2,5-Piperazinedione

• Formula: C₄H₆N₂O₂
• Molecular weight: 114.1026
• IUPAC Standard InChI: InChI=1S/C4H6N2O2/c7-3-1-5-4(8)2-6-3/h1-2H2,(H,5,8)(H,6,7) Copy

  
• IUPAC Standard InChIKey: BXRNXXXXHLBUKK-UHFFFAOYSA-N Copy
• CAS Registry Number: 106-57-0
• 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: Cyclo(glycylglycyl); Cyclic(glycylglycyl); α,γ-Diacipiperazine; Cyclodiglycine; Cycloglycylglycine; Diglycolyl diamide; Diketopiperazine; Glycine, bimol. cyclic peptide; Glycine, N-glycyl-, cyclic peptide; Glycylglycine lactam; 2,5-Diketopiperazine; 2,5-Dioxopiperazine; Piperazine-2,5-dione; NSC 26345
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• Information on this page:
  • Phase change data
  • Reaction thermochemistry data
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
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Phase change 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: William E. Acree, Jr., James S. Chickos

Enthalpy of sublimation

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: Robert C. Dunbar

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: Na⁺ + C₄H₆N₂O₂ = (Na⁺ • C₄H₆N₂O₂)

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.

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Cerda, Hoyau, et al., 1998
Cerda, B.A.; Hoyau, S.; Ohanessian, G.; Wesdemiotis, C., PAs of Peptides, J. Am. Chem. Soc., 1998, 120, 2437. [all data]

Notes

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• Symbols used in this document:
  

  ΔrH°	Enthalpy of reaction at standard conditions
  ΔsubH	Enthalpy of sublimation

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