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Front Cover: Enantiopure versus Racemic Mixture in Reversible, Two‐Step, Single‐Crystal‐to‐Single‐Crystal Transformations of Copper(II) Complexes (Chem. Eur. J. 34/2018)
Author(s) -
Ene Cristian D.,
Maxim Catalin,
Rouzières Mathieu,
Clérac Rodolphe,
Avarvari Narcis,
Andruh Marius
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201802441
Subject(s) - enantiopure drug , single crystal , crystallography , chemistry , copper , schiff base , racemic mixture , ligand (biochemistry) , crystal (programming language) , stereochemistry , organic chemistry , enantioselective synthesis , enantiomer , catalysis , biochemistry , receptor , computer science , programming language
Single‐crystal‐to‐single‐crystal : Pairs of homochiral single chains constructed from copper(II) ions and an enantiopure Schiff‐base ligand undergo a two‐step single‐crystal‐to‐single‐crystal transformation, resulting in helicoidal double chains. The conversion of the single chains into the double chains is accompanied by the drastic change of magnetic properties, from weak to strong antiferromagnetic interactions. If the racemic Schiff base is employed, single crystals containing a racemic mixture of mononuclear complexes are obtained, which also undergo a SCSC transformation, leading to a racemic mixture of chiral single chains. More information can be found in the Full Paper by C. Maxim, M. Andruh, et al. on page 8569.