Charge distribution and reactivity of benzanthrenyl (1(-)) and 1-methy
l-1-hydroperylenyl anion (2(-)) are examined by means of semiempirical
calculations, NMR spectroscopy and reactions with electrophiles. High
est charge density and reactivity are located at position 7 of 1(-) an
d the comparable position 12b of 2(-). A small degree of reactivity is
located at positions 4 and 6 of 1(-), as shown by reactions. Generall
y, a good correlation between calculated charge distribution and charg
e distribution obtained from C-13 NMR is observed.