Silane, tetraphenyl-
- Formula: C24H20Si
- Molecular weight: 336.5011
- IUPAC Standard InChI: InChI=1S/C24H20Si/c1-5-13-21(14-6-1)25(22-15-7-2-8-16-22,23-17-9-3-10-18-23)24-19-11-4-12-20-24/h1-20H
- IUPAC Standard InChIKey: JLAVCPKULITDHO-UHFFFAOYSA-N
- CAS Registry Number: 1048-08-4
- 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: Tetraphenylsilane; Tetraphenylsilicon
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Condensed phase thermochemistry data
Go To: Top, Phase change 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: Eugene S. Domalski and Elizabeth D. Hearing
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 94.60 | 298.5 | Smith and Andrews, 1931 | T = 102 to 346 K. Value is unsmoothed experimental datum. |
Phase change data
Go To: Top, Condensed phase thermochemistry 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 as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 505.15 | K | N/A | Hance and Hauser, 1952 | Uncertainty assigned by TRC = 2. K; TRC |
| Tfus | 507.15 | K | N/A | Smith and Andrews, 1931, 2 | Uncertainty assigned by TRC = 2. K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔsubH° | 37.50 ± 0.41 | kcal/mol | N/A | Steele, 1978 | AC |
| ΔsubH° | 35.71 ± 0.41 | kcal/mol | ME,TE | Calle and Kana'an, 1974 | AC |
Reduced pressure boiling point
| Tboil (K) | Pressure (atm) | Reference | Comment |
|---|---|---|---|
| 501. | 0.004 | PCR Inc., 1990 | BS |
Enthalpy of sublimation
| ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 12.2 | 456. | A | Stephenson and Malanowski, 1987 | Based on data from 428. to 484. K.; AC |
| 12.2 | 428. to 489. | MG | McCauley and Smith, 1973 | AC |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Smith and Andrews, 1931
Smith, R.H.; Andrews, D.H.,
Thermal energy studies. II. Phenyl derivatives of metals,
J. Am. Chem. Soc., 1931, 53, 3661-3667. [all data]
Hance and Hauser, 1952
Hance, C.R.; Hauser, C.R.,
Cleavage of Tetraphenylsiland and Benzyltriphenylsilane by Potassium Amide,
J. Am. Chem. Soc., 1952, 74, 1856. [all data]
Smith and Andrews, 1931, 2
Smith, R.H.; Andrews, D.H.,
Thermal Energy Studies II. Phenyl Derivatives of Metals,
J. Am. Chem. Soc., 1931, 53, 3661-7. [all data]
Steele, 1978
Steele, W.V.,
The standard enthalpy of formation of tetraphenylsilane and the Ph«58872»M mean bond-dissociation energies of the Group IV elements,
The Journal of Chemical Thermodynamics, 1978, 10, 5, 445-452, https://doi.org/10.1016/0021-9614(78)90092-7
. [all data]
Calle and Kana'an, 1974
Calle, Luz M.; Kana'an, Adli S.,
Enthalpies and entropies of sublimation of tetraphenyl silane and hexaphenyl disilane. The bond dissociation energies of Si«58872»C and Si«58872»Si,
The Journal of Chemical Thermodynamics, 1974, 6, 10, 935-942, https://doi.org/10.1016/0021-9614(74)90214-6
. [all data]
PCR Inc., 1990
PCR Inc.,
Research Chemicals Catalog 1990-1991, PCR Inc., Gainesville, FL, 1990, 1. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
McCauley and Smith, 1973
McCauley, James A.; Smith, Norman O.,
Sublimation pressures of solid solutions IV. (C6H5)4Si + (C6H5)4Sn, (C6H5)4Si + (C6H5)4Pb, and NH4Br + KBr,
The Journal of Chemical Thermodynamics, 1973, 5, 1, 31-40, https://doi.org/10.1016/S0021-9614(73)80060-6
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid Tboil Boiling point Tfus Fusion (melting) point ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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