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
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Ion clustering data
Go To: Top, 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
B - John E. Bartmess
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
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 |
+
= 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 |
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: 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: 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: 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: 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: 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: 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: 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 |
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: 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: 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: 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 |
References
Go To: Top, Ion clustering data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
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]
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]
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]
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]
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]
Notes
Go To: Top, Ion clustering data, References
- Symbols used in this document:
T Temperature ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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