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First Structure of a Mixed Organosodium/Lithium Alkoxide Compound: Model for a Superbase
Author(s) -
Harder Sjoerd,
Streitwieser Andrew
Publication year - 1993
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.199310661
Subject(s) - superbase , alkoxide , tetramer , lithium (medication) , tetragonal crystal system , alkali metal , chemistry , crystallography , molecule , lithium metal , inorganic chemistry , stereochemistry , crystal structure , organic chemistry , medicine , electrode , electrolyte , enzyme , endocrinology , catalysis
LiO interactions dominate the structure of 1 , a molecule that contains the MC and LiO functionalities suspected to play a role in superbases involving RLi and R′OM (M = Na, K, Rb, Cs). Compound 1 forms a tmeda‐coordinated tetramer with a central Li 4 O 4 cube, and its O atoms have tetragonal‐pyramidal coordination. This structure offers a possible explanation of the activation of organolithium compounds by alkali metal alkoxides.