Bis(trimethylsilyl)acetylene
- Formula: C8H18Si2
- Molecular weight: 170.3995
- IUPAC Standard InChI: InChI=1S/C8H18Si2/c1-9(2,3)7-8-10(4,5)6/h1-6H3
- IUPAC Standard InChIKey: ZDWYFWIBTZJGOR-UHFFFAOYSA-N
- CAS Registry Number: 14630-40-1
- 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: 1,2-Bis(trimethylsilyl)acetylene; Silane, 1,2-ethynediylbis[trimethyl-; 2,5-Disilahex-3-yne, 2,2,5,5-tetramethyl-; Acetylene, bis(trimethylsilyl)-; Bis(trimethylsilyl)ethyne; 1,2-Bis(trimethylsilyl)ethyne; Silane, 1,1'-(1,2-ethynediyl)bis[1,1,1-trimethyl-
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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: Robert L. Brown and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 409. to 410. | K | N/A | Farchan Laboratories, 1990 | |
| Tboil | 406. to 408. | K | N/A | PCR Inc., 1990 | |
| Tboil | 409. to 410. | K | N/A | Buckingham and Donaghy, 1982 |
Gas phase ion energetics data
Go To: Top, 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 as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to C8H18Si2+ (ion structure unspecified)
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 9.2 | PE | Matsumoto, Akaiwa, et al., 1986 | LBLHLM |
| 9.63 | PE | Matsumoto, Akaiwa, et al., 1986 | Vertical value; LBLHLM |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| C8H18Si2+ | 9.63 ± 0.04 | ? | EI | Bock and Seidl, 1968 | RDSH |
References
Go To: Top, Phase change data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Farchan Laboratories, 1990
Farchan Laboratories,
Research Chemicals Catalog, Farchan Laboratories, Gainesville, FL, 1990, 91. [all data]
PCR Inc., 1990
PCR Inc.,
Research Chemicals Catalog 1990-1991, PCR Inc., Gainesville, FL, 1990, 1. [all data]
Buckingham and Donaghy, 1982
Buckingham, J.; Donaghy, S.M.,
Dictionary of Organic Compounds: Fifth Edition, Chapman and Hall, New York, 1982, 1. [all data]
Matsumoto, Akaiwa, et al., 1986
Matsumoto, H.; Akaiwa, K.; Nagai, Y.; Ohno, K.; Imai, K.; Masuda, S.; Harada, Y.,
Analysis of stereochemical properties of molecular orbitals of (trimethylsilyl)acetylenes by penning ionization electron spectroscopy,
Organometallics, 1986, 5, 1526. [all data]
Bock and Seidl, 1968
Bock, H.; Seidl, H.,
d-Orbital effects in siliconsubstituted π-electron systems. Part XII. Some spectroscopic properties of alkyl and silyl acetylenes and polyacetylenes,
J. Chem. Soc. B, 1968, 1158. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy Tboil Boiling point - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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