Aluminum hydroxide
- Formula: AlHO
- Molecular weight: 43.9889
- CAS Registry Number: 20768-67-6
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Gas phase ion energetics 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.
Data compiled by: John E. Bartmess
De-protonation reactions
AlO- + = HAlO
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 367.9 ± 9.6 | kcal/mol | D-EA | Desai, Wu, et al., 1996 | gas phase |
| ΔrH° | 359.6 ± 4.1 | kcal/mol | G+TS | Damrauer, Krempp, et al., 1991 | gas phase; Between CF3CH2OH, pyrrole. Calculations imply that the acid is AlOH, not HAlO |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 360.7 ± 9.7 | kcal/mol | H-TS | Desai, Wu, et al., 1996 | gas phase |
| ΔrG° | 352.5 ± 4.0 | kcal/mol | IMRB | Damrauer, Krempp, et al., 1991 | gas phase; Between CF3CH2OH, pyrrole. Calculations imply that the acid is AlOH, not HAlO |
Vibrational and/or electronic energy levels
Go To: Top, Gas phase ion energetics 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: Marilyn E. Jacox
State: B
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 41747 | gas | B-X | 230 | 240 | Pilgrim, Robbins, et al., 1993 | ||
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| 760.3 | gas | MPI | Pilgrim, Robbins, et al., 1993 | ||||
| 581.0 | gas | MPI | Pilgrim, Robbins, et al., 1993 | ||||
State: A
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 40073 | gas | A-X | 227 | 255 | Pilgrim, Robbins, et al., 1993 | ||
| Kr | A-X | 245 | 252 | Douglas, Hauge, et al., 1982 | |||
| Douglas, Hauge, et al., 1983 | |||||||
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| OH stretch | 3258.4 | T | gas | MPI | Pilgrim, Robbins, et al., 1993 | ||
| 807.6 | gas | MPI | Pilgrim, Robbins, et al., 1993 | ||||
| 636.6 | gas | MPI | Pilgrim, Robbins, et al., 1993 | ||||
State: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| Σ+ | 1 | OH stretch | 3787.0 | Ar | IR | Hauge, Kauffman, et al., 1980 Wang and Andrews, 2007 | |
| 3 | AlO stretch | 895 | gas | MPI | Pilgrim, Robbins, et al., 1993 | ||
| 3 | AlO stretch | 810.7 | Ar | IR | Hauge, Kauffman, et al., 1980 Wang and Andrews, 2007 | ||
Additional references: Jacox, 1994, page 36; Jacox, 1998, page 143; Apponi, Barclay, et al., 1993
Notes
| T | Tentative assignment or approximate value |
| o | Energy separation between the v = 0 levels of the excited and electronic ground states. |
References
Go To: Top, Gas phase ion energetics 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.
Desai, Wu, et al., 1996
Desai, S.R.; Wu, H.; Wang, L.-S.,
Vibrationally Resolved Photoelectron Spectroscopy of AlO- and AlO2-,
Int. J. Mass Spectrom. Ion Proc., 1996, 159, 1-3, 75, https://doi.org/10.1016/S0168-1176(96)04443-6
. [all data]
Damrauer, Krempp, et al., 1991
Damrauer, R.; Krempp, M.; Schmidt, M.W.; Gordon, M.S.,
Gas-Phase Chemistry of the Dimethylaluminum Oxide Ion and Related Aluminum Oxide Ions - Comparison of Reactivity with Siloxide Ions,
J. Am. Chem. Soc., 1991, 113, 7, 2393, https://doi.org/10.1021/ja00007a007
. [all data]
Pilgrim, Robbins, et al., 1993
Pilgrim, J.S.; Robbins, D.L.; Duncan, M.A.,
Photoionization electronic spectroscopy of AlOH,
Chem. Phys. Lett., 1993, 202, 3-4, 203, https://doi.org/10.1016/0009-2614(93)85266-Q
. [all data]
Douglas, Hauge, et al., 1982
Douglas, M.A.; Hauge, R.H.; Margrave, J.L.,
ACS Symposium Ser. 179, American Chemical Society, Washington, D. C., 1982. [all data]
Douglas, Hauge, et al., 1983
Douglas, M.A.; Hauge, R.H.; Margrave, J.L.,
J. Chem. Soc., 1983, Faraday Trans. 1 79, 1533. [all data]
Hauge, Kauffman, et al., 1980
Hauge, R.H.; Kauffman, J.W.; Margrave, J.L.,
Infrared matrix-isolation studies of the interactions and reactions of Group 3A metal atoms with water,
J. Am. Chem. Soc., 1980, 102, 19, 6005, https://doi.org/10.1021/ja00539a005
. [all data]
Wang and Andrews, 2007
Wang, X.; Andrews, L.,
Infrared Spectroscopic Observation of the Group 13 Metal Hydroxides, M(OH),
J. Phys. Chem. A, 2007, 111, 10, 1860, https://doi.org/10.1021/jp066390e
. [all data]
Jacox, 1994
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [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]
Apponi, Barclay, et al., 1993
Apponi, A.J.; Barclay, W.L., Jr.; Ziurys, L.M.,
The millimeter-wave spectrum of AlOH,
Astrophys. J., 1993, 414, L129, https://doi.org/10.1086/187013
. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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