1,3,5,7-Tetramethyl-adamantane

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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-68.0 ± 1.7kcal/molCcbClark, Knox, et al., 1979Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -67.15 ± 0.50 kcal/mol; Gas flow technique for Hs, see Clark, Knox, et al., 1975
Δfgas-67.4 ± 1.7kcal/molCcbSteele and Watt, 1977Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -70.5 ± 0.9 kcal/mol

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
Δfsolid-86.54 ± 0.46kcal/molCcbClark, Knox, et al., 1979Gas flow technique for Hs, see Clark, Knox, et al., 1975
Δfsolid-90.5 ± 0.9kcal/molCcbSteele and Watt, 1977 
Quantity Value Units Method Reference Comment
Δcsolid-2049.95 ± 0.47kcal/molCcbClark, Knox, et al., 1979Gas flow technique for Hs, see Clark, Knox, et al., 1975; Corresponding Δfsolid = -86.55 kcal/mol (simple calculation by NIST; no Washburn corrections)
Δcsolid-2046.0 ± 0.9kcal/molCcbSteele and Watt, 1977Corresponding Δfsolid = -90.5 kcal/mol (simple calculation by NIST; no Washburn corrections)

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
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
Tfus337.2KN/AClark, Knox, et al., 1977Crystal phase 1 phase; Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Δsub19.39kcal/molVClark, Knox, et al., 1979Gas flow technique for Hs, see Clark, Knox, et al., 1975; ALS
Δsub18.5kcal/molN/AClark, Knox, et al., 1979DRB
Δsub20.0 ± 0.3kcal/molVSteele and Watt, 1977ALS
Δsub23.2kcal/molN/ASteele and Watt, 1977DRB
Δsub20.0 ± 0.31kcal/molBGSteele and Watt, 1977Based on data from 310. to 350. K.; AC

Enthalpy of sublimation

ΔsubH (kcal/mol) Temperature (K) Method Reference Comment
19.4 ± 2.6305.TSGCClark, Knox, et al., 1975, 2Based on data from 295. to 315. K.; AC

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Reference Comment
2.35337.2Clark, Knox, et al., 1977AC

Entropy of fusion

ΔfusS (cal/mol*K) Temperature (K) Reference Comment
0.299183.3Clark, Knox, et al., 1977CAL
6.960337.2

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:


Gas phase ion energetics 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: Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV) Method Reference
9.23PIBodor, Dewar, et al., 1970

Mass spectrum (electron ionization)

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass spectrum
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Additional Data

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Due to licensing restrictions, this spectrum cannot be downloaded.

Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin V.G.Zaikin, TIPS, Russian Acad. Sci.
NIST MS number 214987

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Gas Chromatography

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

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Column type Active phase Temperature (C) I Reference Comment
CapillarySqualane100.1162.Bogoslovsky, Anvaer, et al., 1978 
CapillarySqualane110.1169.Bogoslovsky, Anvaer, et al., 1978 
CapillarySqualane125.1176.Bogoslovsky, Anvaer, et al., 1978 
CapillarySqualane140.1185.Bogoslovsky, Anvaer, et al., 1978 
CapillaryApiezon L140.1214.Hála, Eyem, et al., 1970N2; Column length: 50. m; Column diameter: 0.2 mm
CapillarySqualane110.1169.Hála, Eyem, et al., 1970N2; Column length: 50. m; Column diameter: 0.2 mm
CapillarySqualane125.1176.Hála, Eyem, et al., 1970N2; Column length: 50. m; Column diameter: 0.2 mm
CapillarySqualane140.1185.Hála, Eyem, et al., 1970N2; Column length: 50. m; Column diameter: 0.2 mm

Kovats' RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryHP-5MS1136.Yang, Wang, et al., 200630. m/0.25 mm/0.25 μm, 50. C @ 2. min, 6. K/min; Tend: 300. C

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, 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]

Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P., Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [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]

Bodor, Dewar, et al., 1970
Bodor, N.; Dewar, M.J.S.; Worley, S.D., Photoelectron spectra of molecules. III. Ionization potentials of some cyclic hydrocarbons and their derivatives, and heats of formation and ionization potentials calculated by the MINDO SCF MO method, J. Am. Chem. Soc., 1970, 92, 19. [all data]

Bogoslovsky, Anvaer, et al., 1978
Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S., Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192. [all data]

Hála, Eyem, et al., 1970
Hála, S.; Eyem, J.; Burkhard, J.; Landa, S., Retention indices of adamantanes, J. Chromatogr. Sci., 1970, 8, 4, 203-209, https://doi.org/10.1093/chromsci/8.4.203 . [all data]

Yang, Wang, et al., 2006
Yang, C.; Wang, Z.D.; Hollebone, B.P.; Peng, X.; Fingas, M.; Landriault, M., GC/MS Quantitation of diamondoid compounds in crude oils and petroleum products, Environmental Forensics, 2006, 7, 4, 377-390, https://doi.org/10.1080/15275920600996396 . [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, References