Electron delocalizahon and “aromatic” behavior in cyclic polysilanes

Abstract

The cyclic permethylpolysilanes (Me2Si)n and other cyclic alkylpolysilanes have some properties which resemble those of aromatic hydrocarbons: they have strong ultraviolet absorption bands, form electron delocalized anion- and cation-adicals, give charge-transfer complexes with pi acceptors, and show substituent effects on disubstitution. The nature of chemical bonding responsible for these effects in polysilanes is discussed. © 1982 IUPAC