Silane, difluorodimethyl-
- Formula: C2H6F2Si
- Molecular weight: 96.1513
- IUPAC Standard InChIKey: XRRDNAZMVAXXQP-UHFFFAOYSA-N
- CAS Registry Number: 353-66-2
- 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: Difluorodimethylsilane; Dimethyldifluorosilane; (CH3)2SiF2
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Reaction thermochemistry data
Go To: Top, 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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
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: CN- + C2H6F2Si = (CN- • C2H6F2Si)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 16.8 ± 1.0 | kcal/mol | IMRE | Larson, Szulejko, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 30. | cal/mol*K | N/A | Larson, Szulejko, et al., 1988 | gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M |
C2H5F2Si- + =
By formula: C2H5F2Si- + H+ = C2H6F2Si
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 380.0 ± 4.6 | kcal/mol | G+TS | Allison and McMahon, 1990 | gas phase; Between PhCH3, HCF3; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 371.5 ± 4.5 | kcal/mol | IMRB | Allison and McMahon, 1990 | gas phase; Between PhCH3, HCF3; B |
By formula: F- + C2H6F2Si = (F- • C2H6F2Si)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 55.5 ± 5.0 | kcal/mol | IMRB | Murphy and Beauchamp, 1977 | gas phase; Fluoride Affinity: SF4<Me2SiF2<Me3B; B |
References
Go To: Top, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Larson, Szulejko, et al., 1988
Larson, J.W.; Szulejko, J.E.; McMahon, T.B.,
Gas Phase Lewis Acid-Base Interactions. An Experimental Determination of Cyanide Binding Energies From Ion Cyclotron Resonance and High-Pressure Mass Spectrometric Equilibrium Measurements.,
J. Am. Chem. Soc., 1988, 110, 23, 7604, https://doi.org/10.1021/ja00231a004
. [all data]
Payzant, Yamdagni, et al., 1971
Payzant, J.D.; Yamdagni, R.; Kebarle, P.,
Hydration of CN-, NO2-, NO3-, and HO- in the gas phase,
Can. J. Chem., 1971, 49, 3308. [all data]
Allison and McMahon, 1990
Allison, C.E.; McMahon, T.B.,
How Strong is the Si=C Bond in Fluoro- and Methyl Substituted Silaethylenes? An Experimental Determination of Pi Bond Strengths,
J. Am. Chem. Soc., 1990, 112, 5, 1672, https://doi.org/10.1021/ja00161a002
. [all data]
Murphy and Beauchamp, 1977
Murphy, M.K.; Beauchamp, J.L.,
Methyl and Fluorine Substituent Effects on the Gas Phase Lewis Acidities of Silanes by ICR Spectroscopy,
J. Am. Chem. Soc., 1977, 99, 15, 4992, https://doi.org/10.1021/ja00457a017
. [all data]
Notes
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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