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Disk Aromaticity of the Planar and Fluxional Anionic Boron Clusters B 20 −/2−
Author(s) -
Tai Truong Ba,
Ceulemans Arnout,
Nguyen Minh Tho
Publication year - 2012
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201104064
Subject(s) - boron , planarity testing , planar , aromaticity , cluster (spacecraft) , crystallography , ion , chemistry , atom (system on chip) , electron , center (category theory) , molecule , physics , nuclear physics , computer graphics (images) , organic chemistry , computer science , embedded system , programming language
The presence of excess electrons modifies the structural landscape and tends to extend the planarity of boron clusters. While the neutral B 20 is tubular, both the anion and dianion B 20 −/2− become planar. Geometrical features of the stable anions suggest the existence of a new type of cluster that is planar and doubly cyclic with one atom located at the center (see figure), as well as being fluxional.