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Aromatic Boranes with Planar‐Tetracoordinate Boron Atoms and Very Short B−B Distances
Author(s) -
Präsang Carsten,
Hofmann Matthias,
Geiseler Gertraud,
Massa Werner,
Berndt Armin
Publication year - 2002
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 - 10.1002/1521-3773(20020503)41:9<1526::aid-anie1526>3.0.co;2-y
Subject(s) - tetracoordinate , boranes , boron , delocalized electron , pyridine , adduct , diamond , chemistry , aromaticity , electron delocalization , planar , crystallography , stereochemistry , medicinal chemistry , organic chemistry , molecule , computer science , computer graphics (images)
The diamond‐shaped tetraborane(6) 1 and its pyridine adduct 2 are the first aromatic compounds in which two π electrons display cyclic delocalization over four and three boron centers, respectively (see scheme). The two compounds contain the shortest B−B distances ever observed. R=SiMe 3 , Pyr=4‐ tert ‐butylpyridine.