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Bishomoaromatic 1,2,4‐Triboracyclopentane Dianions: Strong Three‐Center, Two‐Electron Bonds between Three Boron Atoms
Author(s) -
Scheschkewitz David,
Ghaffari Abolfazl,
Amseis Peter,
Unverzagt Markus,
Subramanian Govindan,
Hofmann Matthias,
Schleyer Paul von Ragué,
Schaefer III Henry F.,
Geiseler Gertraud,
Massa Werner,
Berndt Armin
Publication year - 2000
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/(sici)1521-3773(20000403)39:7<1272::aid-anie1272>3.0.co;2-z
Subject(s) - boron , electron , electron deficiency , center (category theory) , chemistry , crystallography , atomic physics , physics , organic chemistry , nuclear physics
Much greater than the bishomoaromaticity for the archetype 1 of all bishomoarenes is that of 1,2,4‐triboracyclopentane dianions 2 , although the skeletons of 2 are isoelectronic with that of the experimentally unknown monocyclic prototype 3 . Donor substituents R, capable of annihilating the homoaromaticity of 1 (as well as that of 3 ), have essentially no effect on the homoaromaticity of 2 . Dur=2,3,5,6‐tetramethylphenyl; R=C 6 H 5 , OC 2 H 5 , CH 3 , NEt 2 .