Aluminum hydroxide

• Formula: AlHO
• Molecular weight: 43.9889
• CAS Registry Number: 20768-67-6
• Information on this page:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Vibrational and/or electronic energy levels
  • References
  • Notes
• Options:
  • Switch to SI units

Gas phase thermochemistry data

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, 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.

Gas Phase Heat Capacity (Shomate Equation)

C_p° = 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
    C_p = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, 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: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

AlO^- +  = HAlO

By formula: AlO^- + H⁺ = HAlO

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, 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: John E. Bartmess

De-protonation reactions

AlO^- +  = HAlO

By formula: AlO^- + H⁺ = HAlO

Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, 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:   B

State:   A

State:   X

Additional references: Jacox, 1994, page 36; Jacox, 1998, page 143; Apponi, Barclay, et al., 1993

Notes

References

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, 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.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

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 thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, NIST Free Links, References

• Symbols used in this document:
  

  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  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
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
• Customer support for NIST Standard Reference Data products.