Premium
Derivate des Imidazols, VI. Stabile Carben‐Borane
Author(s) -
Kuhn Norbert,
Henkel Gerald,
Kratz Thomas,
Kreutzberg Jörg,
Boese Roland,
Maulitz Andreas H.
Publication year - 1993
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19931260913
Subject(s) - chemistry , boranes , carbene , borane , conformational isomerism , adduct , imidazole , ab initio , medicinal chemistry , stereochemistry , double bond , crystallography , computational chemistry , molecule , polymer chemistry , catalysis , organic chemistry , boron
Imidazole Derivatives, VI [1] . — Stable Carbene Boranes Stable imidazol‐2‐ylidene—borane adducts 8 and 9 are obtained from 1,3,4,5‐tetraalkylimidazol‐2‐ylidenes 7 and Me 2 S BH 3 or Et 2 O BF 3 . An X‐ray structure analysis of 8b has been performed. An ab initio calculation [MP2(fu)/6–31G ** ] reveals a low energy difference between two rotamers. The bond orders of the cyclic bonds imply only a minor interaction between the N—C—N and the C—C fragment.