Disilane, hexamethyl-
- Formula: C6H18Si2
- Molecular weight: 146.3781
- IUPAC Standard InChIKey: NEXSMEBSBIABKL-UHFFFAOYSA-N
- CAS Registry Number: 1450-14-2
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Hexamethyldisilane; (CH3)6Si2; Permethyldisilane; CH7280
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Gas phase ion energetics data
Go To: Top, Mass spectrum (electron ionization), Gas Chromatography, References, Notes
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
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.27 ± 0.05 | PIPECO | Szepes and Baer, 1984 | T = 298K; LBLHLM |
8.27 ± 0.05 | PIPECO | Szepes and Baer, 1984 | T = 0K; LBLHLM |
8.27 ± 0.05 | PIPECO | Szepes and Baer, 1984, 2 | T = 0K; LBLHLM |
8.4 | PE | Szepes, Koranyi, et al., 1981 | LLK |
8.0 | PE | Potzinger, Ritter, et al., 1975 | LLK |
8.35 ± 0.12 | EI | Lappert, Pedley, et al., 1971 | LLK |
8.46 ± 0.15 | EI | Gaidis, Briggs, et al., 1971 | LLK |
8.00 ± 0.01 | EI | Pitt, Bursey, et al., 1970 | RDSH |
8.35 ± 0.12 | EI | Lappert, Simpson, et al., 1969 | RDSH |
8.79 ± 0.08 | EI | Hess, Lampe, et al., 1965 | RDSH |
8.68 | PE | Mochida, Worley, et al., 1985 | Vertical value; LBLHLM |
8.7 ± 0.05 | PE | Szepes, Koranyi, et al., 1981 | Vertical value; LLK |
8.69 | PE | Khvostenko, Zykov, et al., 1981 | Vertical value; LLK |
8.69 | PE | Bock and Ensslin, 1971 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C3H9Si+ | 9.8 ± 0.1 | C3H9Si | PIPECO | Szepes and Baer, 1984 | T = 0K; LBLHLM |
C3H9Si+ | 9.9 | (CH3)3Si | EI | Potzinger, Ritter, et al., 1975 | LLK |
C3H9Si+ | 10.22 ± 0.18 | (CH3)3Si | EI | Lappert, Pedley, et al., 1971 | LLK |
C3H9Si+ | 10.22 ± 0.18 | ? | EI | Lappert, Simpson, et al., 1969 | RDSH |
C3H9Si+ | 10.0 ± 0.1 | ? | EI | Band, Davidson, et al., Commun. 1967 | RDSH |
C3H9Si+ | 10.0 ± 0.1 | ? | EI | Connor, Finney, et al., 1966 | RDSH |
C3H9Si+ | 10.69 ± 0.04 | ? | EI | Hess, Lampe, et al., 1964 | RDSH |
C5H15Si2+ | 9.6 ± 0.1 | CH3 | PIPECO | Szepes and Baer, 1984 | T = 0K; LBLHLM |
C5H15Si2+ | 9.6 ± 0.1 | CH3 | PIPECO | Szepes and Baer, 1984, 2 | T = 0K; LBLHLM |
C5H15Si2+ | 10.74 ± 0.08 | CH3 | EI | Hess, Lampe, et al., 1965 | RDSH |
Mass spectrum (electron ionization)
Go To: Top, Gas phase ion energetics data, Gas Chromatography, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
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 | Japan AIST/NIMC Database- Spectrum MS-NW-9254 |
NIST MS number | 236663 |
Gas Chromatography
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | C78, Branched paraffin | 130. | 686.1 | Dallos, Sisak, et al., 2000 | He; Column length: 3.3 m |
Packed | C78, Branched paraffin | 130. | 685.9 | Reddy, Dutoit, et al., 1992 | Chromosorb G HP; Column length: 3.3 m |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Squalane | 698. | Szekely, Nefedov, et al., 1967 | Nitrogen, 5. K/min; Column length: 50. m; Column diameter: 0.25 mm; Tstart: 60. C; Tend: 250. C |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Squalane | 699. | Szekely, Nefedov, et al., 1967 | Nitrogen; Column length: 50. m; Column diameter: 0.25 mm; Program: not specified |
References
Go To: Top, 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.
