titanium tetraiodide
- Formula: I4Ti
- Molecular weight: 555.485
- CAS Registry Number: 7720-83-4
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Condensed phase thermochemistry data
Go To: Top, Vibrational and/or electronic energy levels, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -83.248 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1968 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 74.532 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1968 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -89.799 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1968 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 58.831 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1968 |
Liquid Phase Heat Capacity (Shomate Equation)
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) | 428. to 1500. |
|---|---|
| A | 37.40010 |
| B | -6.847469×10-10 |
| C | 7.483631×10-10 |
| D | -2.582959×10-10 |
| E | -5.192840×10-12 |
| F | -94.40000 |
| G | 119.7920 |
| H | -83.24909 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1968 |
Solid Phase Heat Capacity (Shomate Equation)
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. to 379. | 379. to 428. |
|---|---|---|
| A | 17.40490 | 35.40010 |
| B | 41.91281 | -3.318201×10-12 |
| C | 0.000000 | 0.000000 |
| D | 0.000000 | 0.000000 |
| E | 0.011098 | -7.673860×10-13 |
| F | -96.81489 | -98.28411 |
| G | 67.46049 | 107.0200 |
| H | -89.80000 | -89.80000 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in December, 1968 | Data last reviewed in December, 1968 |
Vibrational and/or electronic energy levels
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 by: Takehiko Shimanouchi
Symmetry: Td Symmetry Number σ = 12
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| a1 | 1 | Sym str | 162 | D | ia | 162 VS p | solid solid | |||
| e | 2 | Deg deform | 51 | D | ia | 51 M dp | solid solid | |||
| f2 | 3 | Deg str | 322 | D | 322 VS | solid solid | 324 M dp | solid solid | ||
| f2 | 4 | Deg deform | 67 | D | 67 M | solid solid | ||||
Source: Shimanouchi, 1972
Notes
| VS | Very strong |
| M | Medium |
| ia | Inactive |
| p | Polarized |
| dp | Depolarized |
| D | 6~15 cm-1 uncertainty |
References
Go To: Top, Condensed phase thermochemistry data, Vibrational and/or electronic energy levels, 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]
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume II,
J. Phys. Chem. Ref. Data, 1972, 6, 3, 993-1102. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) S°solid Entropy of solid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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