Additivity model study of EHT electron densities in some fluoro- and aza-substituted naphthalenes

It has been shown that a simple additivity model can be used quite successfully to predict EHT electron densities in a series of fluoro- and aza-substituted naphthalenes. The predicted electrondensities have been used to obtain good estimates of ¹H NMR chemical shifts in a series of aza-naphthalenes.