Hexamethyldisilazane
- Formula: C6H19NSi2
- Molecular weight: 161.3928
- IUPAC Standard InChI: InChI=1S/C6H19NSi2/c1-8(2,3)7-9(4,5)6/h7H,1-6H3
- IUPAC Standard InChIKey: FFUAGWLWBBFQJT-UHFFFAOYSA-N
- CAS Registry Number: 999-97-3
- 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. - Species with the same structure:
- Other names: Silanamine, 1,1,1-trimethyl-N-(trimethylsilyl)-; Disilazane, 1,1,1,3,3,3-hexamethyl-; Bis(trimethylsilyl)amine; 1,1,1,3,3,3-Hexamethyldisilazane; ((CH3)3Si)2NH; HMDS; OAP; Trimethyl-N-(trimethylsilyl)silanamine; 1,1,1-Trimethyl-N-(trimethylsilyl)silanamine; NSC 93895; SZ 6079; TSL 8802
- Information on this page:
- Other data available:
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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:
B - John E. Bartmess
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
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 8.55 | PE | Molder, Pikver, et al., 1983 | Vertical value; LBLHLM |
| 8.79 ± 0.05 | PE | Harris, Lappert, et al., 1976 | Vertical value; LLK |
| 8.66 | PE | Starzewski, Dieck, et al., 1974 | Vertical value; LLK |
De-protonation reactions
C6H18NSi2- + =
By formula: C6H18NSi2- + H+ = C6H19NSi2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 356.1 ± 2.1 | kcal/mol | G+TS | Grimm and Bartmess, 1992 | gas phase; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 349.0 ± 2.0 | kcal/mol | IMRE | Grimm and Bartmess, 1992 | gas phase; B |
References
Go To: Top, 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.
Molder, Pikver, et al., 1983
Molder, U.H.; Pikver, R.J.; Koppel, I.A.,
Photoelectron spectra of molecules. 4. Amines,
Org. React. Tartu, 1983, 20, 355. [all data]
Harris, Lappert, et al., 1976
Harris, D.H.; Lappert, M.F.; Pedley, J.B.; Sharp, G.J.,
Bonding studies of compounds of group 3-5 elements. Part XVIII. He(I) photoelectron spectra of bivalent homoleptic alkyls and amides, especially of group 4 elements, and of tin(II) chloride and bromide,
J. Chem. Soc. Dalton Trans., 1976, 945. [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]
Grimm and Bartmess, 1992
Grimm, D.T.; Bartmess, J.E.,
The Intrinsic (Gas Phase) Basicity of some Anions Commonly Used in Condensed-Phase Synthesis,
J. Am. Chem. Soc., 1992, 114, 4, 1227, https://doi.org/10.1021/ja00030a016
. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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