om5b00310_si_001.pdf (1.85 MB)
An Isolable Anionic Gallabenzene: Synthesis and Characterization
journal contribution
posted on 2015-05-26, 00:00 authored by Taichi Nakamura, Katsunori Suzuki, Makoto YamashitaAn
anionic gallabenzene was isolated and structurally characterized
for the first time. The structure of gallabenzene in the crystal was
isostructural with that of the recently reported anionic aluminabenzene.
Structural parameters of the gallabenzene ring such as planar structure
and unsaturated bond character without bond alternation were consistent
with the structural criteria of the aromaticity. By DFT calculations
of the gallabenzene, in addition to the presence of an ambiphilic
contribution similar to the aluminum analogue, the plausible difference
of the electronic structures between the galla- and aluminabenzenes
due to the difference of electronegativity was also suggested.