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Frontispiece: Metal‐Ion‐Induced Switch of Liquid‐Crystalline Orientation of Metallomacrocycles
Author(s) -
Kawano Shinichiro,
Hamazaki Takashi,
Suzuki Atsushi,
Kurahashi Kenshin,
Tanaka Kentaro
Publication year - 2016
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.201504864
Subject(s) - ethylenediamine , ligand (biochemistry) , ion , crystallography , metal , chemistry , metal ions in aqueous solution , phase (matter) , planar , stereochemistry , materials science , inorganic chemistry , organic chemistry , receptor , computer graphics (images) , computer science , biochemistry
Metallomacrocycles Tetranuclear metal complex formation of the macrocyclic ligand induced the orientation switch and phase transition of the liquid‐crystalline macrocycle depending on the metal ions. Even though Ni 2+ , Pd 2+ , and Cu 2+ ions form square‐planar complexes with a salen ligand ( N,N′ ‐bis(salicylidene)‐ethylenediamine) and difference of the ionic sizes among these metal ions are much smaller than the size of the macrocycle, the “atomic‐scale differences” among 2H + , Ni 2+ , Cu 2+ , and Pd 2+ when bound to the salen ligands induced a significant variability in the macroscopic liquid crystalline organization on the phase structure and transition behavior. For more details, see the Full Paper by K. Tanaka et al. on page 15674 ff.