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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
Deltafgas-11.0 ± 1.9kcal/molReviewMartinho Simões 
Deltafgas-6.1 ± 2.4kcal/molReviewMartinho Simões 
Deltafgas-8.6 ± 2.4kcal/molReviewMartinho SimõesSelected data. The enthalpy of formation is the average of the values from Long and Sackman, 1958 and Fowell and Mortimer, 1958.

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 as indicated in comments:
MS - José A. Martinho Simões
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Deltafliquid-19.0 ± 1.9kcal/molReviewMartinho SimõesMS
Deltafliquid-14.1 ± 2.4kcal/molReviewMartinho SimõesMS
Deltafliquid-16.5 ± 2.4kcal/molReviewMartinho SimõesSelected data. The enthalpy of formation is the average of the values from Long and Sackman, 1958 and Fowell and Mortimer, 1958.; MS
Quantity Value Units Method Reference Comment
Deltacliquid-701.0 ± 1.9kcal/molCC-SBLong and Sackman, 1958Please also see Pedley and Rylance, 1977 and Cox and Pilcher, 1970.; MS
Quantity Value Units Method Reference Comment
liquid60.25cal/mol*KN/ALebedev, Smirnova, et al., 1988DH

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
44.93298.15Lebedev, Smirnova, et al., 1988T = 0 to 330 K.; DH
42.751298.15Maslova, Novoselova, et al., 1973T = 60 to 300 K.; DH

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., 1988, 2Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC
Ttriple257.9KN/AMaslova, Novoselova, et al., 1973, 2Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Deltavap7.9 ± 0.2kcal/molCC-SBLong and Sackman, 1958MS

Enthalpy of vaporization

DeltavapH (kcal/mol) Temperature (K) Reference Comment
8.51259. - 263.Fulem, Ruzicka, et al., 2003AC

Enthalpy of sublimation

DeltasubH (kcal/mol) Temperature (K) Method Reference Comment
11.3225. - 257.N/AFulem, Ruzicka, et al., 2003AC
10.8252.AStephenson and Malanowski, 1987Based on data from 247. - 257. K.; AC

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Reference Comment
2.6401257.9Maslova, Novoselova, et al., 1973DH
2.641257.9Domalski and Hearing, 1996AC

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
10.24257.9Maslova, Novoselova, et al., 1973DH

Enthalpy of phase transition

DeltaHtrs (kcal/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.0796244.5crystaline, IIcrystaline, ILebedev, Smirnova, et al., 1988DH
2.5339257.81crystaline, IliquidLebedev, Smirnova, et al., 1988DH

Entropy of phase transition

DeltaStrs (cal/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
0.325244.5crystaline, IIcrystaline, ILebedev, Smirnova, et al., 1988DH
9.82257.81crystaline, IliquidLebedev, Smirnova, et al., 1988DH

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

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, 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: 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
Deltar-47.8 ± 2.0kcal/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
Deltar-37.9 ± 1.0kcal/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
Deltar61.9 - 65.0kcal/molN/ASmith and Patrick, 1983 
Deltar63.0 ± 4.0kcal/molN/AMcMillen and Golden, 1982 

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Notes

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]

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]

Lebedev, Smirnova, et al., 1988
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]

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, triethyl antimony, and trimethyl gallium, Trudy. Khim. Khim. Tekhnol., 1973, (2), 51-52. [all data]

Lebedev, Smirnova, et al., 1988, 2
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, 2
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]

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]

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

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References