1,1,3,3-Tetraethyl-5,5-diphenylcylotrisiloxane
- Formula: C20H30O3Si3
- Molecular weight: 402.7069
- IUPAC Standard InChI: InChI=1S/C20H30O3Si3/c1-5-24(6-2)21-25(7-3,8-4)23-26(22-24,19-15-11-9-12-16-19)20-17-13-10-14-18-20/h9-18H,5-8H2,1-4H3
- IUPAC Standard InChIKey: WFJNZPXZHWTQMF-UHFFFAOYSA-N
- CAS Registry Number: 108543-32-4
- 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. - Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°liquid | 170.0 | cal/mol*K | N/A | Dzhafarov and Kuliev, 1987 |
Constant pressure heat capacity of liquid
| Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 150.5 | 298.15 | Dzhafarov and Kuliev, 1987 | T = 5 to 315 K. |
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:
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos
Enthalpy of fusion
| ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 4.3915 | 279.082 | Dzhafarov and Kuliev, 1987 | DH |
| 4.391 | 279.1 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
| ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 15.78 | 279.082 | Dzhafarov and Kuliev, 1987 | DH |
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.
Dzhafarov and Kuliev, 1987
Dzhafarov, O.I.; Kuliev, A.M.,
Specific heat and thermodynamic properties of 1,1,3,3-tetraethyl-5,5-diphenylcyclotrisiloxane at 5-315 K,
Zhur. Fiz. Khim., 1987, 61, 606-610. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.