Method Reference Comment
ΔrH°-154.7 ± 1.5kcal/molRSCFowell, 1961Please also see Cox and Pilcher, 1970. Liquid triethylaluminum contains a very small molar fraction of monomer at 298 K, ca. 0.1% Smith, 1967, so that the "real" liquid should be described as [Al(Et)3]2.; MS

C2H5- + Hydrogen cation = Ethane

By formula: C2H5- + H+ = C2H6

Quantity Value Units Method Reference Comment
ΔrH°420.1 ± 2.0kcal/molBranDePuy, Gronert, et al., 1989gas phase; B
ΔrH°421.0 ± 2.0kcal/molBranDePuy, Bierbaum, et al., 1984gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°411.7 ± 2.1kcal/molH-TSDePuy, Gronert, et al., 1989gas phase; B

(Cobalt ion (1+) • Ethane) + Methane = (Cobalt ion (1+) • Methane • Ethane)

By formula: (Co+ • C2H6) + CH4 = (Co+ • CH4 • C2H6)

Quantity Value Units Method Reference Comment
ΔrS°26.4cal/mol*KSIDTKemper, Bushnell, et al., 1993gas phase; ΔrS(490 K); M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
24.4 (+1.1,-0.) SIDTKemper, Bushnell, et al., 1993gas phase; ΔrS(490 K); M

Hydrogen bromide (g) + ethyllithium (cr) = Ethane (g) + Lithium bromide (cr)

By formula: HBr (g) + C2H5Li (cr) = C2H6 (g) + BrLi (cr)

Quantity Value Units Method Reference Comment
ΔrH°-82.62 ± 0.48kcal/molRSCHolm, 1974Please also see Pedley and Rylance, 1977. The reaction enthalpy was quoted from Pedley and Rylance, 1977. See Liebman, Martinho Simões, et al., 1995 for comments; MS

C5O5W (g) + Ethane (g) = C7H6O5W (g)

By formula: C5O5W (g) + C2H6 (g) = C7H6O5W (g)

Quantity Value Units Method Reference Comment
ΔrH°-7.4 ± 2.0kcal/molEqGBrown, Ishikawa, et al., 1990Temperature range: ca. 300-350 K; MS
ΔrH°-9.7 ± 3.0kcal/molEqGIshikawa, Brown, et al., 1988Temperature range: 298-363 K; MS

Iron ion (1+) + Ethane = (Iron ion (1+) • Ethane)

By formula: Fe+ + C2H6 = (Fe+ • C2H6)

Quantity Value Units Method Reference Comment
ΔrH°18. ± 3.kcal/molMKERCarpenter, van Koppen, et al., 1995gas phase; M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
15.3 (+1.4,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

Ethane, 1,2-dichloro- + 2Hydrogen = Ethane + 2Hydrogen chloride

By formula: C2H4Cl2 + 2H2 = C2H6 + 2HCl

Quantity Value Units Method Reference Comment
ΔrH°-34.18 ± 0.23kcal/molChydLacher, Amador, et al., 1967gas phase; Reanalyzed by Cox and Pilcher, 1970, 2, Original value = -35.32 ± 0.12 kcal/mol; At 250 C; ALS

2Hydrogen + Ethane, 1,1-dichloro- = Ethane + 2Hydrogen chloride

By formula: 2H2 + C2H4Cl2 = C2H6 + 2HCl

Quantity Value Units Method Reference Comment
ΔrH°-33.66 ± 0.25kcal/molChydLacher, Amador, et al., 1967gas phase; Reanalyzed by Cox and Pilcher, 1970, 2, Original value = -34.65 ± 0.12 kcal/mol; At 250C; ALS

2Hydrogen + Acetylene = Ethane

By formula: 2H2 + C2H2 = C2H6

Quantity Value Units Method Reference Comment
ΔrH°-74.58 ± 0.15kcal/molChydConn, Kistiakowsky, et al., 1939gas phase; Reanalyzed by Cox and Pilcher, 1970, 2, Original value = -75.06 ± 0.66 kcal/mol; At 355 K; ALS

Diethylzinc (l) + (Sulfuric Acid • 100Water) (solution) = 2Ethane (g) + (zinc sulphate • 100Water) (solution)

