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:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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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
  • References
  • Notes
• Other data available:
  • Mass spectrum (electron ionization)
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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

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.

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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