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Observation of the Highest Coordination Number in Planar Species: Decacoordinated Ta©B 10 − and Nb©B 10 − Anions
Author(s) -
Galeev Timur R.,
Romanescu Constantin,
Li WeiLi,
Wang LaiSheng,
Boldyrev Alexander I.
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201107880
Subject(s) - delocalized electron , atomic physics , coordination number , atom (system on chip) , electron , crystallography , molecular beam , chemistry , spectroscopy , ab initio quantum chemistry methods , electron spectroscopy , lone pair , x ray photoelectron spectroscopy , laser vaporization , ab initio , ion , physics , molecule , laser , nuclear magnetic resonance , organic chemistry , quantum mechanics , computer science , optics , embedded system
Molecular wheels : Decacoordinated molecular wheels, Ta©B 10 − (see picture) and Nb©B 10 − , showing the highest coordination number for the central atom in a planar environment at present, were produced in a laser‐vaporization supersonic molecular beam and characterized by photoelectron spectroscopy and ab initio calculations. The highly symmetric Ta©B 10 − and Nb©B 10 − anions are doubly aromatic with six delocalized π electrons and ten delocalized σ electrons.