Acetylene
- Formula: C2H2
- Molecular weight: 26.0373
- IUPAC Standard InChIKey: HSFWRNGVRCDJHI-UHFFFAOYSA-N
- CAS Registry Number: 74-86-2
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Ethyne; Ethine; Narcylen; C2H2; Acetylen; UN 1001; Vinylene
- Permanent link for this species. Use this link for bookmarking this species for future reference.
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Gas phase thermochemistry data
Go To: Top, Reaction thermochemistry data, Henry's Law data, Vibrational and/or electronic energy levels, 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:
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 | 54.190 | kcal/mol | Review | Chase, 1998 | Data last reviewed in March, 1961 |
ΔfH°gas | 54.3 ± 0.2 | kcal/mol | Review | Manion, 2002 | adopted recommendation of Gurvich, Veyts, et al., 1991; DRB |
ΔfH°gas | 54.19 ± 0.19 | kcal/mol | Ccb | Wagman, Kilpatrick, et al., 1945 | Unpublished work of E. J. Prosen; ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°gas,1 bar | 48.023 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1961 |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
7.015 | 100. | Gurvich, Veyts, et al., 1989 | p=1 bar.; GT |
8.501 | 200. | ||
10.53 | 298.15 | ||
10.56 | 300. | ||
12.04 | 400. | ||
13.09 | 500. | ||
13.89 | 600. | ||
14.57 | 700. | ||
15.18 | 800. | ||
15.73 | 900. | ||
16.24 | 1000. | ||
16.71 | 1100. | ||
17.13 | 1200. | ||
17.52 | 1300. | ||
17.87 | 1400. | ||
18.18 | 1500. | ||
18.47 | 1600. | ||
18.73 | 1700. | ||
18.96 | 1800. | ||
19.17 | 1900. | ||
19.36 | 2000. | ||
19.54 | 2100. | ||
19.70 | 2200. | ||
19.84 | 2300. | ||
19.98 | 2400. | ||
20.11 | 2500. | ||
20.22 | 2600. | ||
20.33 | 2700. | ||
20.43 | 2800. | ||
20.53 | 2900. | ||
20.62 | 3000. |
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. to 1100. | 1100. to 6000. |
---|---|---|
A | 9.724420 | 16.12630 |
B | 9.735371 | 2.808581 |
C | -3.866731 | -0.483143 |
D | 0.877089 | 0.032551 |
E | -0.157364 | -2.343790 |
F | 50.36011 | 44.32481 |
G | 56.16759 | 60.59601 |
H | 54.19011 | 54.19011 |
Reference | Chase, 1998 | Chase, 1998 |
Comment | Data last reviewed in March, 1961 | Data last reviewed in March, 1961 |
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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
MS - José A. Martinho Simões
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
C2H- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 379. ± 5. | kcal/mol | AVG | N/A | Average of 8 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 370. ± 5. | kcal/mol | AVG | N/A | Average of 7 values; Individual data points |
By formula: COS+ + C2H2 = (COS+ • C2H2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 27.7 | kcal/mol | PD/KERD | Graul S.T. and Bowers, 1991 | gas phase; ΔrH>=; M |
ΔrH° | 34. | kcal/mol | PDiss | Orlando, Friedman, et al., 1990 | gas phase; M |
ΔrH° | 34. | kcal/mol | PDiss | Orlando, Friedman, et al., 1990 | gas phase; M |
ΔrH° | 33.7 ± 5.3 | kcal/mol | PDiss | Orlando, Friedman, et al., 1990 | gas phase; ΔrH<; M |
By formula: Co+ + C2H2 = (Co+ • C2H2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.0 ± 1.9 | kcal/mol | IRMPD | Surya, Ranatunga, et al., 1997 | RCD |
