Issue 8, 2002

Triple helicates and planar dimers arising from silver(i) coordination to directly linked bis-pyridylimine ligands

Abstract

Silver(I) coordination is investigated for three ligands of the pyridine-azine class, in which two pyridylimine binding units are linked directly through the imine nitrogen atoms. 1H NMR, X-ray analysis and ESI mass spectrometry indicate the presence of a range of metallo-supramolecular architectures in solution for all three ligands. X-Ray analysis confirms the solid state structures for a dinuclear triple helicate containing five-coordinate silver centres and a dinuclear dimer in which the silver ions are three-coordinate with long range stabilising interactions to trifluoromethanesulfonate counter-ions. A tetranuclear grid-like array is also implied as a component of the solution library. The five-coordinate silver(I) ions in the triple helicate result in a hetero-ligand system with two ligands oriented in a head-to-tail fashion. This is distinct from the triple helicates formed with octahedral metals such as an iron(II) triple helicate also crystallographically characterised herein.

Graphical abstract: Triple helicates and planar dimers arising from silver(i) coordination to directly linked bis-pyridylimine ligands

Supplementary files

Article information

Article type
Paper
Submitted
06 Nov 2001
Accepted
11 Feb 2002
First published
26 Mar 2002

J. