Gallium trimethyl

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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: José A. Martinho Simões

Quantity Value Units Method Reference Comment
Δfgas-46.2 ± 8.1kJ/molReviewMartinho Simões 
Δfgas-25.7 ± 9.9kJ/molReviewMartinho Simões 
Δfgas-36. ± 10.kJ/molReviewMartinho SimõesSelected data. The enthalpy of formation is the average of the values from Long and Sackman, 1958 and Fowell and Mortimer, 1958.

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
MS - José A. Martinho Simões
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Ttriple257.81KN/ALebedev, Smirnova, et al., 1988Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC
Ttriple257.9KN/AMaslova, Novoselova, et al., 1973Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Δvap33.1 ± 0.8kJ/molCC-SBLong and Sackman, 1958MS

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Reference Comment
35.6259. to 263.Fulem, Ruzicka, et al., 2003AC

Enthalpy of sublimation

ΔsubH (kJ/mol) Temperature (K) Method Reference Comment
47.4225. to 257.N/AFulem, Ruzicka, et al., 2003AC
45.2252.AStephenson and Malanowski, 1987Based on data from 247. to 257. K.; AC

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
11.046257.9Maslova, Novoselova, et al., 1973, 2DH
11.05257.9Domalski and Hearing, 1996AC

Entropy of fusion

ΔfusS (J/mol*K) Temperature (K) Reference Comment
42.83257.9Maslova, Novoselova, et al., 1973, 2DH

Enthalpy of phase transition

ΔHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.333244.5crystaline, IIcrystaline, ILebedev, Smirnova, et al., 1988, 2DH
10.602257.81crystaline, IliquidLebedev, Smirnova, et al., 1988, 2DH

Entropy of phase transition

ΔStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
1.36244.5crystaline, IIcrystaline, ILebedev, Smirnova, et al., 1988, 2DH
41.1257.81crystaline, IliquidLebedev, Smirnova, et al., 1988, 2DH

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:


Reaction 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: José A. Martinho Simões

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

Gallium trimethyl (l) + 3Iodine (cr) = GaI3 (cr) + 3Methane, iodo- (l)

By formula: C3H9Ga (l) + 3I2 (cr) = GaI3 (cr) + 3CH3I (l)

Quantity Value Units Method Reference Comment
Δr-200.0 ± 8.4kJ/molRSCFowell and Mortimer, 1958Please also see Pedley and Rylance, 1977 and Cox and Pilcher, 1970.

Gallium trimethyl (l) + 2Iodine (cr) = CH3GaI2 (cr) + 2Methane, iodo- (l)

By formula: C3H9Ga (l) + 2I2 (cr) = CH3GaI2 (cr) + 2CH3I (l)

Quantity Value Units Method Reference Comment
Δr-158.6 ± 4.2kJ/molRSCFowell and Mortimer, 1958Please also see Pedley and Rylance, 1977 and Cox and Pilcher, 1970.

Gallium trimethyl (g) = C2H6Ga (g) + Methane (g)

By formula: C3H9Ga (g) = C2H6Ga (g) + CH4 (g)

Quantity Value Units Method Reference Comment
Δr259. to 272.kJ/molN/ASmith and Patrick, 1983 
Δr264. ± 17.kJ/molN/AMcMillen and Golden, 1982 

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Martinho Simões
Martinho Simões, J.A., Private communication (see http://webbook.nist.gov/chemistry/om/). [all data]

Long and Sackman, 1958
Long, L.H.; Sackman, J.F., The heat of formation and physical properties of gallium trimethyl, Trans. Faraday Soc., 1958, 54, 1797, https://doi.org/10.1039/tf9585401797 . [all data]

Fowell and Mortimer, 1958
Fowell, P.A.; Mortimer, C.T., J. Chem. Soc., 1958, 3734.. [all data]

Lebedev, Smirnova, et al., 1988
Lebedev, B.V.; Smirnova, N.N.; Kulagina, T.G., Enthalpy, Eentropy and Gibbs Energy in bulk polymerization of cyclohexane with ring-opening between 0 and 330 K at standaed pressure, Makromol. Chem., Rapid Commun., 1988, 9, 781. [all data]

Maslova, Novoselova, et al., 1973
Maslova, V.A.; Novoselova, N.V.; Moseeva, E.M.; Berezhnaya, N.D.; Rabinovich, I.B., Specific Heat and Phase Changes of Triethylindium, Triethylantimony, and Trimethylgallium, Tr. Khim. Khim. Tekhnol., 1973, 1973, 51. [all data]

Fulem, Ruzicka, et al., 2003
Fulem, M.; Ruzicka, K.; Ruzicka, V.; Hulicius, E.; Simecek, T.; Melichar, K.; Pangrác, J.; Rushworth, S.A.; Smith, L.M., Vapor pressure of metal organic precursors, Journal of Crystal Growth, 2003, 248, 99-107, https://doi.org/10.1016/S0022-0248(02)01840-7 . [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Maslova, Novoselova, et al., 1973, 2
Maslova, V.A.; Novoselova, N.V.; Moseeva, E.M.; Berezhnaya, N.D.; Rabinovich, I.B., Specific heat and phase changes of triethylindium, triethyl antimony, and trimethyl gallium, Trudy. Khim. Khim. Tekhnol., 1973, (2), 51-52. [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]

Lebedev, Smirnova, et al., 1988, 2
Lebedev, B.V.; Smirnova, N.N.; Kulagina, T.G., Enthalpy, entropy and Gibbs energy in bulk polymerization of cyclohexene with ring-opening between 0 and 330 K at standard pressure, Makromol. Chem., Rapid Commun., 1988, 9, 781-784. [all data]

Pedley and Rylance, 1977
Pedley, J.B.; Rylance, J., Computer Analysed Thermochemical Data: Organic and Organometallic Compounds, University of Sussex, Brigton, 1977. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds in Academic Press, New York, 1970. [all data]

Smith and Patrick, 1983
Smith, G.P.; Patrick, R., Int. J. Chem. Kinet., 1983, 15, 167. [all data]

McMillen and Golden, 1982
McMillen, D.F.; Golden, D.M., Hydrocarbon bond dissociation energies, Ann. Rev. Phys. Chem., 1982, 33, 493. [all data]


Notes

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