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Dilithium Acepentalenediide: An Unusual Dimer of Contact Ion Triplets with Bowl‐Shaped Dianions
Author(s) -
Haag Rainer,
Fleischer Roland,
Stalke Dietmar,
de Meijere Armin
Publication year - 1995
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.199514921
Subject(s) - dilithium , methyllithium , dimer , ion , crystallography , crystal structure , chemistry , stereochemistry , organic chemistry , deprotonation
Pure 4,7‐bis(trimethylstannyl)dihydroacepentalene 1 can be transformed cleanly into dilithium acepentalenediide 2 by treatment with methyllithium. In the crystal 2 adopts an interesting dimeric structure in which the convex sides of the two bowl‐shaped dianionic fragments face each other.