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Silane, tetraphenyl-

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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

Cp,solid (cal/mol*K) Temperature (K) Reference Comment
94.60298.5Smith and Andrews, 1931T = 102 to 346 K. Value is unsmoothed experimental datum.

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:
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
Tfus505.15KN/AHance and Hauser, 1952Uncertainty assigned by TRC = 2. K; TRC
Tfus507.15KN/ASmith and Andrews, 1931, 2Uncertainty assigned by TRC = 2. K; TRC
Quantity Value Units Method Reference Comment
Deltasub37.50 ± 0.41kcal/molN/ASteele, 1978AC
Deltasub35.71 ± 0.41kcal/molME,TECalle and Kana'an, 1974AC

Reduced pressure boiling point

Tboil (K) Pressure (atm) Reference Comment
501.0.004PCR Inc., 1990BS

Enthalpy of sublimation

DeltasubH (kcal/mol) Temperature (K) Method Reference Comment
12.2456.AStephenson and Malanowski, 1987Based on data from 428. - 484. K.; AC
12.2428. - 489.MGMcCauley and Smith, 1973AC

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


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

Ionization energy determinations

IE (eV) Method Reference Comment
8.6PENovak and Potts, 1984LBLHLM
8.50 ± 0.03PIRodionov, Potapov, et al., 1973LLK
8.65 ± 0.15EIGaidis, Briggs, et al., 1971LLK
8.96PENovak and Potts, 1984Vertical value; LBLHLM

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C18H15Si+9.7C6H5PIRodionov, Potapov, et al., 1973LLK
C18H15Si+9.93 ± 0.08C6H5EIGaidis, Briggs, et al., 1971LLK

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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IR 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

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Owner Copyright (C) 1987 by the Coblentz Society
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin DOW CORNING CORP.
Source reference COBLENTZ NO. 5592
Date 1965/11/04
Name(s) tetraphenylsilane
State SOLUTION (2% CCl4 FOR 3800-1300, 2% CS2 FOR 1300-650, AND 2% CCl4 FOR 650-250)
Instrument PERKIN-ELMER 521 (GRATING)
Instrument parameters FILTERS AT 3150, 2500, 2000, 1150, 700, 410. GRATING CHANGES: 2000, 630
Path length 0.010 CM, 0.011 CM, AND 0.010 CM
SPECTRAL CONTAMINATION DUE TO AN UNKNOWN AROUND 783 CM-1
Resolution 2
Melting point 237 C

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


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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Mass 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 Chemical Concepts
NIST MS number 221327

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References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), NIST Free Links, 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]

Novak and Potts, 1984
Novak, I.; Potts, A.W., The UV gas-phase photoelectron spectra of Group IVB tetraphenyl derivatives, J. Organomet. Chem., 1984, 262, 17. [all data]

Rodionov, Potapov, et al., 1973
Rodionov, A.N.; Potapov, V.K.; Rogozhin, K.L., Photoionization of certain aromatic heteroorganic compounds, High Energy Chem., 1973, 7, 249, In original 278. [all data]

Gaidis, Briggs, et al., 1971
Gaidis, J.M.; Briggs, P.R.; Shannon, T.W., Mass spectra of disilanes. Phenyl-silicon interaction and silicon-silicon bond strength, J. Phys. Chem., 1971, 75, 974. [all data]


Notes

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