Disiloxane, hexamethyl-
- Formula: C6H18OSi2
- Molecular weight: 162.3775
- IUPAC Standard InChIKey: UQEAIHBTYFGYIE-UHFFFAOYSA-N
- CAS Registry Number: 107-46-0
- 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: Bis(trimethylsilyl) ether; Bis(trimethylsilyl) oxide; Fluka AG; Hexamethyldisiloxane; ((CH3)3Si)2O; Oxybis(trimethylsilane); Silane, oxybis(trimethyl)-; Dow corning 200/0.65; H7310; HMDSO; Belsil DM 0.65; Disiloxane, 1,1,1,3,3,3-hexamethyl-; KF 96L; NSC 43346; OS 10; SWS-F 221; DC 200 FLUID (Salt/Mix)
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Gas phase ion energetics data
Go To: Top, 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 846.4 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 816.2 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.6 ± 1.0 | EI | Seefeldt, Moller, et al., 1985 | LBLHLM |
9.64 ± 0.01 | PI | Molder, Pikver, et al., 1983 | LBLHLM |
9.59 ± 0.04 | EI | Hess, Lampe, et al., 1965 | RDSH |
9.88 | PE | Starzewski, Dieck, et al., 1974 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C3H9SiO+ | 21.8 ± 0.2 | ? | EI | Borossay, Csakvari, et al., 1971 | LLK |
C3H9Si+ | 15.4 ± 0.2 | ? | EI | Borossay, Csakvari, et al., 1971 | LLK |
C3H9Si+ | 15.36 ± 0.13 | ? | EI | Hess, Lampe, et al., 1965 | RDSH |
C5H15OSi2+ | 10.4 ± 0.2 | CH3 | EI | Seefeldt, Moller, et al., 1985 | LBLHLM |
C5H15OSi2+ | 10.20 ± 0.07 | CH3 | EI | Hess, Lampe, et al., 1965 | RDSH |
Mass spectrum (electron ionization)
Go To: Top, Gas phase ion energetics 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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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 | D.HENNEBERG, MAX-PLANCK INSTITUTE, MULHEIM, WEST GERMANY |
NIST MS number | 61595 |
References
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Seefeldt, Moller, et al., 1985
Seefeldt, R.; Moller, W.; Schmidt, M.,
Zur elektronenstossionisierung des hexamethyldisiloxans (HMDS),
Z. Phys. Chem. (Leipzig), 1985, 266, 797. [all data]
Molder, Pikver, et al., 1983
Molder, U.H.; Pikver, R.J.; Koppel, I.A.,
Photoelectron spectra of molecules. 2. Ethers,
Org. React. (N.Y. Engl. Transl.), 1983, 20, 208. [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]
Starzewski, Dieck, et al., 1974
Starzewski, K.A.O.; Dieck, H.T.; Bock, H.,
Photoelectron spectra molecular properties. XXIII. Photoelectron spectra of silicon-substituted ylidic systems,
J. Organomet. Chem., 1974, 65, 311. [all data]
Borossay, Csakvari, et al., 1971
Borossay, J.; Csakvari, B.; Szepes, L.,
Determination of bond energies of organic silicon compounds on the basis of appearance potentials,
Int. J. Mass Spectrom. Ion Phys., 1971, 7, 47. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), References
- Symbols used in this document:
AE Appearance energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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