2-Pyridinecarboxylic acid

• Formula: C₆H₅NO₂
• Molecular weight: 123.1094
• IUPAC Standard InChI: InChI=1S/C6H5NO2/c8-6(9)5-3-1-2-4-7-5/h1-4H,(H,8,9) Copy

  
• IUPAC Standard InChIKey: SIOXPEMLGUPBBT-UHFFFAOYSA-N Copy
• CAS Registry Number: 98-98-6
• 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.
• Other names: Picolinic acid; α-Pyridinecarboxylic acid; o-Pyridinecarboxylic acid; 2-Carboxypyridine; 2-Picolinic acid; Pyridinecarboxylic acid-(2); Acide picolique; Pyridine-carboxylique-2; NSC 171; pyridine-2-carboxylic acid
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• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 5.0
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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 as indicated in comments:
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Enthalpy of sublimation

Enthalpy of fusion

Mass spectrum (electron ionization)

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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

Spectrum

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Additional Data

References

Go To: Top, Condensed phase thermochemistry data, Phase change 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.

Gubareva, Bukhtoyarova, et al., 1990
Gubareva, A.I.; Bukhtoyarova, I.A.; Gerasimov, P.A.; Gadzhiev, S.N., Physicochemical properties of α-picolinic acid, J. Appl. Chem. USSR, 1990, 63, 448-451. [all data]

Wood and Jones, 1963
Wood, J.L.; Jones, M.M., Heats of formation and coordinate bond energies of some nickel(II) chelates, J. Phys. Chem., 1963, 67, 1049-1051. [all data]

Sabbah and Ider, 1999
Sabbah, Raphaël; Ider, Safi, Energétique des liaisons inter- et intramoléculaires dans les trois acides carboxypyridiniques (acides picolinique, nicotinique et isonicotinique), Revue canadienne de chimie, 1999, 77, 2, 249-257, https://doi.org/10.1139/cjc-77-2-249 . [all data]

Ribeiro da Silva, 1998
Ribeiro da Silva, M., Enthalpies of combustion of the pyridine N-oxide derivatives: 4-methyl-, 3-cyano-, 4-cyano-, 3-hydroxy-, 2-carboxy-, 4-carboxy-, and 3-methyl-4-nitro, and of the pyridine derivatives: 2-carboxy-, and 4-carboxy-. The dissociation enthalpies of the N-O bonds, The Journal of Chemical Thermodynamics, 1998, 30, 7, 869-878, https://doi.org/10.1006/jcht.1998.0353 . [all data]

Allan, Geddes, et al., 1989
Allan, J.R.; Geddes, W.C.; Hindle, C.S.; Orr, A.E., Thermal analysis studies on pyridine carboxylic acid complexes of zinc(II), Thermochim. Acta, 1989, 153, 249-256. [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References

• Symbols used in this document:
  

  ΔcH°solid	Enthalpy of combustion of solid at standard conditions
  ΔfH°solid	Enthalpy of formation of solid at standard conditions
  ΔfusH	Enthalpy of fusion
  ΔsubH	Enthalpy of sublimation
  ΔsubH°	Enthalpy of sublimation at standard conditions

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