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A Five‐Membered Ring with Three Negative Charges and Solvent‐Free Lithium Counterions
Author(s) -
Scheschkewitz David,
Menzel Matthias,
Hofmann Matthias,
Schleyer Paul von Ragué,
Geiseler Gertraud,
Massa Werner,
Harms Klaus,
Berndt Armin
Publication year - 1999
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(19991004)38:19<2936::aid-anie2936>3.0.co;2-9
Subject(s) - lithium (medication) , ring (chemistry) , counterion , ion , chemistry , solvent , crystallography , stereochemistry , medicinal chemistry , organic chemistry , medicine , endocrinology
Remarkably short distances to the ring plane are shown by the η 5 ‐bound lithium ions in the first compound with a triply negatively charged five‐membered ring, 1 , which was obtained by reduction of 2 with lithium. R=CH(SiMe 3 ) 2 , Dur=2,3,5,6‐tetramethylphenyl.