Szepes and Baer, 1984
Szepes, L.; Baer, T.,
Dissociation dynamics of energy selected hexamethyldisilane ions and the heats of formation of (CH3)3Si+ and (CH3)3Si,
J. Am. Chem. Soc., 1984, 106, 273. [all data]
Szepes and Baer, 1984, 2
Szepes, L.; Baer, T.,
(CH3)3SiX tipusu vegyuletek vizsgalata fotoelectron-fotoion koincidenciaval,I. Meghatarozott belso energiaju hexametil-diszilan-ionok disszociaciojanak dinamikaja,
Magy. Kem. Foly., 1984, 90, 104. [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]
Potzinger, Ritter, et al., 1975
Potzinger, P.; Ritter, A.; Krause, J.,
Massenspektrometrische Bestimmung von Bindungsenergien in siliciumorganischen Verbindungen,
Z. Naturforsch. A:, 1975, 30, 347. [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]
Gaidis, Briggs, et al., 1971
Gaidis, J.M.; Briggs, P.R.; Shannon, T.W.,
Mass spectra of disilanes. Phenyl-silicon interaction and silicon-silicon bond strength,
J. Phys. Chem., 1971, 75, 974. [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]
Lappert, Simpson, et al., 1969
Lappert, M.F.; Simpson, J.; Spalding, T.R.,
Bonding studies of compounds of the group IV elements: ionisation potentials of the Me3M radicals,
J.Organometal. Chem., 1969, 17, PI. [all data]
Hess, Lampe, et al., 1965
Hess, G.G.; Lampe, F.W.; Sommer, L.H.,
An electron impact study of ionization and dissociation of trimethylsilanes,
J. Am. Chem. Soc., 1965, 87, 5327. [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]
Khvostenko, Zykov, et al., 1981
Khvostenko, V.I.; Zykov, B.G.; Yuriev, V.P.; Mironov, V.F.; Kovel'zon, G.I.; Panasenko, A.A.; Sheludyakov, V.D.; Gailyunas, I.A.,
Study of d(π)-p(π) interaction in vinyl- and alkylsilicon-containing compounds by photoelectron spectroscopy,
J. Organomet. Chem., 1981, 218, 155. [all data]
Bock and Ensslin, 1971
Bock, H.; Ensslin, W.,
Bond-bond interaction in polysilanes,
Angew. Chem. Int. Ed. Engl., 1971, 10, 404. [all data]
Band, Davidson, et al., Commun. 1967
Band, S.J.; Davidson, I.M.T.; Lambert, C.A.; Stephenson, I.L.,
Bond dissociation energies and heats of formation of trimethylsilyl compounds,
Chem., Commun. 1967, 723. [all data]
Connor, Finney, et al., 1966
Connor, J.A.; Finney, G.; Leigh, G.J.; Haszeldine, R.N.; Robinson, P.J.; Sedgwick, R.D.; Simmons, R.F.,
Bond dissociation energies in organosilicon compounds,
Chem. Commun., 1966, 178. [all data]
Hess, Lampe, et al., 1964
Hess, G.G.; Lampe, F.W.; Sommer, L.H.,
Bond dissociation energies and ion energetics in organosilicon compounds by electron impact,
J. Am. Chem. Soc., 1964, 86, 3174. [all data]
Dallos, Sisak, et al., 2000
Dallos, A.; Sisak, A.; Kulcsár, Z.; Kováts, E.,
Pair-wise interactions by gas chromatography VII. Interaction free enthalpies of solutes with secondary alcohol groups,
J. Chromatogr. A, 2000, 904, 2, 211-242, https://doi.org/10.1016/S0021-9673(00)00908-0
. [all data]
Reddy, Dutoit, et al., 1992
Reddy, K.S.; Dutoit, J.-Cl.; Kovats, E. sz.,
Pair-wise interactions by gas chromatography. I. Interaction free enthalpies of solutes with non-associated primary alcohol groups,
J. Chromatogr., 1992, 609, 1-2, 229-259, https://doi.org/10.1016/0021-9673(92)80167-S
. [all data]
Szekely, Nefedov, et al., 1967
Szekely, T.; Nefedov, O.M.; Garzo, G.; Shiryayav, V.I.; Fritz, D.,
Gas chromatographic investigation of the thermal decomposition of polydimethylsilylene,
Acta Chim. Acad. Sci. Hung., 1967, 54, 3-4, 241-254. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, References
- Symbols used in this document:
AE Appearance energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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