By formula: C4H10Zn (l) + (H2O4S • 100H2O) (solution) = 2C2H6 (g) + (O4SZn • 100H2O) (solution)

Quantity Value Units Method Reference Comment
ΔrH°-84.7 ± 1.0kcal/molRSCCarson, Hartley, et al., 1949Please also see Pedley and Rylance, 1977 and Cox and Pilcher, 1970.; MS

Hydrogen + Ethylene = Ethane

By formula: H2 + C2H4 = C2H6

Quantity Value Units Method Reference Comment
ΔrH°-32.6 ± 0.5kcal/molChydKistiakowsky and Nickle, 1951gas phase; ALS
ΔrH°-32.58 ± 0.06kcal/molChydKistiakowsky, Romeyn, et al., 1935gas phase; ALS

2Hydrogen chloride (g) + Aluminum, chlorodiethyl- (l) = AlCl3 (cr) + 2Ethane (g)

By formula: 2HCl (g) + C4H10AlCl (l) = AlCl3 (cr) + 2C2H6 (g)

Quantity Value Units Method Reference Comment
ΔrH°-63.34 ± 0.79kcal/molRSCShaulov and Shmyreva, 1968The reaction enthalpy was derived from data in Shaulov and Shmyreva, 1968.; MS

C2H4+ + Ethane = (C2H4+ • Ethane)

By formula: C2H4+ + C2H6 = (C2H4+ • C2H6)

Quantity Value Units Method Reference Comment
ΔrH°15.3kcal/molPHPMSHiraoka and Kebarle, 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°21.cal/mol*KPHPMSHiraoka and Kebarle, 1980gas phase; M

2Hydrogen + Ethene, chloro- = Ethane + Hydrogen chloride

By formula: 2H2 + C2H3Cl = C2H6 + HCl

Quantity Value Units Method Reference Comment
ΔrH°-51.2 ± 0.2kcal/molChydLacher, Emery, et al., 1956gas phase; At 298 K, see Lacher, Kianpour, et al., 1956; ALS

Hydrogen bromide (g) + C2H5BrMg (solution) = Ethane (solution) + Br2Mg (solution)

By formula: HBr (g) + C2H5BrMg (solution) = C2H6 (solution) + Br2Mg (solution)

Quantity Value Units Method Reference Comment
ΔrH°-71.51 ± 0.53kcal/molRSCHolm, 1981solvent: Diethyl ether; MS

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

By formula: (Co+ • 2C2H6) + C2H6 = (Co+ • 3C2H6)

Quantity Value Units Method Reference Comment
ΔrH°12.kcal/molSIDTKemper, Bushnell, et al., 1993gas phase; ΔrH<; M

Aluminum ion (1+) + Ethane = (Aluminum ion (1+) • Ethane)

By formula: Al+ + C2H6 = (Al+ • C2H6)

Quantity Value Units Method Reference Comment
ΔrH°9.0 ± 2.0kcal/molCIDC,EqGStockigt, Schwarz, et al., 1996Anchored to theory; RCD

2Hydrogen + Vinyl bromide = Hydrogen bromide + Ethane

By formula: 2H2 + C2H3Br = HBr + C2H6

Quantity Value Units Method Reference Comment
ΔrH°-47.61 ± 0.46kcal/molChydLacher, Kianpour, et al., 1957gas phase; ALS

Hydrogen + 2Ethane, iodo- = 2Ethane + Iodine

By formula: H2 + 2C2H5I = 2C2H6 + I2

Quantity Value Units Method Reference Comment
ΔrH°-21.2 ± 0.80kcal/molChydAshcroft, Carson, et al., 1965liquid phase; ALS

Hydrogen + Ethyl bromide = Hydrogen bromide + Ethane

By formula: H2 + C2H5Br = HBr + C2H6

Quantity Value Units Method Reference Comment
ΔrH°-14.11 ± 0.27kcal/molChydFowell, Lacher, et al., 1965gas phase; ALS

