R. Szymanski et S. Penczek, COMPLEXATION OF SODIUM-CATIONS BY POLYMERIC ESTERS OF PHOSPHORIC-ACID, Die Makromolekulare Chemie, 194(6), 1993, pp. 1645-1651
The complexation of sodium tetraphenylborate by poly(2-methoxy-2-oxo-
1,3,2-dioxaphospholane) and by poly(2-methoxy-2-oxo- 1,3,2-dioxaphosph
orinane) in methanol solutions was studied using a previously derived
relationship between solution composition and the width of a Na-23 NMR
signal. The results indicate that the equilibrium constants of comple
xation of sodium cations by both phosphoric-ester polymers are of the
same order of magnitude as the corresponding equilibrium constants of
complexation of sodium cations by poly(oxyethylene).