Polyanionic Hexagons: X6n– (X = Si, Ge)

Masae Takahashi
2010 Symmetry  
The paper reviews the polyanionic hexagons of silicon and germanium, focusing on aromaticity. The chair-like structures of hexasila-and hexagermabenzene are similar to a nonaromatic cyclohexane (CH 2 ) 6 and dissimilar to aromatic D 6h -symmetric benzene (CH) 6 , although silicon and germanium are in the same group of the periodic table as carbon. Recently, six-membered silicon and germanium rings with extra electrons instead of conventional substituents, such as alkyl, aryl, etc., were
more » ... etc., were calculated by us to have D 6h symmetry and to be aromatic. We summarize here our main findings and the background needed to reach them, and propose a synthetically accessible molecule.
doi:10.3390/sym2041745 fatcat:mtarmmxtyzdrfpjxteldguhi4q