Hydrogen + 2Ethyl bromide = 2Ethane + Bromine

By formula: H2 + 2C2H5Br = 2C2H6 + Br2

Quantity Value Units Method Reference Comment
ΔrH°5.6 ± 3.0kcal/molChydAshcroft, Carson, et al., 1965liquid phase; ALS

Hydrogen + Ethyl Chloride = Ethane + Hydrogen chloride

By formula: H2 + C2H5Cl = C2H6 + HCl

Quantity Value Units Method Reference Comment
ΔrH°-16.6 ± 0.1kcal/molChydLacher, Emery, et al., 1956gas phase; ALS

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

By formula: Ni+ + C2H6 = (Ni+ • C2H6)

Quantity Value Units Method Reference Comment
ΔrH°29. ± 3.kcal/molMKERCarpenter, van Koppen, et al., 1995gas phase; M

Henry's Law data

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

Data compiled by: Rolf Sander

Henry's Law constant (water solution)

kH(T) = k°H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
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)

k°H (mol/(kg*bar)) d(ln(kH))/d(1/T) (K) Method Reference Comment
0.00192300.LN/A 
0.0020 QN/A missing citation give several references for the Henry's law constants but don't assign them to specific species.
0.0020 LN/A 
0.00182400.LN/A 
0.0020 VN/A 
0.011 VN/A 

Gas phase ion energetics data

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

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
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