Enthalpy of reaction
ΔrH° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
6.5 (+3.1,-0.) | CID | Armentrout and Kickel, 1994 | gas phase; ΔrH >=, guided ion beam CID; M |
By formula: Ni+ + C2H2 = (Ni+ • C2H2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 44.9 ± 1.9 | kcal/mol | IRMPD | Surya, Ranatunga, et al., 1997 | RCD |
Enthalpy of reaction
ΔrH° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
1.7 (+4.3,-0.) | CID | Armentrout and Kickel, 1994 | gas phase; ΔrH>=, guided ion beam CID; M |
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -74.58 ± 0.15 | kcal/mol | Chyd | Conn, Kistiakowsky, et al., 1939 | gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -75.06 ± 0.66 kcal/mol; At 355 K; ALS |
By formula: C7H8 = C5H6 + C2H2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 28.00 ± 0.50 | kcal/mol | Kin | Walsh and Wells, 1975 | gas phase; Reanalyzed by Pedley, Naylor, et al., 1986, Original value = 28.36 ± 0.32 kcal/mol; ALS |
C2Na2 (cr) + 2 (l) = 2(
• 1418
) (solution) +
(g)
By formula: C2Na2 (cr) + 2H2O (l) = 2(HNaO • 1418H2O) (solution) + C2H2 (g)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -38.67 ± 0.36 | kcal/mol | RSC | Johnson, van Deventer, et al., 1973 | Please also see Pedley and Rylance, 1977.; MS |
C2HCs (cr) + (l) = (
• 1031
) (solution) +
(g)
By formula: C2HCs (cr) + H2O (l) = (HCsO • 1031H2O) (solution) + C2H2 (g)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -12.9 ± 0.2 | kcal/mol | RSC | Ader and Hubbard, 1973 | Please also see Pedley and Rylance, 1977.; MS |
C2HNa (cr) + (l) = (
• 1418
) (solution) +
(g)
By formula: C2HNa (cr) + H2O (l) = (HNaO • 1418H2O) (solution) + C2H2 (g)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -13.0 ± 0.2 | kcal/mol | RSC | Johnson, van Deventer, et al., 1973 | Please also see Pedley and Rylance, 1977.; MS |
By formula: Cu+ + C2H2 = (Cu+ • C2H2)
Enthalpy of reaction
ΔrH° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
2.4 (+2.4,-0.) | CID | Armentrout and Kickel, 1994 | gas phase; ΔrH>=, guided ion beam CID; M |
By formula: 2C2H2 = C4H4
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 55.8 | kcal/mol | Cm | Reppe, Schlichting, et al., 1948 | liquid phase; ALS |
ΔrH° | 49.6 | kcal/mol | Cm | Reppe, Schlichting, et al., 1948 | gas phase; ALS |
By formula: Rh+ + C2H2 = (Rh+ • C2H2)
Enthalpy of reaction
ΔrH° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
30.9 | CID | Chen and Armetrout, 1995 | gas phase; ΔrH>=, guided ion beam CID; M |
By formula: Cr+ + C2H2 = (Cr+ • C2H2)
Enthalpy of reaction
ΔrH° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
44.0 (+4.8,-0.) | CID | Armentrout and Kickel, 1994 | gas phase; guided ion beam CID; M |
By formula: Ti+ + C2H2 = (Ti+ • C2H2)
Enthalpy of reaction
ΔrH° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
60.5 (+4.8,-0.) | CID | Armentrout and Kickel, 1994 | gas phase; guided ion beam CID; M |
By formula: La+ + C2H2 = (La+ • C2H2)
Enthalpy of reaction
ΔrH° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
62.6 (+7.2,-0.) | CID | Armentrout and Kickel, 1994 | gas phase; guided ion beam CID; M |
By formula: Sc+ + C2H2 = (Sc+ • C2H2)
Enthalpy of reaction
