KINETICS OF THE ACID AND ALKALINE-HYDROLYSIS OF MONOFLUOROPHOSPHITE

The kinetics of the acid and alkaline hydrolysis of monoflorophosphoro us acid has been studied by P-31 NMR and static pH titration over a wi de temperature range. The acid catalyzed hydrolysis has a rate constan t at 25-degrees-C equal to 0.35 dm3 mol-1 s-1 and an activation energy of 53 kJ while the alkaline hydrolysis has a rate constant of 4.6 dm3 mol-1 s-1 and an activation energy of 42 kJ. When the hydrogen in thi s compound is replaced by either fluorine or a hydroxyl group, the rat es of reaction decrease by two orders of magnitude. (C) 1994 John Wile y & Sons, Inc.