Diadamantane
- Formula: C14H20
- Molecular weight: 188.3086
- CAS Registry Number: 2292-79-7
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Gas phase ion energetics 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°gas | -145.9 ± 2.4 | kJ/mol | Ccb | Clark, Knox, et al., 1979 | Gas flow technique for Hs, see Clark, Knox, et al., 1975 AND Carson, Laye, et al., 1971 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics 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:
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 |
---|---|---|---|---|---|
ΔfH°solid | -241.9 ± 2.3 | kJ/mol | Ccb | Clark, Knox, et al., 1979 | Gas flow technique for Hs, see Clark, Knox, et al., 1975 AND Carson, Laye, et al., 1971; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -8125.6 ± 2.6 | kJ/mol | Ccb | Clark, Knox, et al., 1979 | Gas flow technique for Hs, see Clark, Knox, et al., 1975 AND Carson, Laye, et al., 1971; Corresponding ΔfHºsolid = -241.9 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°solid,1 bar | 200.16 | J/mol*K | N/A | Westrum, McKervey, et al., 1978 | crystaline, III phase; DH |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
220.2 | 295.56 | Spinella, Andrews, et al., 1978 | crystaline, III phase; T = 295 to 540 K. Value is unsmoothed experimental datum.; DH |
223.22 | 298.15 | Westrum, McKervey, et al., 1978 | crystaline, III phase; T = 5 to 350 K. Data between 350 and 540 K taken from other work.; DH |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, 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:
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.93 | PE | Dewar and Worley, 1969 | RDSH |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics 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]
Carson, Laye, et al., 1971
Carson, A.S.; Laye, P.G.; Steele, W.V.; Johnson, D.E.; McKervey, M.A.,
The enthalpy of formation of diamantane,
J. Chem. Thermodyn., 1971, 3, 915-918. [all data]
Westrum, McKervey, et al., 1978
Westrum, E.F., Jr.; McKervey, M.A.; Andrews, J.T.S.; Fort, R.C., Jr.; Clark, T.,
Heat capacity and thermodynamic properties of diamantane from 5 to 540 K,
J. Chem. Thermodynam., 1978, 10, 959-965. [all data]
Spinella, Andrews, et al., 1978
Spinella, G.M.; Andrews, J.T.S.; Bacon, W.E.,
Diamantane: heat capacity (300 to 540 K) and thermodynamics of transition and fusion,
J. Chem. Thermodynam., 1978, 10, 1023-1032. [all data]
Dewar and Worley, 1969
Dewar, M.J.S.; Worley, S.D.,
Photoelectron spectra of molecules. I. Ionization potentials of some organic molecules and their interpretation,
J. Chem. Phys., 1969, 50, 654. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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