1-Butyne, 3,3-dimethyl-

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Gas 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Δfgas25.36kcal/molCcrPimenova, Kozina, et al., 1986ALS
Δfgas25.57 ± 0.31kcal/molIonSiretskaya, Takhistov, et al., 1986ALS
Δfgas25.50kcal/molN/AKupreev and Shimonaev, 1977Value computed using ΔfHliquid° value of 78.5±2.4 kj/mol from Kupreev and Shimonaev, 1977 and ΔvapH° value of 28.2 kj/mol from Pimenova, Kozina, et al., 1986.; DRB

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
8.78350.Thermodynamics Research Center, 1997p=1 bar.; GT
13.53100.
18.47150.
22.98200.
29.281273.15
31.384298.15
31.537300.
39.379400.
45.985500.
51.398600.
55.891700.
59.696800.
62.966900.
65.7911000.
68.241100.
70.361200.
72.231300.
73.831400.
75.241500.

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
Δfliquid18.6 ± 0.36kcal/molCcrPimenova, Kozina, et al., 1986 
Δfliquid18.60 ± 0.31kcal/molIonSiretskaya, Takhistov, et al., 1986 
Δfliquid18.75 ± 0.58kcal/molCcbKupreev and Shimonaev, 1977 
Quantity Value Units Method Reference Comment
Δcliquid-924.50 ± 0.31kcal/molCcrPimenova, Kozina, et al., 1986Corresponding Δfliquid = 18.6 kcal/mol (simple calculation by NIST; no Washburn corrections)
Δcliquid-924.63 ± 0.57kcal/molCcbKupreev and Shimonaev, 1977Corresponding Δfliquid = 18.75 kcal/mol (simple calculation by NIST; no Washburn corrections)

Reaction 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: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

C6H9- + Hydrogen cation = 1-Butyne, 3,3-dimethyl-

By formula: C6H9- + H+ = C6H10

Quantity Value Units Method Reference Comment
Δr378.0 ± 2.2kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale
Quantity Value Units Method Reference Comment
Δr370.2 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Notes

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

Pimenova, Kozina, et al., 1986
Pimenova, S.M.; Kozina, M.P.; Gal'chenko, G.L.; Siretskaya, T.V.; Takhistov, V.V.; Kuznetsova, T.S.; Proskurnina, M.V.; Kotel'nikova, T.A., Heats of combustion and formation of some compounds with acetylene bonding, Termodin. Org. Soedin., 1986, 12-16. [all data]

Siretskaya, Takhistov, et al., 1986
Siretskaya, T.V.; Takhistov, V.V.; Pimenova, S.M.; Orlov, V.M.; Pustobaev, V.N., Formation enthalpies of acetylene ketones fragments in gas phases, React. Kinet. Catal. Lett., 1986, 31, 15-19. [all data]

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]

Thermodynamics Research Center, 1997
Thermodynamics Research Center, Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [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]


Notes

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