N-Glycylglycine
- Formula: C4H8N2O3
- Molecular weight: 132.1179
- IUPAC Standard InChI: InChI=1S/C4H8N2O3/c5-1-3(7)6-2-4(8)9/h1-2,5H2,(H,6,7)(H,8,9)
- IUPAC Standard InChIKey: YMAWOPBAYDPSLA-UHFFFAOYSA-N
- CAS Registry Number: 556-50-3
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Glycine, N-glycyl-; Diglycine; Glycylglycine; Glycine dipeptide
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Condensed phase thermochemistry 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°solid | -747.7 ± 1.3 | kJ/mol | Ccb | Diaz, Domalski, et al., 1992 | ALS |
| ΔfH°solid | -747.68 ± 0.63 | kJ/mol | Ccb | Huffman, 1942 | Heat of combustion corrected for pressure; ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -1969.7 ± 1.3 | kJ/mol | Ccb | Diaz, Domalski, et al., 1992 | ALS |
| ΔcH°solid | -1969.7 ± 0.54 | kJ/mol | Ccb | Huffman, 1942 | Heat of combustion corrected for pressure; ALS |
| ΔcH°solid | -1978. | kJ/mol | Ccb | Fischer and Wrede, 1904 | Heat of combustion corrected for pressure; ALS |
| ΔcH°solid | -1974.0 | kJ/mol | Ccb | Lemoult, 1904 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 180.3 | J/mol*K | N/A | Hutchens, Cole, et al., 1969 | DH |
| S°solid,1 bar | 190.0 | J/mol*K | N/A | Huffman, 1941 | Extrapolation below 90 K, 56.90 J/mol*K.; DH |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 149. | 298. | Badelin, Kulikov, et al., 1990 | T = 298, 313, 333, 348 K.; DH |
| 149.0 | 298. | Kulikov, Kozlov, et al., 1989 | T = 298 to 348 K.; DH |
| 163.97 | 298.15 | Hutchens, Cole, et al., 1969 | T = 11 to 305 K.; DH |
| 161.80 | 293.9 | Huffman, 1941 | T = 87 to 294 K. Value is unsmoothed experimental datum.; DH |
References
Go To: Top, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Diaz, Domalski, et al., 1992
Diaz, E.L.; Domalski, E.S.; Colbert, J.C.,
Enthalpies of combustion of glycylglycine and DL-alanyl-DL-alamine,
J. Chem. Thermodyn., 1992, 24, 1311-1318. [all data]
Huffman, 1942
Huffman, H.M.,
Thermal data. XV. The heats of combustion and free energies of some compounds containing the peptide bond,
J. Phys. Chem., 1942, 46, 885-891. [all data]
Fischer and Wrede, 1904
Fischer, E.; Wrede, F.,
Uber die Verbrennungswarme einiger organischer Verbindungen,
Sitzungsber. Dtsch. Akad. Wiss. Berlin Kl. Math. Phys. Tech., 1904, 687-715. [all data]
Lemoult, 1904
Lemoult, M.P.,
Remarques sur une serie recenie de determinations calorimetriques,
Compt. Rend., 1904, 663-635. [all data]
Hutchens, Cole, et al., 1969
Hutchens, J.O.; Cole, A.G.; Stout, J.W.,
Heat capacities from 11 to 305°K, entropies and free energy of formation of glycylglycine,
J. Biol. Chem., 1969, 244, 33-35. [all data]
Huffman, 1941
Huffman, H.M.,
Thermal data. XIV. The heat capacities and entropies of some compounds having the peptide bond,
J. Am. Chem. Soc., 1941, 63, 688-689. [all data]
Badelin, Kulikov, et al., 1990
Badelin, V.G.; Kulikov, O.V.; Batagin, V.S.; Udzig, E.; Zielenkiewicz, A.; Zielenkiewicz, W.; Krestov, G.A.,
Physico-chemical properties of peptides and their solutions,
Thermochim. Acta, 1990, 169, 81-93. [all data]
Kulikov, Kozlov, et al., 1989
Kulikov, O.V.; Kozlov, V.A.; Malenkina, L.I.; Badelin, V.G.,
Heat capacities of amino acids and peptides and excess characteristics ot their aqueous solutions, Sbornik Nauch. Trud., Termodin. Rast. neelect., Ivanovo,
Inst. nevod. rast., 1989, Akad. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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