Key points are not available for this paper at this time.
No! Calculations of the relative stabilities of Si6H6 isomers give a completely different picture from what one is used to in carbon chemistry. Hexasilaprismane 1 is markedly more stable than hexasilabenzene 2, although the resonance energy of the π-electron system of 2 is only about 30% less than that of benzene.
Sax et al. (Tue,) studied this question.