DL-Leucine

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Condensed phase thermochemistry data

Go To: Top, Reaction thermochemistry data, Ion clustering data, 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
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Δfsolid-153.13 ± 0.21kcal/molCcbHuffman, Fox, et al., 1937Author's hf298=-154.25 kcal/mol; ALS
Quantity Value Units Method Reference Comment
Δcsolid-855.23 ± 0.21kcal/molCcbHuffman, Fox, et al., 1937Author's hf298=-154.25 kcal/mol; ALS
Quantity Value Units Method Reference Comment
solid,1 bar49.50cal/mol*KN/AHuffman and Ellis, 1937Extrapolation below 90 K, 58.20 J/mol*K.; DH

Constant pressure heat capacity of solid

Cp,solid (cal/mol*K) Temperature (K) Reference Comment
46.439296.6Huffman and Ellis, 1937T = 86 to 297 K. Value is unsmoothed experimental datum.; DH

Reaction thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Ion clustering data, 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 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

Sodium ion (1+) + DL-Leucine = (Sodium ion (1+) • DL-Leucine)

By formula: Na+ + C6H13NO2 = (Na+ • C6H13NO2)

Quantity Value Units Method Reference Comment
Δr41.8kcal/molCIDCKish, Ohanessian, et al., 2003Anchor alanine=39.89

Ion clustering data

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, 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 by: Robert C. Dunbar

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

Sodium ion (1+) + DL-Leucine = (Sodium ion (1+) • DL-Leucine)

By formula: Na+ + C6H13NO2 = (Na+ • C6H13NO2)

Quantity Value Units Method Reference Comment
Δr41.8kcal/molCIDCKish, Ohanessian, et al., 2003Anchor alanine=39.89

Mass spectrum (electron ionization)

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Ion clustering 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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Mass 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 Chemical Concepts
NIST MS number 221048

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References

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Ion clustering 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.

Huffman, Fox, et al., 1937
Huffman, H.M.; Fox, S.W.; Ellis, E.L., Thermal data. VII. The heats of combustion of seven amino acids, J. Am. Chem. Soc., 1937, 59, 2144-21. [all data]

Huffman and Ellis, 1937
Huffman, H.M.; Ellis, E.L., Thermal data. VIII. The heat capacities, entropies and free energies of some amino acids, J. Am. Chem. Soc., 1937, 59, 2150-2152. [all data]

Kish, Ohanessian, et al., 2003
Kish, M.M.; Ohanessian, G.; Wesdemiotis, C., The Na+ affinities of a-amino acids: side-chain substituent effects, Int. J. Mass Spectrom., 2003, 227, 3, 509, https://doi.org/10.1016/S1387-3806(03)00082-4 . [all data]


Notes

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, Mass spectrum (electron ionization), References