View reactions leading to C2H6+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)11.52 ± 0.04eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)142.5kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity136.2kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
11. ± 1.PIAu, Cooper, et al., 1993LL
11.52ESTLuo and Pacey, 1992LL
11.57EIPlessis and Marmet, 1987LBLHLM
11.56 ± 0.02EIPlessis and Marmet, 1987, 2LBLHLM
11.4 ± 0.4EIChatham, Hils, et al., 1984LBLHLM
11.5 ± 0.1EISuzuki and Maeda, 1977LLK
11.56 ± 0.02PEBieri, Burger, et al., 1977LLK
11.76 ± 0.05EIFlesch and Svec, 1973LLK
11.45 ± 0.05TEStockbauer and Inghram, 1971LLK
11.51PEDewar and Worley, 1969RDSH
11.66 ± 0.05EIWilliams and Hamill, 1968RDSH
11.55CICermak, 1968RDSH
11.56PEBaker, Baker, et al., 1968RDSH
11.521 ± 0.007PINicholson, 1965RDSH
11.99PEKimura, Katsumata, et al., 1981Vertical value; LLK
12.0PEBieri and Asbrink, 1980Vertical value; LLK
12.1 ± 0.1PEBieri, Burger, et al., 1977Vertical value; LLK
12.00PEDoucet, Sauvageau, et al., 1975Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C+43. ± 1.?PIAu, Cooper, et al., 1993LL
C+20.3 ± 0.2CH4+H2EIPlessis and Marmet, 1987, 2LBLHLM
C+29.6 ± 0.2?EISuzuki and Maeda, 1977, 2LLK
CH+31. ± 1.?PIAu, Cooper, et al., 1993LL
CH+20.10 ± 0.08CH3+H2EIPlessis and Marmet, 1987, 2LBLHLM
CH+26.7 ± 0.5?EISuzuki and Maeda, 1977, 2LLK
CH2+25. ± 1.?PIAu, Cooper, et al., 1993LL
CH2+14.69 ± 0.05CH4EIPlessis and Marmet, 1987, 2LBLHLM
CH2+17. ± 2.?EIChatham, Hils, et al., 1984LBLHLM
CH2+17.3 ± 0.15?EISuzuki and Maeda, 1977, 2LLK
CH3+14. ± 1.CH3PIAu, Cooper, et al., 1993LL
CH3+13.65 ± 0.04CH3EIPlessis and Marmet, 1987, 2LBLHLM
CH3+13.56 ± 0.04CH3-EIPlessis and Marmet, 1987, 2LBLHLM
CH3+14. ± 2.CH3EIChatham, Hils, et al., 1984LBLHLM
CH3+14.1 ± 0.1?EISuzuki and Maeda, 1977, 2LLK
CH3+13.46 ± 0.05CH3EIWilliams and Hamill, 1968RDSH
CH4+20.4 ± 0.3?EISuzuki and Maeda, 1977, 2LLK
C2+40. ± 1.?PIAu, Cooper, et al., 1993LL
C2+22.9 ± 0.33H2EIPlessis and Marmet, 1987, 2LBLHLM
C2+31.5 ± 0.2?EISuzuki and Maeda, 1977, 2LLK
C2H+27. ± 1.?PIAu, Cooper, et al., 1993LL
C2H+22.4 ± 0.32H2+HEIPlessis and Marmet, 1987, 2LBLHLM
C2H+25.6 ± 0.2?EISuzuki and Maeda, 1977, 2LLK
C2H2+14. ± 1.2H2PIAu, Cooper, et al., 1993LL
C2H2+14.51 ± 0.042H2EIPlessis and Marmet, 1987, 2LBLHLM
C2H2+15. ± 1.?EIChatham, Hils, et al., 1984LBLHLM
C2H2+14.7 ± 0.1?EISuzuki and Maeda, 1977, 2LLK
C2H2+15.35 ± 0.502H2EID'Or, Collin, et al., 1966RDSH
C2H3+14. ± 1.H2+HPIAu, Cooper, et al., 1993LL
C2H3+13.76 ± 0.08H2+H-EIPlessis and Marmet, 1987, 2LBLHLM
C2H3+14.50 ± 0.04H2+HEIPlessis and Marmet, 1987, 2LBLHLM
C2H3+14.5 ± 0.4H2+HEIChatham, Hils, et al., 1984LBLHLM
C2H3+14.6 ± 0.1H2+HEISuzuki and Maeda, 1977, 2LLK
C2H3+15.22 ± 0.10H2+HEID'Or, Collin, et al., 1966RDSH
C2H4+11. ± 1.H2PIAu, Cooper, et al., 1993LL
C2H4+11.81 ± 0.05H2EIPlessis and Marmet, 1987, 2LBLHLM
C2H4+12.1 ± 0.4H2EIChatham, Hils, et al., 1984LBLHLM
C2H4+12.1 ± 0.1H2PIPECOBombach, Dannacher, et al., 1984T = 0K; LBLHLM
C2H4+12.1 ± 0.1H2EISuzuki and Maeda, 1977, 2LLK
C2H4+12.08 ± 0.03H2PIChupka and Berkowitz, 1967RDSH
C2H4+12.24 ± 0.10H2EID'Or, Collin, et al., 1966RDSH
C2H5+12. ± 1.HPIAu, Cooper, et al., 1993LL
C2H5+12.45 ± 0.008HEIPlessis and Marmet, 1987, 2LBLHLM
C2H5+12.1 ± 0.4HEIChatham, Hils, et al., 1984LBLHLM
C2H5+12.4 ± 0.1HPIPECOBombach, Dannacher, et al., 1984T = 0K; LBLHLM
C2H5+12.40HPITraeger and McLoughlin, 1981LLK
C2H5+12.0 ± 0.1HEISuzuki and Maeda, 1977, 2LLK
C2H5+12.66 ± 0.05HEIWilliams and Hamill, 1968RDSH
C2H5+12.00 ± 0.05H-PIChupka and Berkowitz, 1967RDSH
C2H5+12.65 ± 0.08HPIChupka and Berkowitz, 1967RDSH
H+21. ± 1.?PIAu, Cooper, et al., 1993LL
H+23.5 ± 0.5?EISuzuki and Maeda, 1977, 2LLK
H2+30. ± 1.?PIAu, Cooper, et al., 1993LL
H2+35.0 ± 0.5?EISuzuki and Maeda, 1977, 2LLK
H2+31. ± 1.C2H4+?EINewton, Sciamanna, et al., 1970RDSH
H3+33. ± 1.?PIAu, Cooper, et al., 1993LL
H3+32. ± 1.?EIFuchs, 1972LLK

De-protonation reactions

C2H5- + Hydrogen cation = Ethane

By formula: C2H5- + H+ = C2H6

Quantity Value Units Method Reference Comment
ΔrH°420.1 ± 2.0kcal/molBranDePuy, Gronert, et al., 1989gas phase; B
ΔrH°421.0 ± 2.0kcal/molBranDePuy, Bierbaum, et al., 1984gas phase; B
Quantity Value Units Method Reference Comment
ΔrG°411.7 ± 2.1kcal/molH-TSDePuy, Gronert, et al., 1989gas phase; B

