1,1-Dimethyl-1-silacyclobutane

• Formula: C₅H₁₂Si
• Molecular weight: 100.2343
• IUPAC Standard InChI: InChI=1S/C5H12Si/c1-6(2)4-3-5-6/h3-5H2,1-2H3 Copy

  
• IUPAC Standard InChIKey: YQQFFTNDQFUNHB-UHFFFAOYSA-N Copy
• CAS Registry Number: 2295-12-7
• 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: Silacyclobutane, 1,1-dimethyl-; Cyclotrimethylenedimethylsilane; 1,1-Dimethylsilacyclobutane
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Ion clustering data
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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Condensed phase thermochemistry 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: Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of solid

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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis

Enthalpy of vaporization

Entropy of vaporization

Enthalpy of fusion

Entropy of fusion

Reaction thermochemistry 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: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

 +  = ( • )

By formula: F^- + C₅H₁₂Si = (F^- • C₅H₁₂Si)

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:
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

Appearance energy determinations

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

References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, 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.

Guseinov, Karasharli, et al., 1975
Guseinov, Z.A.; Karasharli, K.A.; Dzhafarov, O.I.; Nurullaev, G.G.; Nametkin, N.S.; Gusel'nikov, L.E.; Volnina, F.A.; Burdasov, E.N.; Vdovin, V.M., Thermodynamic parameters of some cyclic and bridging carbosilanes, Dokl.Akad. Nauk, 1975, SSSR 222, 1369-1372. [all data]

Guseinov, Karasharli, et al., 1975, 2
Guseinov, A.Z.; Karasharli, K.A.; Dzhafarov, O.I.; Nurullaev, G.G.; Nametkin, N.S.; Gusel'nikov, L.E.; Volnina, E.A.; Burdasov, E.N.; Vdovin, V.N., Dokl. Akad. Nauk SSSR, 1975, 222, 1369. [all data]

Bessareb and Martynov, 1974
Bessareb, N.A.; Martynov, Y.M., Russ. J. Phys. Chem., 1974, 48, 1547. [all data]

Sullivan, DePuy, et al., 1981
Sullivan, S.A.; DePuy, C.H.; Damrauer, R., Gas Phase Reactions of Cyclic Silanes, J. Am. Chem. Soc., 1981, 103, 2, 480, https://doi.org/10.1021/ja00392a048 . [all data]

Dyke, Josland, et al., 1982
Dyke, J.M.; Josland, G.D.; Lewis, R.A.; Morris, A., Improved first ionization potential of the dimethylsilaethylene molecule obtained with high-temperature photoelectron spectroscopy, J. Phys. Chem., 1982, 86, 2913. [all data]

Koenig and McKenna, 1981
Koenig, T.; McKenna, W., First ionization band of 1,1-dimethylsilaethylene by transient photoelectron spectroscopy, J. Am. Chem. Soc., 1981, 103, 1212. [all data]

Gusel'nikov, Volkova, et al., 1981
Gusel'nikov, L.E.; Volkova, V.V.; Tarasenko, N.A.; Tishenkov, A.A.; Zaikin, V.G.; Eremina, E.I.; Nametkin, N.S., Deuterium labelling and thermochemical studies of dissociative ionization of methyl substituted monosilacyclobutanes. Ring expansion in the molecular ion of 1,1,3-trimethylΣ-1-silacyclobutane, Org. Mass Spectrom., 1981, 16, 242. [all data]

Pitt, Habercom, et al., 1968
Pitt, C.G.; Habercom, M.S.; Bursey, M.M.; Rogerson, P.F., The electronic absorption and ionization potentials of carbosilanes. The question of 1,3(d-d) interaction in the excited state, J. Organometal. Chem., 1968, 15, 359. [all data]

Cundy, Lappert, et al., 1973
Cundy, C.S.; Lappert, M.F.; Pedley, J.B.; Schmidt, W.; Wilkins, B.T., Bonding studies of compounds of boron and the Group IV elements. XI. Photoelectron spectra of strained cyclic organosilicon compounds, J. Organomet. Chem., 1973, 51, 99. [all data]

Gusel'nikov and Nametkin, 1979
Gusel'nikov, L.E.; Nametkin, N.S., 1,1-dimethyl-1-silaethylene. Heat of formation, ionization potential and the energy of the silicon-carbon π-bond, J. Organomet. Chem., 1979, 169, 155. [all data]

Notes

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• Symbols used in this document:
  

  AE	Appearance energy
  Cp,solid	Constant pressure heat capacity of solid
  S°solid,1 bar	Entropy of solid at standard conditions (1 bar)
  Ttriple	Triple point temperature
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions
  ΔvapS	Entropy of vaporization

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