Butane, 2-chloro-

• Formula: C₄H₉Cl
• Molecular weight: 92.567
• IUPAC Standard InChI: InChI=1S/C4H9Cl/c1-3-4(2)5/h4H,3H2,1-2H3 Copy

  
• IUPAC Standard InChIKey: BSPCSKHALVHRSR-UHFFFAOYSA-N Copy
• CAS Registry Number: 78-86-4
• 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.
• Species with the same structure:
  • Sec-C4H9Cl
• Stereoisomers:
  • (R)-(-)-2-chlorobutane
• Other names: sec-Butyl Chloride; 1-Methylpropyl chloride; 2-Chlorobutane; sec-C4H9Cl; UN 1127
• Information on this page:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Phase change data
  • Henry's Law data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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: C₄H₉Cl = C₄H₈ + HCl

=  + 

By formula: C₄H₉Cl = C₄H₈ + HCl

=  + 

By formula: C₄H₉Cl = C₄H₈ + HCl

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:
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

Appearance energy determinations

References

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

He, An, et al., 1992
He, J.; An, X.; Hu, R., Measurements of enthalpies of formation of 2-chlorobutane and 1,2-dichlorobutane in gaseous state, Acta Chim. Sin., 1992, 50, 961-966. [all data]

Levanova and Andreevskii, 1964
Levanova, S.V.; Andreevskii, D.N., The equilibrium of 2-chlorobutane dehydrochlorination, Neftekhimiya, 1964, 4, 329-336. [all data]

Luo and Pacey, 1992
Luo, Y.-R.; Pacey, P.D., Effects of alkyl substitution on ionization energies of alkanes and haloalkanes and on heats of formation of their molecular cations. Part 2. Alkanes and chloro-, bromo- and iodoalkanes, Int. J. Mass Spectrom. Ion Processes, 1992, 112, 63. [all data]

Traeger, 1981
Traeger, J.C., Heat of formation of sec-butyl cation in the gas phase, Org. Mass Spectrom., 1981, 16, 193. [all data]

Baldwin, Maccoll, et al., 1964
Baldwin, M.; Maccoll, A.; Miller, S.I., Appearance potentials of the lower chloroalkanes, J. Am. Chem. Soc., 1964, 86, 4498. [all data]

Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J., Ionization potentials of some molecules, J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]

Kimura, Katsumata, et al., 1981
Kimura, K.; Katsumata, S.; Achiba, Y.; Yamazaki, T.; Iwata, S., Ionization energies, Ab initio assignments, and valence electronic structure for 200 molecules in Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds, Japan Scientific Soc. Press, Tokyo, 1981. [all data]

Maccoll and Mathur, 1980
Maccoll, A.; Mathur, D., Hydrogen chloride elimination from the molecular ions of alkyl chlorides, Org. Mass Spectrom., 1980, 15, 483. [all data]

Baldwin, Maccoll, et al., 1966
Baldwin, M.; Maccoll, A.; Miller, S.I., Ionization and appearance potentials from a study of alkyl chlorides, Advan. Mass Spectrom., 1966, 3, 259. [all data]

Notes

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• Symbols used in this document:
  

  AE	Appearance energy
  IE (evaluated)	Recommended ionization energy
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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