Ion clustering data

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

Data compiled as indicated in comments:
RCD - Robert C. Dunbar
M - 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

Aluminum ion (1+) + Ethane = (Aluminum ion (1+) • Ethane)

By formula: Al+ + C2H6 = (Al+ • C2H6)

Quantity Value Units Method Reference Comment
ΔrH°9.0 ± 2.0kcal/molCIDC,EqGStockigt, Schwarz, et al., 1996Anchored to theory; RCD

C2H4+ + Ethane = (C2H4+ • Ethane)

By formula: C2H4+ + C2H6 = (C2H4+ • C2H6)

Quantity Value Units Method Reference Comment
ΔrH°15.3kcal/molPHPMSHiraoka and Kebarle, 1980gas phase; M
Quantity Value Units Method Reference Comment
ΔrS°21.cal/mol*KPHPMSHiraoka and Kebarle, 1980gas phase; M

(Cobalt ion (1+) • Methane) + Ethane = (Cobalt ion (1+) • Ethane • Methane)

By formula: (Co+ • CH4) + C2H6 = (Co+ • C2H6 • CH4)

Quantity Value Units Method Reference Comment
ΔrS°25.9cal/mol*KSIDTKemper, Bushnell, et al., 1993gas phase; switching reaction(Co+).2CH4, ΔrS(480 K); M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
28.4 (+1.3,-0.) SIDTKemper, Bushnell, et al., 1993gas phase; switching reaction(Co+).2CH4, ΔrS(480 K); M

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

By formula: Co+ + C2H6 = (Co+ • C2H6)

Quantity Value Units Method Reference Comment
ΔrS°22.3cal/mol*KSIDTKemper, Bushnell, et al., 1993gas phase; switching reaction(Co+)CH4, ΔrS(500 K); M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
23.9 (+1.2,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M
28.0 (+1.6,-0.) SIDTKemper, Bushnell, et al., 1993gas phase; switching reaction(Co+)CH4, ΔrS(500 K); M

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

By formula: (Co+ • 2C2H6) + C2H6 = (Co+ • 3C2H6)

Quantity Value Units Method Reference Comment
ΔrH°12.kcal/molSIDTKemper, Bushnell, et al., 1993gas phase; ΔrH<; M

Iron ion (1+) + Ethane = (Iron ion (1+) • Ethane)

By formula: Fe+ + C2H6 = (Fe+ • C2H6)

Quantity Value Units Method Reference Comment
ΔrH°18. ± 3.kcal/molMKERCarpenter, van Koppen, et al., 1995gas phase; M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
15.3 (+1.4,-0.) CIDArmentrout and Kickel, 1994gas phase; guided ion beam CID; M

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

By formula: Ni+ + C2H6 = (Ni+ • C2H6)

Quantity Value Units Method Reference Comment
ΔrH°29. ± 3.kcal/molMKERCarpenter, van Koppen, et al., 1995gas phase; M

IR Spectrum

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Data compiled by: Coblentz Society, Inc.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Mass spectrum (electron ionization)

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

Data compiled 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.
NIST MS number 23

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.

Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Site Links, NIST Free Links, NIST Subscription Links, 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: Takehiko Shimanouchi

Symmetry:   D3d     Symmetry Number σ = 6
 Sym.   No   Approximate   Selected Freq.  Infrared   Raman   Comments 
 Species   type of mode   Value   Rating   Value  Phase  Value  Phase
a1g 1 CH3 s-str 2954  B  ia 2953.7 gas
a1g 2 CH3 s-deform 1388  B  ia 1388.4 gas
a1g 3 CC str 995  A  ia 994.8 gas
a1u 4 Torsion 289  B 289 gas  ia
a2u 5 CH3 s-str 2896  B 2895.8 gas  ia
a2u 6 CH3 s-deform 1379  A 1379.2 gas  ia
eg 7 CH3 d-str 2969  A  ia 2968.7 gas
eg 8 CH3 d-deform 1468  A  ia 1468.1 gas
eg 9 CH3 rock 1190  E  ia OC
eu 10 CH3 d-str 2985  A 2985.4 gas  ia
eu 11 CH3 d-deform 1469  C 1469 gas  ia FR(ν4+ν12)
eu 12 CH3 rock 822  A 821.6 gas  ia

