Gi. Borodkin et al., INTERACTION OF ANISOLE AND THIOANISOLE WITH THE NITROSONIUM CATION - PI-COMPLEX VS N-COMPLEX FORMATION, Perkin transactions. 2, (6), 1995, pp. 1029-1030
H-1, C-13 and N-15 NMR studies and the results of MINDO/3 calculations
show the interaction between anisole, thioanisole and the nitrosonium
cation tot result in the formation of pi- and n-complexes, respective
ly.