Kinetics of the pH??independent hydrolyses of 4??nitrophenyl chloroformate and 4??nitrophenyl heptafluorobutyrate in water??acetonitrile mixtures: consequences of …
Abstract The pH-independent hydrolyses of 4-nitrophenyl chloroformate, NPCF and 4- nitrophenyl heptafluorobutyrate, NPFB in aqueous acetonitrile were studied spectrophotometrically from 15 to 45 C. The binary solvent composition covers water concentrations from 2.349 to 53.207 and from 2.745 to 53.333 mol L− 1 for NPCF and NPFB, respectively. For both esters, the dependence of log (k obs), the observed rate constant, ...
