1,3,4-Oxadiazole, 2,5-diphenyl-

• Formula: C₁₄H₁₀N₂O
• Molecular weight: 222.2420
• IUPAC Standard InChI: InChI=1S/C14H10N2O/c1-3-7-11(8-4-1)13-15-16-14(17-13)12-9-5-2-6-10-12/h1-10H Copy

  
• IUPAC Standard InChIKey: DCJKUXYSYJBBRD-UHFFFAOYSA-N Copy
• CAS Registry Number: 725-12-2
• Chemical structure:
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• Other names: 2,5-Diphenyloxadiazole; 2,5-Diphenyl-1,3,4-oxadiazole; PPD; PPD (Scintillator)
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• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • References
  • Notes
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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 by: Robert L. Brown and Stephen E. Stein

Reduced pressure boiling point

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: Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

Appearance energy determinations

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, 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.

Karyakin, Mochalov, et al., 1975
Karyakin, N.V.; Mochalov, A.N.; Rabinovich, I.B.; Kamelova, G.P.; Berestneva, G.L.; Astaf'ev, S.A.; Korshak, V.V., Thermodynamics of synthesis of poly-(p,p'-diphenyl-enexido) -1,3,4-oxadiazole by intramolecular cyclodehydration of poly-(p,p'-diphenyleneoxido)-hydrazide, Polym. Sci. USSR, 1975, 17, 2174-2181. [all data]

Milone and Allavena, 1931
Milone, M.; Allavena, S., Sul calore di combustione di alcuni composti eterociclici, Gazz. Chim. Ital., 1931, 61, 75-90. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc., Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]

Cotter, 1964
Cotter, J.L., Electron-impact fragmentation patterns of 3,5-diphenyl-1,2,4-oxadiazole and 2,5-diphenyl-1,3,4-oxadiazole, J. Chem. Soc., 1964, 5491. [all data]

Notes

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• Symbols used in this document:
  

  AE	Appearance energy
  Tboil	Boiling point
  ΔcH°solid	Enthalpy of combustion of solid at standard conditions
  ΔfH°solid	Enthalpy of formation of solid at standard conditions

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