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Formation of Rack‐ and Grid‐Type Metallosupramolecular Architectures and Generation of Molecular Motion by Reversible Uncoiling of Helical Ligand Strands
Author(s) -
Stadler AdrianMihail,
Kyritsakas Nathalie,
Graff Roland,
Lehn JeanMarie
Publication year - 2006
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200501202
Subject(s) - ligand (biochemistry) , supramolecular chemistry , chemistry , rack , crystallography , molecule , ion , stereochemistry , crystal structure , organic chemistry , receptor , biochemistry , political science , law
The interaction of appropriate metal ions (Pb II , Zn II ) with helical ligand strands, obtained by hydrazone polycondensation, generates polymetallic supramolecular architectures of rack and grid types, by uncoiling of the ligand. The interconversion between the helical free ligand and the linearly extended ligand in the complexes produces reversible ion‐induced, nanomechanical molecular motions of large amplitude. It has been integrated in an acid–base neutralisation fuelled process, which links the extension/contraction of the ligand strands to alternating changes in pH.