ΔrH° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
57.4 (+4.8,-0.) | CID | Armentrout and Kickel, 1994 | gas phase; guided ion beam CID; M |
By formula: V+ + C2H2 = (V+ • C2H2)
Enthalpy of reaction
ΔrH° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
49.0 (+4.8,-0.) | CID | Armentrout and Kickel, 1994 | gas phase; guided ion beam CID; M |
By formula: Y+ + C2H2 = (Y+ • C2H2)
Enthalpy of reaction
ΔrH° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
60.5 (+7.2,-0.) | CID | Armentrout and Kickel, 1994 | gas phase; guided ion beam CID; M |
+
= C2H2Br-
By formula: Br- + C2H2 = C2H2Br-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.60 | kcal/mol | LPES | Wild, Milley, et al., 2000 | gas phase; Given: 8.635±0.009 kcal/mol(0 K); B |
C2Ag2 (cr) + 2( • 12.3
) (solution) =
(aq) + 2
(cr)
By formula: C2Ag2 (cr) + 2(HCl • 12.3H2O) (solution) = C2H2 (aq) + 2AgCl (cr)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -18.6 ± 0.1 | kcal/mol | RSC | Finch, Gardner, et al., 1991 | MS |
(CAS Reg. No. 25012-81-1 • 4294967295) +
= CAS Reg. No. 25012-81-1
By formula: (CAS Reg. No. 25012-81-1 • 4294967295C2H2) + C2H2 = CAS Reg. No. 25012-81-1
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 33.02 ± 0.72 | kcal/mol | N/A | Ervin, Gronert, et al., 1990 | gas phase; B |
By formula: Al+ + C2H2 = (Al+ • C2H2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 13.0 ± 2.0 | kcal/mol | CIDC,EqG | Stockigt, Schwarz, et al., 1996 | Anchored to theory; RCD |
By formula: C2H2Cl2 = C2H2 + Cl2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.1 | kcal/mol | Kin | Laursen and Pimentel, 1989 | gas phase; Photolyses; ALS |
By formula: C2H3Cl = C2H2 + HCl
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 24.06 ± 0.28 | kcal/mol | Cm | Lacher, Gottlieb, et al., 1962 | gas phase; ALS |
By formula: C5H6 + C2H2 = C7H8
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -28.0 ± 0.5 | kcal/mol | Eqk | Walsh and Wells, 1975 | gas phase; ALS |
By formula: C2H2+ + C2H2 = (C2H2+ • C2H2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 22.6 | kcal/mol | PI | Ono and Ng, 1982 | gas phase; M |
By formula: Fe+ + C2H2 = (Fe+ • C2H2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 36.1 ± 1.9 | kcal/mol | IRMPD | Surya, Ranatunga, et al., 1997 | RCD |
By formula: C2H2I2 = C2H2 + I2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 19.9 | kcal/mol | Eqk | Furuyama, Golden, et al., 1968 | gas phase; ALS |
C2H2I2 = +
By formula: C2H2I2 = C2H2 + I2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 19.9 | kcal/mol | Eqk | Furuyama, Golden, et al., 1968 | gas phase; ALS |
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 |
---|---|---|---|---|
0.039 | Q | N/A | missing citation give several references for the Henry's law constants but don't assign them to specific species. | |
0.041 | 1800. | L | N/A | |
0.042 | V | N/A |
Vibrational and/or electronic energy levels
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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: Takehiko Shimanouchi
Symmetry: D∞h Symmetry Number σ = 2
Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
---|---|---|---|---|---|---|---|---|---|---|
Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
