DESYMMETRIZATION OF NAPHTHALENE MOIETY AS A RESULT OF DIFFERENT SUBSTITUTIONS AT PERI POSITIONS

Changes of geometrical parameters of naphthalene rings are discussed i n terms of variation of hybridization, electronegativity and charge at nitrogen atoms attached at peri positions (1,8-substitution) to the b asic naphthalene moiety.Hydrogen bond interactions are suggested based on residual electron density distributions and their structural impli cations are discussed. Differences in conjugation of NH2 group and pyr idinium moiety with naphthalene rings are sufficiently significant to show differences of shapes in the perpendicular section of C(ar)-N bon ds.