2-Pyrrolidinone

• Formula: C₄H₇NO
• Molecular weight: 85.1045
• IUPAC Standard InChI: InChI=1S/C4H7NO/c6-4-2-1-3-5-4/h1-3H2,(H,5,6) Copy

  
• IUPAC Standard InChIKey: HNJBEVLQSNELDL-UHFFFAOYSA-N Copy
• CAS Registry Number: 616-45-5
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Other names: γ-Aminobutyrolactam; α-Pyrrolidinone; α-Pyrrolidone; γ-Aminobutyric lactam; γ-Butyrolactam; Butanoic acid, 4-amino-, lactam; Butyrolactam; Pyrrolidone; 2-Oxopyrrolidine; 2-Pyrol; 2-Pyrrolidone; 4-Aminobutyric acid lactam; Pyrrolidon; LAM; γ-Aminobutyric acid lactam; 2-Tetrahydropyrrolone; Azacyclopentan-2-one; Pyrrolidone-2; Soluphor P; NSC 4593; NSC 8413; Butanoic acid, 4-amino-; 2-Pyrol4-aminobutyric acid lactam; a-Pyrrolidinone; a-Pyrrolidone; g-Aminobutyric acid lactam; g-Aminobutyric lactam; g-Aminobutyrolactam; g-Butyrolactam; Pyrrolidone2-pyrrolidone; Pyrrolidin-2-one
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• Information on this page:
  • Condensed phase thermochemistry data
  • IR Spectrum
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Phase change data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • Gas Chromatography
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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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of liquid

Constant pressure heat capacity of solid

IR Spectrum

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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

Gas Phase Spectrum

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Additional Data

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.

Steele, Chirico, et al., 1989
Steele, W.V.; Chirico, R.D.; Nguyen, A.; Hossenlopp, I.A.; Smith, N.K., Determination of some pure compound ideal-gas enthalpies of formation, AIChE Symp. Ser., 1989, 85, 140-162. [all data]

Strepikeev, Skuratov, et al., 1955
Strepikeev, A.A.; Skuratov, S.M.; Kachinskaya, O.N.; Muromova, R.S.; Brikina, E.P.; Shtekhter, S.M., About the tension of cycle in lactames, Dokl. Akad. Nauk SSSR, 1955, 102, 105-108. [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]

Kolesov, Paukov, et al., 1962
Kolesov, V.P.; Paukov, I.E.; Skuratov, S.M., Free energy change in the polymerization of lactams under standard conditions [low temperature heat capacities of lactams and potassium], Zhur. Fiz. Khim., 1962, 36, 770-779. [all data]

Kolesov, Paukov, et al., 1959
Kolesov, V.P.; Paukov, I.E.; Skuratov, S.M.; Seregin, E.A., Standard entropies of certain lactams, Dokl. Akad. Nauk., 1959, SSSR 128, 130-132. [all data]

Notes

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• Symbols used in this document:
  

  Cp,liquid	Constant pressure heat capacity of liquid
  Cp,solid	Constant pressure heat capacity of solid
  S°liquid	Entropy of liquid at standard conditions
  S°solid,1 bar	Entropy of solid at standard conditions (1 bar)
  ΔcH°liquid	Enthalpy of combustion of liquid at standard conditions
  ΔfH°liquid	Enthalpy of formation of liquid at standard conditions

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