Collect. Czech. Chem. Commun. 1982, 47, 3405-3411

Effects of structure and concentration on ionic association in alkali alkoxide-conjugate acid solutions: Reluctance to formation of ion-pair aggregates

Václav Pechanec, Oldřich Kocián and Jiří Závada

Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6


Degrees of ionic association, napp, were ebulliometrically determined in 0.06-0.6 molal region for eighteen RO(-)M(+)-ROH base-conjugate acid combinations (R = H, CH3, C2H5, n-C3H7, i-C3H7, t-C4H9; M(+) = Li(+), Na(+), K(+)) and found to range between the extremes 0.5 and 0.4. Presence of ion-pair aggregates (napp > 1) was established only in two of the examined combinations (i-C3H7OLi-i-C3H7OH and t-C4H9OLi-t-C4H9OH).