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Bicyclo[3.2.1]octa‐2,6‐dienyllithium
Author(s) -
Hertkorn Norbert,
Köhler Frank H.,
Müller Gerhard,
Reber Gabriele
Publication year - 1986
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.198604681
Subject(s) - bicyclic molecule , ethylenediamine , lithium (medication) , adduct , ion , chemistry , crystallography , stereochemistry , medicinal chemistry , inorganic chemistry , organic chemistry , medicine , endocrinology
The first isolable, crystalline compound containing the bishomoaromatic anion bicyclo[3.2.1]octa‐2,6‐dienide, the tetramethyl‐ethylenediamine adduct of the title compound 1 , has C s symmetry in solution. In crystalline 1 , however, the lithium is bonded unsymmetrically to all five sp 2 C‐atoms. The C 2 ‐ and C 3 ‐bridges are surprisingly close to each other, as is required for bishomoaromaticity; lithium has the unusual coordiation number 7.