Silane, tetraethyl-
- Formula: C8H20Si
- Molecular weight: 144.3299
- IUPAC Standard InChIKey: VCZQFJFZMMALHB-UHFFFAOYSA-N
- CAS Registry Number: 631-36-7
- 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: Tetraethylsilane; Tetraethylsilicon; (C2H5)4Si
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Condensed phase thermochemistry data
Go To: Top, Phase change data, Gas phase ion energetics data, 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 compiled by: Eugene S. Domalski and Elizabeth D. Hearing
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
297.7 | 298.15 | N/A | T = 315 to 595 K. |
298.1 | 298.15 | Maslova, Rabinovich, et al., 1972 | T = 60 to 300 K. |
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 426. | K | N/A | Sommer, Goldberg, et al., 1946 | Uncertainty assigned by TRC = 5. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 189.36 | K | N/A | Staveley, Warren, et al., 1954 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 190.6 | K | N/A | Maslova, Rabinovich, et al., 1972, 2 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 606. | K | N/A | Steele, Chirico, et al., 1991 | Uncertainty assigned by TRC = 0.4 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 24.00 | bar | N/A | Steele, Chirico, et al., 1991 | Uncertainty assigned by TRC = 0.20 bar; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 1.70 | mol/l | N/A | Steele, Chirico, et al., 1991 | Uncertainty assigned by TRC = 0.02 mol/l; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 39.0 ± 0.7 | kJ/mol | C | Voronkov, Baryshok, et al., 1988 | AC |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
43.3 | 287. | Stull, 1947 | Based on data from 272. to 426. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
272. to 426. | 4.35089 | 1682.102 | -39.324 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
13.410 | 190.6 | Maslova, Rabinovich, et al., 1972 | DH |
13.012 | 189.36 | Staveley, Warren, et al., 1954, 2 | DH |
13.01 | 189.4 | Domalski and Hearing, 1990 | AC |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
70.4 | 190.6 | Maslova, Rabinovich, et al., 1972 | DH |
68.70 | 189.36 | Staveley, Warren, et al., 1954, 2 | DH |
Gas phase ion energetics data
Go To: Top, Condensed phase thermochemistry data, Phase change data, 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 compiled as indicated in comments:
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
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.9 | PE | Potzinger, Ritter, et al., 1975 | LLK |
10.5 | EI | deRidder and Dijkstra, 1967 | RDSH |
9.8 | PE | Beltram, Fehlner, et al., 1980 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C2H5Si+ | 19.4 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
C2H7Si+ | 11.8 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
C4H11Si+ | 12.5 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
C6H15Si+ | 10.0 ± 0.1 | C2H5 | EI | Potzinger, Ritter, et al., 1975 | LLK |
C6H15Si+ | 11.0 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
SiH+ | 26.8 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
SiH2+ | 25.7 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
SiH3+ | 20.6 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
Si+ | 28.0 | ? | EI | deRidder and Dijkstra, 1967 | RDSH |
Mass spectrum (electron ionization)
Go To: Top, Condensed phase thermochemistry data, Phase change data, 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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Due to licensing restrictions, this spectrum cannot be downloaded.
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 | Japan AIST/NIMC Database- Spectrum MS-IW-7605 |
NIST MS number | 227699 |
References
Go To: Top, Condensed phase thermochemistry data, Phase change 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.
Maslova, Rabinovich, et al., 1972
Maslova, V.A.; Rabinovich, I.B.; Nistoalov, V.P.; Faminskaya, L.A.,
Specific heat and phase transitions of some alkyl compounds of silicon, germanium, and tin,
Tr. Khim. Khim. Tekhnol., 1972, (2), 44-50. [all data]
Sommer, Goldberg, et al., 1946
Sommer, L.H.; Goldberg, G.M.; Derfman, E.; Whitmore, F.C.,
Organisilicaon Compounds V. β-Elimination Involving Silicon,
J. Am. Chem. Soc., 1946, 68, 1083. [all data]
Staveley, Warren, et al., 1954
Staveley, L.A.K.; Warren, J.B.; Paget, H.P.; Dowrick, D.J.,
Some Thermodynamic Properties of Compounds of the Formula MX4 II. Tetraalkyl Compounds,
J. Chem. Soc., 1954, 1954, 1992. [all data]
Maslova, Rabinovich, et al., 1972, 2
Maslova, V.A.; Rabinovich, I.B.; Nistoalov, V.P.; Faminskaya, L.A.,
Specific heat and phase transition of some alkyl compounds of silicon, germanium, and tin,
Tr. Khim. Khim. Tekhnol., 1972, 1972, 44. [all data]
Steele, Chirico, et al., 1991
Steele, W.V.; Chirico, R.D.; Nguyen, A.; Hossenlopp, I.A.; Smith, N.K.,
DIPPR Project 871: determination of ideal-gas enthalpies of formation for key compounds: the 1989 project results
in DIPPR Data Ser. 1, 1991. [all data]
Voronkov, Baryshok, et al., 1988
Voronkov, M.G.; Baryshok, V.P.; Klyuchnikov, V.A.; Danilova, T.F.; Pepekin, V.I.; Korchagina, A.N.; Khudobin, Yu.I.,
Thermochemistry of organosilicon compounds,
Journal of Organometallic Chemistry, 1988, 345, 1-2, 27-38, https://doi.org/10.1016/0022-328X(88)80231-6
. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Staveley, Warren, et al., 1954, 2
Staveley, L.A.K.; Warren, J.B.; Paget, H.P.; Dowrick, D.J.,
Some thermodynamic properties of compounds of the formula MX4. Part II. Tetra-alkyl compounds, 1954, J. [all data]
Domalski and Hearing, 1990
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase Volume II,
J. Phys. Chem. Ref. Data, 1990, 19, 4, 881, https://doi.org/10.1063/1.555876
. [all data]
Potzinger, Ritter, et al., 1975
Potzinger, P.; Ritter, A.; Krause, J.,
Massenspektrometrische Bestimmung von Bindungsenergien in siliciumorganischen Verbindungen,
Z. Naturforsch. A:, 1975, 30, 347. [all data]
deRidder and Dijkstra, 1967
deRidder, J.J.; Dijkstra, G.,
Mass spectra of the tetramethyl and tetraethyl compounds of carbon, silicon, germanium, tin and lead,
Rec. Trav. Chim., 1967, 86, 737. [all data]
Beltram, Fehlner, et al., 1980
Beltram, G.; Fehlner, T.P.; Mochida, K.; Kochi, J.K.,
UV photoelectron spectra of group IV alkyl hydrides,
J. Electron Spectrosc. Relat. Phenom., 1980, 18, 153. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), References
- Symbols used in this document:
AE Appearance energy Cp,liquid Constant pressure heat capacity of liquid Pc Critical pressure Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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