Symmetry 2010, 2(4), 1745-1762; doi:10.3390/sym2041745
Review

Polyanionic Hexagons: X6n(X = Si, Ge)

Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai, 981-8555, Japan
Received: 16 August 2010; in revised form: 7 September 2010 / Accepted: 27 September 2010 / Published: 30 September 2010
(This article belongs to the Special Issue Aromaticity and Molecular Symmetry)
PDF Full-text Download PDF Full-Text [293 KB, Updated Version, uploaded 1 October 2010 09:34 CEST]
The original version is still available [331 KB, uploaded 30 September 2010 15:07 CEST]
Abstract: 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 (CH2)6 and dissimilar to aromatic D6h-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 calculated by us to have D6h symmetry and to be aromatic. We summarize here our main findings and the background needed to reach them, and propose a synthetically accessible molecule.
Keywords: aromaticity; density-functional-theory calculations; Wade’s rule; Zintl phases; silicon clusters; germanium clusters

Article Statistics

Load and display the download statistics.

Citations to this Article

Cite This Article

MDPI and ACS Style

Takahashi, M. Polyanionic Hexagons: X6n(X = Si, Ge). Symmetry 2010, 2, 1745-1762.

AMA Style

Takahashi M. Polyanionic Hexagons: X6n(X = Si, Ge). Symmetry. 2010; 2(4):1745-1762.

Chicago/Turabian Style

Takahashi, Masae. 2010. "Polyanionic Hexagons: X6n(X = Si, Ge)." Symmetry 2, no. 4: 1745-1762.

Symmetry EISSN 2073-8994 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert