Thermochemical study of the structures of 1,2-, 2,1-, and 4,1-nitrosonaphthols

Abstract

Dame, for computer results. Research assistantships from the Atomic Energy Commission and the National Aeronautics and Space Administration are gratefully acknowledged by W. A. J. :, = ,+ 1.515 (µ)1'2 1 + 1.6 (µ)1'2 RESULTS AND DISCUSSIONThe calculated values of the ionization constants are listed in Table I. The precision f the pKa values is the standard deviation of five sets of two data points for each titration. In the case of the solutions in which KC1 was added, the constants are concentrationand ionic strengthdependent, and are not thermodynamic values. Since the Debye-Hiickel law does not hold in solutions of high ionic strength, no corrections were attempted.The results of the titration at 28.2°C. in which no KC1was added (Ka = 5.90 x 10~2 and Ka = 2.93 x 1CT3) are similar to those reported by Charton (5) at 25°C. (7.07 X 10-2 and 3.55 x 10 3). Apparently, the early work of Ashton and Partington was not accurate.