2H-Pyran, 3,4-dihydro-

• Formula: C₅H₈O
• Molecular weight: 84.1164
• IUPAC Standard InChI: InChI=1S/C5H8O/c1-2-4-6-5-3-1/h2,4H,1,3,5H2 Copy

  
• IUPAC Standard InChIKey: BUDQDWGNQVEFAC-UHFFFAOYSA-N Copy
• CAS Registry Number: 110-87-2
• 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.
• Species with the same structure:
  • Pyran, 2,3-dihydro-
  • Dihydropyran
• Other names: Dihydropyran; 2,3-Dihydro-4H-pyran; 2H-3,4-Dihydropyran; 3,4-Dihydro-2H-pyran; 3,4-Dihydropyran; 5,6-Dihydro-4H-pyran; 2,3-Dihydropyran; 3,4-Dihdro-2H-pyrane; 3,4-Dihydro-2-pyran; δ2-Dihydropyran; Pyran, dihydro-; 1,2-Pyran, 3,4-dihydro-; NSC 57860
• Information on this page:
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • IR Spectrum
  • UV/Visible spectrum
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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Gas phase ion energetics data

Go To: Top, 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

Mass spectrum (electron ionization)

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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

References

Go To: Top, Gas phase ion energetics 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.

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]

Bloch, Brogli, et al., 1978
Bloch, M.; Brogli, F.; Heilbronner, E.; Jones, T.B.; Prinzbach, H.; Schweikert, O., 138. Photoelectron spectra of unsaturated oxides. I. 1,4- dioxin and related systems, Helv. Chim. Acta, 1978, 61, 1388. [all data]

Planckaert, Doucet, et al., 1974
Planckaert, A.A.; Doucet, J.; Sandorfy, C., Comparative study of the vacuum ultraviolet absorption and photoelectron spectra of some simple ethers and thioethers, J. Chem. Phys., 1974, 60, 4846. [all data]

Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J., Ionization potentials of some molecules, J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]

Batich, Heilbronner, et al., 1976
Batich, C.; Heilbronner, E.; Quinn, C.B.; Wiseman, J.R., The electronic structure of vinyl ethers and sulfides with interrupted conjugation examined by photoelectron spectroscopy, Helv. Chim. Acta, 1976, 59, 512. [all data]

Notes

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), References

• Symbols used in this document:
  

  IE (evaluated)

  Recommended ionization energy

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