The authors hazard the guess that the oxolation of ol complexes would result in a loss of the reaction with neutral salts described in this paper.1931, Arthur W[aldorf] Thomas, Thomas H[illyer] Whitehead, “Ion Interchanges in Aluminum Oxychloride Hydrosols”, in Wilder D[wight] Bancroft, editor, The Journal of Physical Chemistry, volume XXXIV, Ithaca, N.Y.: The Editor, →ISSN, →OCLC, page 47:
The OH groups in the complex are not ol groups but rather hydroxy groups which can add hydrogen ions thereupon being converted into aquo groups.1962, Aleksander Abramovich Grinberg, translated by J. Rovtar Leach, “Polynuclear complex compounds”, in D. H. Busch, R. F. Trimble, Jr., editors, An Introduction to the Chemistry of Complex Compounds, London; Paris; Frankfurt: Pergamon Press; Reading, Mass.: Addison-Wesley Publishing Company, Inc., →LCCN, →OCLC, chapter X (Some Special Kinds of Complex Compounds), page 286:
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This species with the hydroxo or ol bridges can react in the presence of added base as follows: […]1974, David Nicholls, “Reactions in Aqueous Solution I: The Hexaquo Ion and its Acidity”, in Inorganic Complexes (Modern Chemistry Background Readers), London: John Murray, →ISBN, page 26:
In very acidic medium, the effect of gel coloring should disappear due to the condensation of the ol-group and the formation of oxy-polymers.2000 September 3, Y[uri] I. Sucharev, V. A. Potemkin, V. V. Avdin, The Effect of the Coloring Oxyhydrate Gels of Some Rare-Earth Elements (Y,Gd,La) (Science Direct Working Paper No S1574-0331(04)70333-1), →ISSN, →OCLC, page 7: