Tri-t-butylmethane

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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfgas-235.2 ± 4.3kJ/molCcbVerevkin, Nolke, et al., 1997 
Δfgas-236. ± 3.kJ/molCcbFlamm-ter Meer, Beckhaus, et al., 1986 

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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Δfsolid-292.2 ± 4.3kJ/molCcbVerevkin, Nolke, et al., 1997ALS
Δfsolid-244. ± 3.kJ/molCcbFlamm-ter Meer, Beckhaus, et al., 1986ALS
Quantity Value Units Method Reference Comment
Δcsolid-8825.0 ± 4.3kJ/molCcbVerevkin, Nolke, et al., 1997Corresponding Δfsolid = -292.3 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Δcsolid-8873.6 ± 2.7kJ/molCcbFlamm-ter Meer, Beckhaus, et al., 1986Corresponding Δfsolid = -243.7 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS

Constant pressure heat capacity of solid

Cp,solid (J/mol*K) Temperature (K) Reference Comment
354.8298.15Meer, Beckhaus, et al., 1986DH

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:
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Δsub55.4kJ/molCGC-DSCChickos, Hesse, et al., 1998AC
Δsub57.03 ± 0.43kJ/molVVerevkin, Nolke, et al., 1997ALS
Δsub57.0kJ/molN/AVerevkin, Nolke, et al., 1997DRB
Δsub7.70 ± 0.08kJ/molVFlamm-ter Meer, Beckhaus, et al., 1986ALS
Δsub8.0kJ/molN/AFlamm-ter Meer, Beckhaus, et al., 1986DRB

Enthalpy of sublimation

ΔsubH (kJ/mol) Temperature (K) Method Reference Comment
57.0 ± 0.4288.TVerevkin, Nolke, et al., 1997Based on data from 265. to 319. K.; AC
57.7 ± 2.8290.HSAChickos, Hesse, et al., 1995Based on data from 273. to 306. K.; AC
7.7 ± 0.1311.N/AMeer, Beckhaus, et al., 1986Based on data from 295. to 330. K.; AC

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
3.53358.2Meer, Beckhaus, et al., 1986AC

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.

Verevkin, Nolke, et al., 1997
Verevkin, S.P.; Nolke, M.; Beckhaus, H.D.; Ruchardt, C., Enthalpies of formation of hexaethylethane, octamethylhexane, and tri-tert-butylmethane. Extremely strained hydrocarbons, J. Org. Chem., 1997, 62, 4683-4686. [all data]

Flamm-ter Meer, Beckhaus, et al., 1986
Flamm-ter Meer, M.A.; Beckhaus, H.D.; Ruchardt, C., Thermolabile kohlenwasserstoffe. XXIX. Verbrennungsenthalpie und sublimationsenthalpie von tri-tert-butylmethan, Thermochim. Acta, 1986, 107, 331-338. [all data]

Meer, Beckhaus, et al., 1986
Meer, M.A.F.-T.; Beckhaus, H.D.; Ruechardt, C., Thermally unstable hydrocarbons. XXIX. Heat of combustion and heat of sublimation of tri(tert-butyl)methane, Thermochim. Acta, 1986, 107, 331-338. [all data]

Chickos, Hesse, et al., 1998
Chickos, James; Hesse, Donald; Hosseini, Sarah; Nichols, Gary; Webb, Paul, Sublimation enthalpies at 298.15K using correlation gas chromatography and differential scanning calorimetry measurements, Thermochimica Acta, 1998, 313, 2, 101-110, https://doi.org/10.1016/S0040-6031(97)00432-2 . [all data]

Chickos, Hesse, et al., 1995
Chickos, James S.; Hesse, Donald G.; Hosseini, Sarah; Liebman, Joel F.; David Mendenhall, G.; Verevkin, Sergej P.; Rakus, Klaus; Beckhaus, Hans-Dieter; Rüchardt, Christoph, Enthalpies of vaporization of some highly branched hydrocarbons, The Journal of Chemical Thermodynamics, 1995, 27, 6, 693-705, https://doi.org/10.1006/jcht.1995.0071 . [all data]


Notes

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