Tetracyano-p-quinodimethane

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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:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfgas184.3kcal/molN/AMetzger, Kuo, et al., 1983Value computed using ΔfHsolid° value of 666.1±5.9 kj/mol from Metzger, Kuo, et al., 1983 and ΔsubH° value of 105.0 kj/mol from Boyd, 1963.; DRB
Δfgas184.0 ± 2.5kcal/molCcbBoyd, 1963ALS

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
Δfsolid159.2 ± 1.4kcal/molCcrMetzger, Kuo, et al., 1983see Metzger, 1977
Δfsolid158.9 ± 0.6kcal/molCcbBoyd, 1963 
Quantity Value Units Method Reference Comment
Δcsolid-1424.2 ± 1.4kcal/molCcrMetzger, Kuo, et al., 1983see Metzger, 1977
Δcsolid-1424.2 ± 0.6kcal/molCcbBoyd, 1963 

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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tfus567.KN/AMetzger, Kuo, et al., 1983, 2Uncertainty assigned by TRC = 2. K; TRC
Quantity Value Units Method Reference Comment
Δsub25.1kcal/molVBoyd, 1963ALS
Δsub25.10kcal/molN/ABoyd, 1963DRB

Enthalpy of sublimation

ΔsubH (kcal/mol) Temperature (K) Method Reference Comment
25.8 ± 0.5500.TKersten and Oppermann, 1984Based on data from 452. to 553. K.; AC
29.2 ± 0.5423.MEKersten and Oppermann, 1984Based on data from 382. to 464. K.; AC
30.1 ± 0.2413.ME,TEde Kruif and Govers, 1980AC
25.0 ± 2.4448.N/ASwain, Kwan, et al., 1980Based on data from 433. to 499. K. See also Stephenson and Malanowski, 1987.; AC
25.1 ± 2.2465.MGBoyd, 1963, 2See also Cox and Pilcher, 1970.; AC

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Notes

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

Metzger, Kuo, et al., 1983
Metzger, R.M.; Kuo, C.S.; Arafat, E.S., A semi-micro rotating-bomb combustion calorimeter, J. Chem. Thermodyn., 1983, 15, 841-851. [all data]

Boyd, 1963
Boyd, R.H., Thermochemistry of cyanocarbons, J. Chem. Phys., 1963, 38, 2529-2535. [all data]

Metzger, 1977
Metzger, R.M., The enthalpy of formation and the experimental crystal binding energy of tetrathiofulvalenium 7,7,8,8-tetracyanoquinodimethanide (TTF TCNQ), J. Chem. Phys., 1977, 66, 2525-2533. [all data]

Metzger, Kuo, et al., 1983, 2
Metzger, R.M.; Kuo, C.S.; Arafat, E.S., A semi-micro rotating-bomb combustion calorimeter, J. Chem. Thermodyn., 1983, 15, 841. [all data]

Kersten and Oppermann, 1984
Kersten, von F.; Oppermann, H., Z. Phys. Chem. (Leipzig), 1984, 265, 1207. [all data]

de Kruif and Govers, 1980
de Kruif, C.G.; Govers, H.A.J., Enthalpies of sublimation and vapor pressures of 2,2´-bis-1,3-dithiole (TTF), 7,7,8,8-tetracyanoquinodimethane (TCNQ), and TTF--TCNQ (1:1), J. Chem. Phys., 1980, 73, 1, 553, https://doi.org/10.1063/1.439854 . [all data]

Swain, Kwan, et al., 1980
Swain, H.A.; Kwan, Chiu-Yin; Sung, Ho-Nan, Measurement of vapor pressures from 20 to 30.degree.C of long-chain peroxy acids, J. Phys. Chem., 1980, 84, 11, 1347-1349, https://doi.org/10.1021/j100448a012 . [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Boyd, 1963, 2
Boyd, Richard H., Thermochemistry of Cyanocarbons, J. Chem. Phys., 1963, 38, 10, 2529, https://doi.org/10.1063/1.1733536 . [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]


Notes

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