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2,2,7,7-Tetramethylocta-3,5-diyne

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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

Quantity Value Units Method Reference Comment
Deltafliquid156.1 ± 2.0kJ/molCcbKupreev and Shimonaev, 1977 
Quantity Value Units Method Reference Comment
Deltacliquid-7450.7 ± 1.7kJ/molCcbKupreev and Shimonaev, 1977Corresponding «DELTA»fliquid = 156.1 kJ/mol (simple calculation by NIST; no Washburn corrections)

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 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

View reactions leading to C12H18+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
8.61 ± 0.02PEHeilbronner, Jones, et al., 1978Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C12H18+8.82 ± 0.04?EIBock and Seidl, 1968RDSH

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.

Kupreev and Shimonaev, 1977
Kupreev, A.I.; Shimonaev, G.S., Determination of the enthalpies of formation of liquid acetylenic hydrocarbons, Russ. J. Phys. Chem. (Engl. Transl.), 1977, 51, 826-827. [all data]

Heilbronner, Jones, et al., 1978
Heilbronner, E.; Jones, T.B.; Kloster-Jensen, E.; Maier, J.P., 191. Electronic states of di-t-butylpolyacetylene radical cations, Helv. Chim. Acta, 1978, 61, 2040. [all data]

Bock and Seidl, 1968
Bock, H.; Seidl, H., d-Orbital effects in siliconsubstituted «pi»-electron systems. Part XII. Some spectroscopic properties of alkyl and silyl acetylenes and polyacetylenes, J. Chem. Soc. B, 1968, 1158. [all data]


Notes

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