σg+ | 1 | CH str | 3374 | C | ia | 3373.7 S | gas | |||
σg+ | 2 | CC str | 1974 | C | ia | 1973.8 VS | gas | |||
σu+ | 3 | CH str | 3289 | B | 3294.9 S | gas | ia | FR(ν2+ν4+ν5) | ||
σu+ | 3 | CH str | 3289 | B | 3281.9 VS | gas | ia | FR(ν2+ν4+ν5) | ||
πg | 4 | CH bend | 612 | C | ia | 611.8 VW | gas | |||
πu | 5 | CH bend | 730 | A | 730.3 VS | gas | ia | |||
Source: Shimanouchi, 1972
Notes
VS | Very strong |
S | Strong |
VW | Very weak |
ia | Inactive |
FR | Fermi resonance with an overtone or a combination tone indicated in the parentheses. |
A | 0~1 cm-1 uncertainty |
B | 1~3 cm-1 uncertainty |
C | 3~6 cm-1 uncertainty |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Henry's Law data, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Manion, 2002
Manion, J.A.,
Evaluated Enthalpies of Formation of the Stable Closed Shell C1 and C2 Chlorinated Hydrocarbons,
J. Phys. Chem. Ref. Data, 2002, 31, 1, 123-172, https://doi.org/10.1063/1.1420703
. [all data]
Gurvich, Veyts, et al., 1991
Thermodynamic Properties of Individual Substances, 4th edition, Volume 2, Gurvich, L.V.; Veyts, I.V.; Alcock, C.B.;, ed(s)., Hemisphere, New York, 1991. [all data]
Wagman, Kilpatrick, et al., 1945
Wagman, D.D.; Kilpatrick, J.E.; Pitzer, K.S.; Rossini, F.D.,
Heats, equilibrium constants, and free energies of formation of the acetylene hydrocarbons through the pentynes, to 1,500° K,
J. Res. NBS, 1945, 35, 467-496. [all data]
Gurvich, Veyts, et al., 1989
Gurvich, L.V.; Veyts, I.V.; Alcock, C.B.,
Thermodynamic Properties of Individual Substances, 4th ed.; Vols. 1 and 2, Hemisphere, New York, 1989. [all data]
Graul S.T. and Bowers, 1991
Graul S.T.; Bowers, M.T.,
Dynamics of Metastable Dissociation and Photodissociation of the Gas Phase Cluster Ion (OCS.C2H2)+,
J. Phys. Chem., 1991, 95, 21, 8328, https://doi.org/10.1021/j100174a055
. [all data]
Orlando, Friedman, et al., 1990
Orlando, T.M.; Friedman, A.; Maier, J.P.,
Photodissociation Spectroscopy of the [OCS C2H2]+ Cluster,
J. Chem. Phys., 1990, 92, 12, 7365, https://doi.org/10.1063/1.458222
. [all data]
Surya, Ranatunga, et al., 1997
Surya, P.I.; Ranatunga, D.R.A.; Freiser, B.S.,
Infrared Multiphoton Dissociation of MC4H6+ [M=Fe, Co or Ni: C4H6=1,3-butadiene or (C2H2)(C2H4),
J. Am. Chem. Soc., 1997, 119, 14, 3351, https://doi.org/10.1021/ja963200c
. [all data]
Armentrout and Kickel, 1994
Armentrout, P.B.; Kickel, B.L.,
Gas Phase Thermochemistry of Transition Metal Ligand Systems: Reassessment of Values and Periodic Trends, in Organometallic Ion Chemistry, B. S. Freiser, ed, 1994. [all data]
Conn, Kistiakowsky, et al., 1939
Conn, J.B.; Kistiakowsky, G.B.; Smith, E.A.,
Heats of organic reactions. VIII. Some further hydrogenations, including those of some acetylenes,
J. Am. Chem. Soc., 1939, 61, 1868-1876. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Walsh and Wells, 1975
Walsh, R.; Wells, J.M.,
The enthalpy of formation of bicyclo[2,2,1]hepta-2,5-diene. Thermodynamic functions of bicyclo[2,2,1]heptane and bicyclo[2,2,1]hepta-2,5-diene,
J. Chem. Thermodyn., 1975, 7, 149-154. [all data]
Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P.,
Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]
