1,3,5,7-Tetramethyl-adamantane
- Formula: C14H24
- Molecular weight: 192.3404
- IUPAC Standard InChIKey: UJSORZVCMMYGBS-UHFFFAOYSA-N
- CAS Registry Number: 1687-36-1
- Chemical structure:
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Condensed phase thermochemistry data
Go To: Top, Phase change data, References, Notes
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 |
---|---|---|---|---|---|
ΔfH°solid | -86.54 ± 0.46 | kcal/mol | Ccb | Clark, Knox, et al., 1979 | Gas flow technique for Hs, see Clark, Knox, et al., 1975 |
ΔfH°solid | -90.5 ± 0.9 | kcal/mol | Ccb | Steele and Watt, 1977 | |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -2049.95 ± 0.47 | kcal/mol | Ccb | Clark, Knox, et al., 1979 | Gas flow technique for Hs, see Clark, Knox, et al., 1975; Corresponding ΔfHºsolid = -86.55 kcal/mol (simple calculation by NIST; no Washburn corrections) |
ΔcH°solid | -2046.0 ± 0.9 | kcal/mol | Ccb | Steele and Watt, 1977 | Corresponding ΔfHºsolid = -90.5 kcal/mol (simple calculation by NIST; no Washburn corrections) |
Phase change data
Go To: Top, Condensed phase thermochemistry data, References, Notes
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
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 337.2 | K | N/A | Clark, Knox, et al., 1977 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 19.39 | kcal/mol | V | Clark, Knox, et al., 1979 | Gas flow technique for Hs, see Clark, Knox, et al., 1975; ALS |
ΔsubH° | 18.5 | kcal/mol | N/A | Clark, Knox, et al., 1979 | DRB |
ΔsubH° | 20.0 ± 0.3 | kcal/mol | V | Steele and Watt, 1977 | ALS |
ΔsubH° | 23.2 | kcal/mol | N/A | Steele and Watt, 1977 | DRB |
ΔsubH° | 20.0 ± 0.31 | kcal/mol | BG | Steele and Watt, 1977 | Based on data from 310. to 350. K.; AC |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
19.4 ± 2.6 | 305. | TSGC | Clark, Knox, et al., 1975, 2 | Based on data from 295. to 315. K.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
2.35 | 337.2 | Clark, Knox, et al., 1977 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
0.299 | 183.3 | Clark, Knox, et al., 1977 | CAL |
6.960 | 337.2 |
References
Go To: Top, 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.
Clark, Knox, et al., 1979
Clark, T.; Knox, T.M.O.; McKervey, M.A.; Mackle, H.; Rooney, J.J.,
Thermochemistry of bridged-ring substances. Enthalpies of formation of some diamondoid hydrocarbons and of perhydroquinacene. Comparisons with data from empirical force field calculations,
J. Am. Chem. Soc., 1979, 101, 2404-2410. [all data]
Clark, Knox, et al., 1975
Clark, T.; Knox, T.M.; Mackle, H.; McKervey, M.A.; Rooney, J.J.,
Calorimetric evaluation of enthalpies of formation of some bridged-ring hydrocarbons. Comparison with data from empirical force field calculations.,
J. Am. Chem. Soc., 1975, 97, 3835-3836. [all data]
Steele and Watt, 1977
Steele, W.V.; Watt, I.,
The standard enthalpies of formation of adamantanoid compounds 4. Methyladamantanes,
J. Chem. Thermodyn., 1977, 9, 843-849. [all data]
Clark, Knox, et al., 1977
Clark, Timothy; Knox, Trevor Mc.O.; Mackle, Henry; McKervey, M. Anthony,
Order--disorder transitions in substituted adamantanes,
J. Chem. Soc., Faraday Trans. 1, 1977, 73, 0, 1224, https://doi.org/10.1039/f19777301224
. [all data]
Clark, Knox, et al., 1975, 2
Clark, Timothy; Knox, Trevor; Mackle, Henry; McKervey, M. Anthony; Rooney, John J.,
Heats of sublimation of some cage hydrocarbons by a temperature scanning technique,
J. Chem. Soc., Faraday Trans. 1, 1975, 71, 0, 2107, https://doi.org/10.1039/f19757102107
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Tfus Fusion (melting) point ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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