pyrrolide anion

• Formula: C₄H₄N^-
• Molecular weight: 66.0818
• IUPAC Standard InChI: InChI=1S/C4H4N/c1-2-4-5-3-1/h1-4H/q-1 Copy

  
• IUPAC Standard InChIKey: KFFMWJLUQMFKOH-UHFFFAOYSA-N Copy
• CAS Registry Number: 23303-09-5
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Information on this page:
  • Gas phase ion energetics data
  • Ion clustering data
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data
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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 compiled by: John E. Bartmess

Electron affinity of neutral species

Protonation reactions

 +  =

By formula: C₄H₄N^- + H⁺ = C₄H₅N

Ion clustering data

Go To: Top, Gas phase ion energetics 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 as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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

 +  = ( • )

By formula: C₄H₄N^- + CH₄O = (C₄H₄N^- • CH₄O)

 +  = ( • )

By formula: C₄H₄N^- + C₂H₃N = (C₄H₄N^- • C₂H₃N)

 +  = ( • )

By formula: C₄H₄N^- + C₂H₅NO = (C₄H₄N^- • C₂H₅NO)

 +  = ( • )

By formula: C₄H₄N^- + C₃H₆O = (C₄H₄N^- • C₃H₆O)

( • ) +  = ( • 2)

By formula: (C₄H₄N^- • C₃H₆O) + C₃H₆O = (C₄H₄N^- • 2C₃H₆O)

 +  = ( • )

By formula: C₄H₄N^- + C₃H₇NO = (C₄H₄N^- • C₃H₇NO)

Free energy of reaction

 +  = ( • )

By formula: C₄H₄N^- + C₄H₅N = (C₄H₄N^- • C₄H₅N)

( • ) +  = ( • 2)

By formula: (C₄H₄N^- • C₄H₅N) + C₄H₅N = (C₄H₄N^- • 2C₄H₅N)

 +  = ( • )

By formula: C₄H₄N^- + H₂O = (C₄H₄N^- • H₂O)

( • ) +  = ( • 2)

By formula: (C₄H₄N^- • H₂O) + H₂O = (C₄H₄N^- • 2H₂O)

References

Go To: Top, Gas phase ion energetics data, Ion clustering data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Gianola, Ichino, et al., 2004
Gianola, A.J.; Ichino, T.; Hoenigman, R.L.; Kato, S.; Bierbaum, V.M.; Lineberger, W.C., Thermochemistry and electronic structure of the pyrrolyl radical, J. Phys. Chem. A, 2004, 108, 46, 10326-10335, https://doi.org/10.1021/jp047790+ . [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Richardson, Stephenson, et al., 1975
Richardson, J.H.; Stephenson, L.M.; Brauman, J.I., Photodetachment of electrons from large molecular systems. Pyrrolate ion. Electron affinity of C₄H₄N, J. Am. Chem. Soc., 1975, 97, 1160. [all data]

Cumming and Kebarle, 1978
Cumming, J.B.; Kebarle, P., Summary of gas phase measurements involving acids AH. Entropy changes in proton transfer reactions involving negative ions. Bond dissociation energies D(A-H) and electron affinities EA(A), Can. J. Chem., 1978, 56, 1. [all data]

Muftakhov, Vasil'ev, et al., 1999
Muftakhov, M.V.; Vasil'ev, Y.V.; Khatymov, R.V.; Mazunov, V.A.; Takhistov, V.V.; Travkin, O.V.; Yakovleva, E.V., Thermochemistry of negatively charged ions. II. Energetics of formation of negative ions from acridanone and some of its derivatives, Rapid Commun. Mass Spectrom., 1999, 13, 10, 912-923, https://doi.org/10.1002/(SICI)1097-0231(19990530)13:10<912::AID-RCM585>3.0.CO;2-W . [all data]

Meot-ner, 1988
Meot-ner, M., The Ionic Hydrogen Bond and Solvation. 7. Interaction Energies of Carbanions with Solvent Molecules, J. Am. Chem. Soc., 1988, 110, 12, 3858, https://doi.org/10.1021/ja00220a022 . [all data]

Meot-Ner (Mautner), 1988
Meot-Ner (Mautner), M., Models for Strong Interactions in Proteins and Enzymes. 2. Interactions of Ions with the Peptide Link and Imidazole, J. Am. Chem. Soc., 1988, 110, 10, 3075, https://doi.org/10.1021/ja00218a014 . [all data]

Notes

Go To: Top, Gas phase ion energetics data, Ion clustering data, References

• Symbols used in this document:
  

  EAneutral	Electron affinity of neutral species
  T	Temperature
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions

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