Premium
Crystal Structures of the Lithium Cryptates of Two Macrobicyclic Ligands Containing Pyridine, Bipyridine, and Biisoquinoline Units
Author(s) -
Cesario Michèle,
Guilhem Jean,
Pascard Claudine,
Anklam Elke,
Lehn JeanMarie,
Pietraszkiewicz Marek
Publication year - 1991
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19910740602
Subject(s) - chemistry , pyridine , lithium (medication) , crystal structure , ligand (biochemistry) , crystal (programming language) , crystallography , bipyridine , stereochemistry , medicinal chemistry , receptor , medicine , biochemistry , computer science , programming language , endocrinology
The crystal structures of the LiBr complexes of two macrobicyclic ligands, [py.py.bpy] 1 and [py.biqi.biqi] 2 , have been determined. They confirm the cryptate nature of these species. In 3 , the Li + cation is bound in the shallow cavity of a ligand of flattened shape, whereas in 4 , it is buried inside the macrobicycle and surrounded by its three bridges.