Johnson, van Deventer, et al., 1973
Johnson, G.K.; van Deventer, E.H.; Ackerman, J.P.; Hubbard, W.N.; Osborne, D.W.; Flotow, H.L.,
J. Chem. Thermodyn., 1973, 5, 57. [all data]
Pedley and Rylance, 1977
Pedley, J.B.; Rylance, J.,
Computer Analysed Thermochemical Data: Organic and Organometallic Compounds, University of Sussex, Brigton, 1977. [all data]
Ader and Hubbard, 1973
Ader, M.; Hubbard, W.N.,
J. Chem. Thermodyn., 1973, 5, 607. [all data]
Reppe, Schlichting, et al., 1948
Reppe, W.; Schlichting, O.; Klager, K.; Toepel, T.,
Cyclisierende Polymerisation von Acetylen I Uber Cyclooctatetraen,
Justus Liebigs Ann. Chem., 1948, 1-93. [all data]
Chen and Armetrout, 1995
Chen, Y.M.; Armetrout, P.B.,
Activation of C2H6, C3H8, and c-C3H6 by Gas-Phase Rh+ and the Thermochemistry of Rh-Ligand Complexes,
J. Am. Chem. Soc., 1995, 117, 36, 9291, https://doi.org/10.1021/ja00141a022
. [all data]
Wild, Milley, et al., 2000
Wild, D.A.; Milley, P.J.; Loh, Z.M.; Wolynec, P.P.; Weiser, P.S.; Bieske, E.J.,
Structural and Energetic Properties of the Br--C2H2 Anion Complex from Rotationally Resolved Mid-infrared Spectra And ab initio Calculations,
J. Chem. Phys., 2000, 113, 3, 1075, https://doi.org/10.1063/1.481919
. [all data]
Finch, Gardner, et al., 1991
Finch, A.; Gardner, P.J.; Head, A.J.; Majdi, H.S.,
Thermochim. Acta, 1991, 180, 325. [all data]
Ervin, Gronert, et al., 1990
Ervin, K.M.; Gronert, S.; Barlow, S.E.; Gilles, M.K.; Harrison, A.G.; Bierbaum, V.M.; DePuy, C.H.; Lin, W.C.,
Bonds Strengths of Ethylene and Acetylene,
J. Am. Chem. Soc., 1990, 112, 15, 5750, https://doi.org/10.1021/ja00171a013
. [all data]
Stockigt, Schwarz, et al., 1996
Stockigt, D.; Schwarz, J.; Schwarz, H.,
Theoretical and Experimental Studies on the Bond Dissociation Energies of Al(methane)+, Al(acetylene)+, Al(ethene)+, and Al(ethane)+,
J. Phys. Chem., 1996, 100, 21, 8786, https://doi.org/10.1021/jp960060k
. [all data]
Laursen and Pimentel, 1989
Laursen, S.L.; Pimentel, G.C.,
Matrix-induced intersystem crossing in the photochemistry of the 1,2-dichloroethenes,
J. Phys. Chem., 1989, 93, 2328-2333. [all data]
Lacher, Gottlieb, et al., 1962
Lacher, J.R.; Gottlieb, H.B.; Park, J.D.,
Reaction heats of organic compounds. Part 2.-Heat of addition of hydrogen chloride to acetylene,
Trans. Faraday Soc., 1962, 58, 2348-2351. [all data]
Ono and Ng, 1982
Ono, Y.; Ng, C.Y.,
A Study of the Unimolecular Decomposition of the (C2H2)2+ Complex,
J. Chem. Phys., 1982, 77, 6, 2947, https://doi.org/10.1063/1.444216
. [all data]
Furuyama, Golden, et al., 1968
Furuyama, S.; Golden, D.M.; Benson, S.W.,
The thermochemistry of the gas-phase equilibria trans-1,2-diiodoethylene = acetylene + I2 and trans-1,2-diiodoethylene = cis-1,2-diiodoethylene,
J. Phys. Chem., 1968, 72, 3204-3208. [all data]
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Henry's Law data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas S°gas,1 bar Entropy of gas at standard conditions (1 bar) T Temperature d(ln(kH))/d(1/T) Temperature dependence parameter for Henry's Law constant k°H Henry's Law constant at 298.15K ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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