Hexamethylditin


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-26.9 ± 8.8kJ/molReviewMartinho SimõesThe enthalpy of formation relies on -185.5 ± 3.7 kJ/mol for the enthalpy of formation of Sn(Me)3(Br)(l).

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: José A. Martinho Simões

Quantity Value Units Method Reference Comment
Δfliquid-77.1 ± 7.7kJ/molReviewMartinho SimõesThe enthalpy of formation relies on -185.5 ± 3.7 kJ/mol for the enthalpy of formation of Sn(Me)3(Br)(l).

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 by: José A. Martinho Simões

Quantity Value Units Method Reference Comment
Δvap50.2 ± 4.2kJ/molRSCCox and Pilcher, 1970 

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

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Individual Reactions

Hexamethylditin (l) + Iodine (cr) = 2C3H9ISn (l)

By formula: C6H18Sn2 (l) + I2 (cr) = 2C3H9ISn (l)

Quantity Value Units Method Reference Comment
Δr-184.1 ± 2.9kJ/molRSCPedley, Skinner, et al., 1957Please also see Pedley and Rylance, 1977 and Cox and Pilcher, 1970.

Hexamethylditin (l) + Bromine (l) = 2C3H9BrSn (l)

By formula: C6H18Sn2 (l) + Br2 (l) = 2C3H9BrSn (l)

Quantity Value Units Method Reference Comment
Δr-293.9 ± 2.1kJ/molRSCPedley, Skinner, et al., 1957Please also see Pedley and Rylance, 1977 and Cox and Pilcher, 1970.

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 as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to C6H18Sn2+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
7.8PEGranozzi, Bertoncello, et al., 1985LBLHLM
8.0PESzepes, Koranyi, et al., 1981LLK
8.02 ± 0.15EILappert, Pedley, et al., 1971LLK
8.20PEMochida, Worley, et al., 1985Vertical value; LBLHLM
8.21PEGranozzi, Bertoncello, et al., 1985Vertical value; LBLHLM
8.20PESzepes, Koranyi, et al., 1981Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C3H9Sn+9.51 ± 0.22(CH3)3SnEILappert, Pedley, et al., 1971LLK
C3H9Sn+9.82 ± 0.15?EIYergey and Lampe, 1968RDSH
C3H9Sn+9.65?EIYergey and Lampe, 1968RDSH
C5H15Sn2+8.17 ± 0.03CH3EIYergey and Lampe, 1968RDSH
C6H18Sn2+7.42 ± 0.02?EIPitt, Bursey, et al., 1970RDSH
C6H18Sn2+8.08 ± 0.02?EIYergey and Lampe, 1968RDSH

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]

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

Pedley, Skinner, et al., 1957
Pedley, J.B.; Skinner, H.A.; Chernick, C.L., Thermochemistry of metallic alkyls. Part 8.?Tin tetramethyl, and hexamethyl distannane, Trans. Faraday Soc., 1957, 53, 1612, https://doi.org/10.1039/tf9575301612 . [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]

Granozzi, Bertoncello, et al., 1985
Granozzi, G.; Bertoncello, R.; Tondello, E.; Ajo, D., He(I)/He(II) Sn 5p photoionization cross sections: Definitive evidence from the spectra of Sn2(CH3)6, J. Electron Spectrosc. Relat. Phenom., 1985, 36, 207. [all data]

Szepes, Koranyi, et al., 1981
Szepes, L.; Koranyi, T.; Naray-Szabo, G.; Modelli, A.; Distefano, G., Ultraviolet photoelectron spectra of group IV hexamethyl derivatives containing a metal-metal bond, J. Organomet. Chem., 1981, 217, 35. [all data]

Lappert, Pedley, et al., 1971
Lappert, M.F.; Pedley, J.B.; Simpson, J.; Spalding, T.R., Bonding studies of compounds of boron and the Group IV elements. VI. Mass spectrometric studies on compounds Me4M and Me3M-M'Me3 (M and M'=C, Si, Ge, Sn, and Pb): thermochemical data, J. Organomet. Chem., 1971, 29, 195. [all data]

Mochida, Worley, et al., 1985
Mochida, K.; Worley, S.; Kochi, J., UV photoelectron spectra of peralkylated catenates of Group 4B elements (silicon, germanium, and tin), Bull. Chem. Soc. Jpn., 1985, 58, 3389. [all data]

Yergey and Lampe, 1968
Yergey, A.L.; Lampe, F.W., An electron impact study of ionization and dissociation of trimethylstannanes, J. Organometal. Chem., 1968, 15, 339. [all data]

Pitt, Bursey, et al., 1970
Pitt, C.G.; Bursey, M.M.; Rogerson, P.F., Catenates of the group IV elements. Correlation of σ electron energies, J. Am. Chem. Soc., 1970, 92, 519. [all data]


Notes

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