Source: Shimanouchi, 1972

Notes

iaInactive
FRFermi resonance with an overtone or a combination tone indicated in the parentheses.
OCFrequency estimated from an overtone or a combination tone indicated in the parentheses.
A0~1 cm-1 uncertainty
B1~3 cm-1 uncertainty
C3~6 cm-1 uncertainty
E15~30 cm-1 uncertainty

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, Site Links, NIST Free Links, NIST Subscription Links, Notes

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

Manion, 2002
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Rossini, F.D., Calorimetric determination of the heats of combustion of ethane, propane, normal butane, and normal pentane, J. Res. NBS, 1934, 12, 735-750. [all data]

Gurvich, Veyts, et al., 1989
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Witt, R.K.; Kemp, J.D., The heat capacity of ethane from 15°K to the boiling point. The heat of fusion and the heat of vaporization, J. Am. Chem. Soc., 1937, 59, 273-276. [all data]

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Atake, T.; Chihara, H., Calorimetric study of the phase changes in solid ethane, Chem. Lett., 1976, (7), 683-688. [all data]

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Wiebe, R.; Hubbard, K.H.; Brevoort, M.J., The heat capacity of saturated liquid ethane from the boiling point to the critical temperature and heat fusion of the solid, J. Am. Chem. Soc., 1930, 52, 611-622. [all data]

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Younglove, B.A.; Ely, J.F., Thermophysical Properties of Fluids II. Methane, Ethane, Propane, Isobutane, and Normal Butane, J. Phys. Chem. Ref. Data, 1987, 16, 577. [all data]

Majer and Svoboda, 1985
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Stephenson and Malanowski, 1987
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Carruth and Kobayashi, 1973
Carruth, Grant F.; Kobayashi, Riki, Vapor pressure of normal paraffins ethane through n-decane from their triple points to about 10 mm mercury, J. Chem. Eng. Data, 1973, 18, 2, 115-126, https://doi.org/10.1021/je60057a009 . [all data]

Reid, 1972
Reid, Robert C., Handbook on vapor pressure and heats of vaporization of hydrocarbons and related compounds, R. C. Wilhort and B. J. Zwolinski, Texas A Research Foundation. College Station, Texas(1971). 329 pages.$10.00, AIChE J., 1972, 18, 6, 1278-1278, https://doi.org/10.1002/aic.690180637 . [all data]

Loomis and Walters, 1926
Loomis, A.G.; Walters, J.E., THE VAPOR PRESSURE OF ETHANE NEAR THE NORMAL BOILING POINT 1, J. Am. Chem. Soc., 1926, 48, 8, 2051-2055, https://doi.org/10.1021/ja01419a006 . [all data]

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Bondi, 1963
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Kemper, Bushnell, et al., 1993
Kemper, P.R.; Bushnell, J.; Von Koppen, P.; Bowers, M.T., Binding Energies of Co+(H2/CH4/C2H6)1,2,3 Clusters, J. Phys. Chem., 1993, 97, 9, 1810, https://doi.org/10.1021/j100111a016 . [all data]

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Lacher, J.R.; Amador, A.; Park, J.D., Reaction heats of organic compounds. Part 5.-Heats of hydrogenation of dichloromethane, 1,1- and 1,2-dichloroethane and 1,2-dichloropropane, Trans. Faraday Soc., 1967, 63, 1608-1611. [all data]

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Carson, A.S.; Hartley, K.; Skinner, H.A., Thermochemistry of metal alkyls. Part II.?The bond dissociation energies of some Zn?C and Cd?C bonds, and of Et?I., Trans. Faraday Soc., 1949, 45, 1159, https://doi.org/10.1039/tf9494501159 . [all data]

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Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

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Bieri and Asbrink, 1980
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Suzuki and Maeda, 1977, 2
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Shimanouchi, 1972
Shimanouchi, T., Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]

Notes

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