Olate

The hydroxo groups then “olated,” resulting in the formation of large aggregates, eventually reaching colloidal size.

Whereas it is easy to calculate the amount of sodium hydroxide to be added to give a desired basicity in the chrome liquor, it is not possible to forecast what will be the actual basicity of the chrome salts which are present or the extent to which they will olate, for this depends upon such conditions as concentration, temperature, age of liquor, etc.

Compound 2 olates, as predicted by the hypothesis, and produces the diol [(pico)₂Cr(OH)₂Cr(pico)₂]⁴⁺. […] The well-known fundamental feature of olation, namely that only cis isomers olate and trans isomers do not, is explained, for the first time, by the proposed mechanism and is correlated with the structure of the reagents and products.