Pentane
- Formula: C5H12
- Molecular weight: 72.1488
- IUPAC Standard InChIKey: OFBQJSOFQDEBGM-UHFFFAOYSA-N
- CAS Registry Number: 109-66-0
- 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: n-Pentane; Skellysolve A; n-C5H12; Pentan; Pentanen; Pentani; Amyl hydride; NSC 72415
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Reaction thermochemistry data
Go To: Top, 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:
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
By formula: C5H10 + H2 = C5H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -30.27 ± 0.58 | kcal/mol | Chyd | Molnar, Rachford, et al., 1984 | liquid phase; solvent: Dioxane; ALS |
ΔrH° | -29.87 ± 0.42 | kcal/mol | Chyd | Molnar, Rachford, et al., 1984 | liquid phase; solvent: Hexane; ALS |
ΔrH° | -29.30 ± 0.57 | kcal/mol | Chyd | Rogers and Skanupong, 1974 | liquid phase; solvent: Hexane; ALS |
ΔrH° | -28.5 ± 0.3 | kcal/mol | Chyd | Rogers and McLafferty, 1971 | liquid phase; solvent: Hydrocarbon; ALS |
C10H12CrO5 (solution) = (solution) + C5CrO5 (solution)
By formula: C10H12CrO5 (solution) = C5H12 (solution) + C5CrO5 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.91 | kcal/mol | N/A | Morse, Parker, et al., 1989 | solvent: Pentane; The reaction enthalpy was derived by using the LPHP value for the enthalpy of cleavage of Cr-CO bond in Cr(CO)6, 36.81 kcal/mol Lewis, Golden, et al., 1984, toghether with a PAC value for the reaction Cr(CO)6(solution) + n-C5H12(solution) = Cr(CO)5(n-C5H12)(solution) + CO(solution), 27.89 kcal/mol Morse, Parker, et al., 1989; MS |
(solution) + (solution) = C10H12CrO5 (solution) + (solution)
By formula: C5H12 (solution) + C6CrO6 (solution) = C10H12CrO5 (solution) + CO (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 27.9 ± 2.5 | kcal/mol | PAC | Morse, Parker, et al., 1989 | solvent: Pentane; The reaction enthalpy relies on 0.67 for the quantum yield of CO dissociation; MS |
By formula: 3H2 + C5H6 = C5H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -96.8 ± 0.1 | kcal/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase; ALS |
ΔrH° | -95.6 ± 1.1 | kcal/mol | Chyd | Skinner and Snelson, 1959 | liquid phase; solvent: Acetic acid; ALS |
By formula: 3H2 + C5H6 = C5H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -97.0 ± 0.3 | kcal/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase; ALS |
ΔrH° | -96.0 ± 0.4 | kcal/mol | Chyd | Skinner and Snelson, 1959 | liquid phase; solvent: Acetic acid; ALS |
By formula: 2H2 + C5H8 = C5H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -60.22 ± 0.15 | kcal/mol | Chyd | Kistiakowsky, Ruhoff, et al., 1936 | gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -60.79 ± 0.15 kcal/mol; At 355 °K; ALS |
(solution) + C5H11BrMg (solution) = C6H5BrMgO (solution) + (solution)
By formula: C6H6O (solution) + C5H11BrMg (solution) = C6H5BrMgO (solution) + C5H12 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -48.4 ± 1.0 | kcal/mol | RSC | Holm, 1983 | solvent: Diethyl ether; MS |
C5H11BrMg (solution) + (g) = (solution) + Br2Mg (solution)
By formula: C5H11BrMg (solution) + HBr (g) = C5H12 (solution) + Br2Mg (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -73.21 ± 0.53 | kcal/mol | RSC | Holm, 1981 | solvent: Diethyl ether; MS |
(solution) + C5H11BrMg (solution) = C2H5BrMgO (solution) + (solution)
By formula: C2H6O (solution) + C5H11BrMg (solution) = C2H5BrMgO (solution) + C5H12 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -47.7 ± 1.0 | kcal/mol | RSC | Holm, 1983 | solvent: Diethyl ether; MS |
C5H11BrMg (solution) + (solution) = CH4BrMgN (solution) + (solution)
By formula: C5H11BrMg (solution) + CH5N (solution) = CH4BrMgN (solution) + C5H12 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -31.19 ± 0.60 | kcal/mol | RSC | Holm, 1983 | solvent: Diethyl ether; MS |
By formula: 2H2 + C5H8 = C5H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -65.5 ± 0.2 | kcal/mol | Chyd | Roth, Kirmse, et al., 1982 | liquid phase; solvent: Isooctane; ALS |
C5O5W (g) + (g) = C10H12O5W (g)
By formula: C5O5W (g) + C5H12 (g) = C10H12O5W (g)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -10.6 ± 3.0 | kcal/mol | EqG | Brown, Ishikawa, et al., 1990 | Temperature range: ca. 300-350 K; MS |
C5H11BrMg (solution) + (solution) = (solution) + CH3BrMg (solution)
By formula: C5H11BrMg (solution) + CH4 (solution) = C5H12 (solution) + CH3BrMg (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -3.6 ± 1.0 | kcal/mol | RSC | Holm, 1983 | solvent: Diethyl ether; MS |
(solution) + C5H11BrMg (solution) = C3HBrMgN2 (solution) + (solution)
By formula: C3H2N2 (solution) + C5H11BrMg (solution) = C3HBrMgN2 (solution) + C5H12 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -48.59 | kcal/mol | RSC | Holm, 1983 | solvent: Diethyl ether; MS |
(solution) + C5H11BrMg (solution) = C12H10BrMgN (solution) + (solution)
By formula: C12H11N (solution) + C5H11BrMg (solution) = C12H10BrMgN (solution) + C5H12 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -28.39 | kcal/mol | RSC | Holm, 1983 | solvent: Diethyl ether; MS |
C5H11BrMg (solution) + (solution) = C2BrF3MgO2 (solution) + (solution)
By formula: C5H11BrMg (solution) + C2HF3O2 (solution) = C2BrF3MgO2 (solution) + C5H12 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -65.39 | kcal/mol | RSC | Holm, 1983 | solvent: Diethyl ether; MS |
C5H11BrMg (solution) + (solution) = C6BrF5MgO (cr) + (solution)
By formula: C5H11BrMg (solution) + C6HF5O (solution) = C6BrF5MgO (cr) + C5H12 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -55.90 | kcal/mol | RSC | Holm, 1983 | solvent: Diethyl ether; MS |
C5H11BrMg (solution) + (solution) = C2H2BrF3MgO (solution) + (solution)
By formula: C5H11BrMg (solution) + C2H3F3O (solution) = C2H2BrF3MgO (solution) + C5H12 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -47.71 | kcal/mol | RSC | Holm, 1983 | solvent: Diethyl ether; MS |
(solution) + C5H11BrMg (solution) = CH3BrMgO (cr) + (solution)
By formula: CH4O (solution) + C5H11BrMg (solution) = CH3BrMgO (cr) + C5H12 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -52.51 | kcal/mol | RSC | Holm, 1983 | solvent: Diethyl ether; MS |
By formula: 2H2 + C5H8 = C5H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -54.11 ± 0.15 | kcal/mol | Chyd | Dolliver, Gresham, et al., 1937 | gas phase; At 355 °K; ALS |
By formula: C5H12 = C5H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -1.861 | kcal/mol | Eqk | Pines, Kvetinskas, et al., 1945 | gas phase; Heat of isomerization; ALS |
By formula: H2 + C5H10 = C5H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -28.1 ± 0.2 | kcal/mol | Chyd | Egger and Benson, 1966 | gas phase; ALS |
