
%0 Journal Article
%A Green, RW 
%A Alexander, PW 
%T Schiff base equilibria. II. Beryllium complexes of N-n-butylsalicylideneimine and the hydrolysis of the Be<sup>2+</sup> ion
%J Australian Journal of Chemistry
%D 1965/05/01
%V 18
%N 5
%P 651-658
%K 
%R https://doi.org/10.1071/CH9650651
%U https://www.publish.csiro.au/paper/CH9650651 
%X The Schiff base, N-n-butylsalicylideneimine, extracts more than 99.8% beryllium into toluene from dilute aqueous solution. The distribution of beryllium has been studied in the pH range 5-13 and is discussed in terms of the several complex equilibria in aqueous solution. The stability constants of the complexes formed between beryllium and the Schiff base are log &#946;1 11.1 and log &#946;2 20.4, and the distribution coefficient of the bis complex is 550. Over most of the pH range, hydrolysis of the Be2+ ion competes with complex formation and provides a means of measuring the hydrolysis constants. They are for the reactions: Be(H2O)42+ &#8596; 2H+ + Be(H2O)2(OH)2, log*&#946;2 - 13.65; Be(H2O)42+ &#8596; 3H+ + Be(H2O)(OH)3-, log*&#946;3 -24.11. 
