hafnium dioxide
- Formula: HfO2
- Molecular weight: 210.49
- IUPAC Standard InChI: InChI=1S/Hf.2O/q+4;2*-2
- IUPAC Standard InChIKey: WIHZLLGSGQNAGK-UHFFFAOYSA-N
- CAS Registry Number: 12055-23-1
- Chemical structure:
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Gas phase ion energetics data
Go To: Top, Vibrational and/or electronic energy levels, NIST Free Links, 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: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
| IE (eV) | Method | Reference |
|---|---|---|
| 9.4 ± 0.2 | EI | Rauh and Ackermann, 1974 |
Vibrational and/or electronic energy levels
Go To: Top, Gas phase ion energetics data, NIST Free Links, 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: Marilyn E. Jacox
State: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a1 | 1 | Sym. stretch | 883.4 | Ar | IR | Chertihin and Andrews, 1995 | |
| b2 | 3 | Asym. stretch | 814.0 | Ar | IR | Chertihin and Andrews, 1995 | |
Additional references: Jacox, 1998, page 176; Lesarri, Suenram, et al., 2002
References
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Chertihin and Andrews, 1995
Chertihin, G.V.; Andrews, L.,
Reactions of Laser Ablated Titanium, Zirconium, and Hafnium Atoms with Oxygen Molecules in Condensing Argon,
J. Phys. Chem., 1995, 99, 17, 6356, https://doi.org/10.1021/j100017a015
. [all data]
Jacox, 1998
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement A,
J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017
. [all data]
Lesarri, Suenram, et al., 2002
Lesarri, A.; Suenram, R.D.; Brugh, D.,
Rotational spectrum of jet-cooled HfO[sub 2] and HfO,
J. Chem. Phys., 2002, 117, 21, 9651, https://doi.org/10.1063/1.1516797
. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, NIST Free Links, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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