3,4,5-Trimethylpyrazole

• Formula: C₆H₁₀N₂
• Molecular weight: 110.1570
• IUPAC Standard InChI: InChI=1S/C6H10N2/c1-4-5(2)7-8-6(4)3/h1-3H3,(H,7,8) Copy

  
• IUPAC Standard InChIKey: HUVAAOZUPLEYBH-UHFFFAOYSA-N Copy
• CAS Registry Number: 5519-42-6
• Chemical structure:
  This structure is also available as a 2d Mol file
• Other names: 1H-Pyrazole, 3,4,5-trimethyl-; 3,4,5-Trimethyl-1H-pyrazole
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• Information on this page:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Mass spectrum (electron ionization)
  • Gas Chromatography
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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: John E. Bartmess

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

C₆H₉N₂^- +  =

By formula: C₆H₉N₂^- + H⁺ = C₆H₁₀N₂

Gas phase ion energetics 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess

De-protonation reactions

C₆H₉N₂^- +  =

By formula: C₆H₉N₂^- + H⁺ = C₆H₁₀N₂

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.

Taft, 1991
Taft, R.W., , personal communication, Aug, 1991. [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References

• Symbols used in this document:
  

  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions

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