Diadamantane
- Formula: C14H20
- Molecular weight: 188.3086
- CAS Registry Number: 2292-79-7
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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
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 524. | K | N/A | Clark, McKervey, et al., 1974 | Crystal phase 1 phase; Uncertainty assigned by TRC = 1. K; TRC |
Tfus | 523. | K | N/A | Carson, Laye, et al., 1971 | Uncertainty assigned by TRC = 3. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 517.92 | K | N/A | Spinella, Andrews, et al., 1978 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.01 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 95.94 | kJ/mol | V | Clark, Knox, et al., 1979 | Gas flow technique for Hs, see Clark, Knox, et al., 1975 AND Carson, Laye, et al., 1971, 2; ALS |
ΔsubH° | 96.0 | kJ/mol | N/A | Clark, Knox, et al., 1979 | DRB |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
96.0 ± 0.8 | 319. | TSGC | Clark, Knox, et al., 1975, 2 | Based on data from 305. to 333. K.; AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
8.66 | 517.9 | Domalski and Hearing, 1996 | AC |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
4.445 | 407.22 | crystaline, III | crystaline, II | Spinella, Andrews, et al., 1978, 2 | DH |
8.960 | 440.43 | crystaline, II | crystaline, I | Spinella, Andrews, et al., 1978, 2 | DH |
8.646 | 517.92 | crystaline, I | liquid | Spinella, Andrews, et al., 1978, 2 | DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
10.92 | 407.22 | crystaline, III | crystaline, II | Spinella, Andrews, et al., 1978, 2 | DH |
20.34 | 440.43 | crystaline, II | crystaline, I | Spinella, Andrews, et al., 1978, 2 | DH |
16.69 | 517.92 | crystaline, I | liquid | Spinella, Andrews, et al., 1978, 2 | DH |
References
Go To: Top, 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, McKervey, et al., 1974
Clark, Timothy; McKervey, M. Anthony; Mackle, Henry; Rooney, John J.,
Pre-melting transitions in caged hydrocarbons, a general theory of disorder in plastic crystals,
J. Chem. Soc., Faraday Trans. 1, 1974, 70, 0, 1279, https://doi.org/10.1039/f19747001279
. [all data]
Carson, Laye, et al., 1971
Carson, A.S.; Laye, P.G.; Steele, W.V.; Johnston, D.E.; McKervey, M.A.,
The Enthalpy of Formation of Diamantane,
J. Chem. Thermodyn., 1971, 3, 915. [all data]
Spinella, Andrews, et al., 1978
Spinella, G.M.; Andrews, J.T.S.; Bacon, W.E.; Fort, R.C.; Sabo, J.,
Diamantane:heat capacity(300 to 540 K) and thermodynamics of transition and fusion,
J. Chem. Thermodyn., 1978, 10, 1023-32. [all data]
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, 2
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]
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]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Spinella, Andrews, et al., 1978, 2
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]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tfus Fusion (melting) point Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfusH Enthalpy 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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