Helical (isotactic) and syndiotactic silver(I) metallo-supramolecular coordination polymers assembled from a readily prepared bis-pyridylimine ligand containing a 1,5-naphthalene spacer
UNSPECIFIED. (2002) Helical (isotactic) and syndiotactic silver(I) metallo-supramolecular coordination polymers assembled from a readily prepared bis-pyridylimine ligand containing a 1,5-naphthalene spacer. CHEMISTRY-A EUROPEAN JOURNAL, 8 (21). pp. 4957-4964. ISSN 0947-6539Full text not available from this repository.
A ligand in which two pyridylimine binding, units are linked by a 1,5-naphthalene spacer is prepared and its silver(I) coordination chemistry investigated. In the solid state, a pair of C-H...N interactions between pyridylimine units link the free ligands into chain structures, with further C-H...N and some pi-stacking interactions linking these chains into a three-dimensional structure. The spacer constrains the ligand to dinucleate, and with silver(I) the metal coordinates to two pyridylimine units from two separate ligands and this leads to the formation of coordination polymers with a range of different anions, Different twisting motifs within the ligand control the tacticity of these coordination polymers and both isotactic, helical polymers and syndiotactic (achiral) polymers result. The core of the isotactic polymer strands contains two metallo-vectors and results in long-range ordering of the metal centres into a 2 x n grid arrangement. The solution behaviour indicates that exchange between the diastereomeric forms occurs. Since this must involve inversion at the metal centres, atactic species may also form a component of the solution library.
|Item Type:||Journal Article|
|Subjects:||Q Science > QD Chemistry|
|Journal or Publication Title:||CHEMISTRY-A EUROPEAN JOURNAL|
|Publisher:||WILEY-V C H VERLAG GMBH|
|Official Date:||4 November 2002|
|Number of Pages:||8|
|Page Range:||pp. 4957-4964|
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