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Compounds with a Boron–Carbon Triple Bond
Author(s) -
Allwohn Jürgen,
Pilz Monika,
Hunold Ralf,
Massa Werner,
Berndt Armin
Publication year - 1990
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199010321
Subject(s) - triple bond , deprotonation , boron , chemistry , crystallography , resonance (particle physics) , carbon fibers , computational chemistry , materials science , double bond , organic chemistry , physics , atomic physics , composite number , ion , composite material
Resonance structure B is not significantly involved in the π‐etectron distribution of the deprotonated borylborataalkynes 1 , as shown by structure analysis and NMR spectroscopic data. This finding, together with the fact that the B sp C sp distance found for 1b · 2Et 2 O is in exact agreement with that calculated for HB ⊖ CH, supports the presence of a true BC triple bond in 1 , as shown in A. a , R 1 = 2,4,6‐Me 3 C 6 H 2 ; b , R 1 = 2,3,5,6‐Me 4 C 6 H; R 2 = Me 3 Si.