silicon disulphide
- Formula: S2Si
- Molecular weight: 92.215
- IUPAC Standard InChI: InChI=1S/S2Si/c1-3-2
- IUPAC Standard InChIKey: KHDSWONFYIAAPE-UHFFFAOYSA-N
- CAS Registry Number: 13759-10-9
- 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: Silicon sulfide
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Solid Phase Heat Capacity (Shomate Equation)
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.
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. - 1363. |
|---|---|
| A | 18.07410 |
| B | 2.055891 |
| C | 0.385965 |
| D | -0.078254 |
| E | -0.018567 |
| F | -56.54799 |
| G | 40.33169 |
| H | -51.00010 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1972 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 298. | 18.51 | 19.18 | 19.20 | -0.00 |
| 300. | 18.52 | 19.31 | 19.20 | 0.03 |
| 400. | 18.84 | 24.68 | 19.93 | 1.90 |
| 500. | 19.11 | 28.91 | 21.32 | 3.80 |
| 600. | 19.38 | 32.42 | 22.88 | 5.72 |
| 700. | 19.64 | 35.43 | 24.47 | 7.67 |
| 800. | 19.90 | 38.07 | 26.01 | 9.65 |
| 900. | 20.16 | 40.43 | 27.48 | 11.65 |
| 1000. | 20.42 | 42.56 | 28.88 | 13.68 |
| 1100. | 20.68 | 44.52 | 30.22 | 15.74 |
| 1200. | 20.95 | 46.33 | 31.48 | 17.82 |
| 1300. | 21.22 | 48.02 | 32.69 | 19.93 |
References
Go To: Top, Solid Phase Heat Capacity (Shomate Equation), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Notes
Go To: Top, Solid Phase Heat Capacity (Shomate Equation), References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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