The distribution coefficient, logD, is a measure of the extent to which a compound is distributed between two phases, one of which is almost always aqueous. It is calculated as the ratio of the combined concentrations of both ionized and un-ionized forms of the compound present in each of the two phases. When dealing with non-ionizable compounds, logD = log P at any given pH value. To measure logD values, it is important to buffer the pH of the aqueous phase to a specific pH value so that the introduction of the compound doesn't change the pH significantly. The negative logD value is then calculated as the logarithmic ratio of the concentrations of the various forms of the solute measured experimentally, in one solvent, relative to the concentrations in the other solvent.Find the molecule's logD value in the negative scale.