Titanium dioxide (anatase)
- Formula: O2Ti
- Molecular weight: 79.866
- IUPAC Standard InChI: InChI=1S/2O.Ti
- IUPAC Standard InChIKey: GWEVSGVZZGPLCZ-UHFFFAOYSA-N
- CAS Registry Number: 13463-67-7
- 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: Titanium dioxide (rutile); titanium dioxide
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Gas 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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -305.43 | kJ/mol | Review | Chase, 1998 | Data last reviewed in December, 1973 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 260.14 | J/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1973 |
Gas 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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 4000. to 6000. |
|---|---|
| A | 63.82818 |
| B | -4.418178 |
| C | 1.080707 |
| D | -0.058816 |
| E | -5.216235 |
| F | -336.0739 |
| G | 323.0094 |
| H | -305.4324 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1973 |
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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -894.05 | kJ/mol | Review | Chase, 1998 | Data last reviewed in December, 1973 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 72.32 | J/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1973 |
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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 2130. to 4000. |
|---|---|
| A | 100.4160 |
| B | 5.991573×10-8 |
| C | -1.796728×10-8 |
| D | 1.839876×10-9 |
| E | 3.592186×10-8 |
| F | -955.6758 |
| G | 145.6358 |
| H | -894.0539 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1973 |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, IR Spectrum, 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:
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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 9.5 ± 0.5 | EI | Balducci, Gigli, et al., 1985 | LBLHLM |
| 9. ± 0.5 | EI | Balducci, Gigli, et al., 1985, 2 | LBLHLM |
| 10.4 ± 1.0 | EI | Banon, Chatillon, et al., 1982 | LBLHLM |
| 9.5 ± 0.1 | EI | Hildenbrand, 1976 | LLK |
| 10.2 ± 0.2 | EI | Rauh and Ackermann, 1974 | LLK |
| 11.56 ± 0.14 | EI | Wu and Wahlbeck, 1972 | LLK |
| 8.5 ± 0.5 | EI | Balducci, De Maria, et al., 1972 | LLK |
| 9. ± 0.2 | EI | Mesnard, Uzan, et al., 1966 | RDSH |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| OTi+ | 13.7 ± 0.5 | O | EI | Banon, Chatillon, et al., 1982 | LBLHLM |
| TiO+ | 8. ± 0.5 | O | EI | Mesnard, Uzan, et al., 1966 | RDSH |
| Ti+ | 14.6 ± 0.5 | O2 | EI | Banon, Chatillon, et al., 1982 | LBLHLM |
| Ti+ | 20. ± 0.2 | ? | EI | Mesnard, Uzan, et al., 1966 | RDSH |
IR Spectrum
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Data compiled by: Coblentz Society, Inc.
- SOLID (0.3 mg / 300 mg CsI DISC); BECKMAN IR-12 (GRATING); DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS)
4, 4 cm-1 resolution
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, IR Spectrum, 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]
Balducci, Gigli, et al., 1985
Balducci, G.; Gigli, G.; Guido, M.,
Identification and stability determinations for the gaseous titanium oxide molecules Ti2O3 and Ti2O4,
J. Chem. Phys., 1985, 83, 1913. [all data]
Balducci, Gigli, et al., 1985, 2
Balducci, G.; Gigli, G.; Guido, M.,
Mass spectrometric study of the thermochemistry of gaseous EuTiO3 and TiO2,
J. Chem. Phys., 1985, 83, 1909. [all data]
Banon, Chatillon, et al., 1982
Banon, S.; Chatillon, C.; Allibert, M.,
High temperature mass spectrometric study of ionization and fragmentation of TiO and TiO2 gas under electron impact,
High Temp. Sci., 1982, 15, 17. [all data]
Hildenbrand, 1976
Hildenbrand, D.L.,
Mass spectrometric studies of the thermochemistry of gaseous TiO and TiO2,
Chem. Phys. Lett., 1976, 44, 281. [all data]
Rauh and Ackermann, 1974
Rauh, E.G.; Ackermann, R.J.,
First ionization potentials of some refractory oxide vapors,
J. Chem. Phys., 1974, 60, 1396. [all data]
Wu and Wahlbeck, 1972
Wu, H.Y.; Wahlbeck, P.G.,
Vapor pressures of TiO(g) in equilibrium with Ti2O3(s) Ti3O5(s, β); dissociation energy of TiO(g),
J. Chem. Phys., 1972, 56, 4534. [all data]
Balducci, De Maria, et al., 1972
Balducci, G.; De Maria, G.; Guido, M.; Piacente, V.,
Dissociation energy of TiO and TiO2 gaseous molecules,
J. Chem. Phys., 1972, 56, 3422. [all data]
Mesnard, Uzan, et al., 1966
Mesnard, G.; Uzan, R.; Cabaud, B.,
Etude au spectrometre de masse des produits d'evaporation du bioxyde de titane et du titanate de baryum,
Rev. Phys. Appl., 1966, 1, 123. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, IR Spectrum, References
- Symbols used in this document:
AE Appearance energy S°gas,1 bar Entropy of gas at standard conditions (1 bar) S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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