By formula: H2 + C5H10 = C5H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -27.2 ± 0.2 | kcal/mol | Chyd | Egger and Benson, 1966 | gas phase; ALS |
Mass spectrum (electron ionization)
Go To: Top, Reaction thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
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 | NIST Mass Spectrometry Data Center, 1998. |
NIST MS number | 291244 |
References
Go To: Top, Reaction thermochemistry data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Molnar, Rachford, et al., 1984
Molnar, A.; Rachford, R.; Smith, G.V.; Liu, R.,
Heats of hydrogenation by a simple and rapid flow calorimetric method,
Appl. Catal., 1984, 9, 219-223. [all data]
Rogers and Skanupong, 1974
Rogers, D.W.; Skanupong, S.,
Heats of hydrogenation of sixteen terminal monoolefins. The alternating effect,
J. Phys. Chem., 1974, 78, 2569-2572. [all data]
Rogers and McLafferty, 1971
Rogers, D.W.; McLafferty, F.J.,
A new hydrogen calorimeter. Heats of hydrogenation of allyl and vinyl unsaturation adjacent to a ring,
Tetrahedron, 1971, 27, 3765-3775. [all data]
Morse, Parker, et al., 1989
Morse, J.M., Jr.; Parker, G.H.; Burkey, T.J.,
Organometallics, 1989, 8, 2471. [all data]
Lewis, Golden, et al., 1984
Lewis, K.E.; Golden, D.M.; Smith, G.P.,
Organometallic bond dissociation energies: Laser pyrolysis of Fe(CO)5, Cr(CO)6, Mo(CO)6, and W(CO)6,
J. Am. Chem. Soc., 1984, 106, 3905. [all data]
Roth, Adamczak, et al., 1991
Roth, W.R.; Adamczak, O.; Breuckmann, R.; Lennartz, H.-W.; Boese, R.,
Die Berechnung von Resonanzenergien; das MM2ERW-Kraftfeld,
Chem. Ber., 1991, 124, 2499-2521. [all data]
Skinner and Snelson, 1959
Skinner, H.A.; Snelson, A.,
Heats of hydrogenation Part 3.,
Trans. Faraday Soc., 1959, 55, 405-407. [all data]
Kistiakowsky, Ruhoff, et al., 1936
Kistiakowsky, G.B.; Ruhoff, J.R.; Smith, H.A.; Vaughan, W.E.,
Heats of organic reactions. IV. Hydrogenation of some dienes and of benzene,
J. Am. Chem. Soc., 1936, 58, 146-153. [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]
Holm, 1983
Holm, T.,
Acta Chem. Scand. B, 1983, 37, 797. [all data]
Holm, 1981
Holm, T.,
J. Chem. Soc., Perkin Trans. II, 1981, 464.. [all data]
Roth, Kirmse, et al., 1982
Roth, W.R.; Kirmse, W.; Hoffmann, W.; Lennartz, H.W.,
Heats of hydrogenation. III. Effect of fluoro substituents on the thermal rearrangement of cyclopropane systems,
Chem. Ber., 1982, 115, 2508-2515. [all data]
Brown, Ishikawa, et al., 1990
Brown, C.E.; Ishikawa, Y.; Hackett, P.A.; Rayner, D.M.,
J. Am. Chem. Soc., 1990, 112, 2530. [all data]
Dolliver, Gresham, et al., 1937
Dolliver, M.a.; Gresham, T.L.; Kistiakowsky, G.B.; Vaughan, W.E.,
Heats of organic reactions. V. Heats of hydrogenation of various hydrocarbons,
J. Am. Chem. Soc., 1937, 59, 831-841. [all data]
Pines, Kvetinskas, et al., 1945
Pines, H.; Kvetinskas, B.; Kassel, L.S.; Ipatieff, V.N.,
Determination of equilibrium constants for butanes and pentanes,
J. Am. Chem. Soc., 1945, 67, 631-637. [all data]
Egger and Benson, 1966
Egger, K.W.; Benson, S.W.,
Nitric oxide and iodine catalyzed isomerization of olefins. VI. Thermodynamic data from equilibrium studies of the geometrical and positional isomerization of n-pentenes,
J. Am. Chem. Soc., 1966, 88, 236-240. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Mass spectrum (electron ionization), References
- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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