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Supramolecular Circular Helicates Formed by Destabilisation of Supramolecular Dimers
Author(s) -
Hamblin Jacqueline,
Tuna Floriana,
Bunce Siona,
Childs Laura J.,
Jackson Alexander,
Errington William,
Alcock Nathaniel W.,
Nierengarten Helene,
Van Dorsselaer Alain,
LeizeWagner Emmanuelle,
Han Michael J.
Publication year - 2007
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.200700848
Subject(s) - supramolecular chemistry , trimer , crystallography , destabilisation , chemistry , nickel , octahedron , dimer , copper , coordination geometry , tetrahedron , metal , ligand (biochemistry) , supramolecular assembly , stereochemistry , crystal structure , molecule , organic chemistry , social psychology , psychology , hydrogen bond , receptor , biochemistry
The effect of changes in the angles at the connection points of linear/circular helicates is explored as a route to control the nuclearity and architecture of metallo‐supramolecular arrays. This effect is probed by changing the geometry of the metal centre used to assemble bis‐pyridylimine ligands that contain a 1,3‐bis(aminomethyl) benzene spacer group. Tetrahedral metal ions favour linear dimers, whereas octahedral nickel(II) predominantly gives a triangular circular helicate. Five‐coordinate copper(II) falls in the middle of these extremes and results in the formation of solvent‐dependent mixtures of dimer and trimer. The trinuclear, triangular, circular helicate structures, which result from coordination to copper(II) and nickel(II), are structurally characterised by X‐ray crystallography and reveal that the units can aggregate into hexagonal arrays that contain anion‐filled tube‐like channels in the solid state.