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 Copy

  
• IUPAC Standard InChIKey: FFUAGWLWBBFQJT-UHFFFAOYSA-N Copy
• 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
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• Species with the same structure:
  • 1,1,1,3,3,3-hexamethyldisilazane
• 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:
  • Gas phase ion energetics data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Phase change data
  • Reaction thermochemistry data
• Options:
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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

De-protonation reactions

C₆H₁₈NSi₂^- +  =

By formula: C₆H₁₈NSi₂^- + H⁺ = C₆H₁₉NSi₂

IR Spectrum

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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: Coblentz Society, Inc.

Condensed Phase Spectrum

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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.

Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

Mass spectrum (electron ionization)

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

Gas Chromatography

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

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Normal alkane RI, non-polar column, custom temperature program

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References

Go To: Top, Gas phase ion energetics data, IR Spectrum, 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.

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]

Dutoit, 1991
Dutoit, J., Gas chromatographic retention behaviour of some solutes on structurally similar polar and non-polar stationary phases, J. Chromatogr., 1991, 555, 1-2, 191-204, https://doi.org/10.1016/S0021-9673(01)87179-X . [all data]

Zenkevich, 2001
Zenkevich, I.G., Encyclopedia of Chromatography. Derivatization of Hydroxy Compounds for GC Analysis, Marcel Dekker, Inc., New York - Basel, 2001, 237. [all data]

Notes

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• 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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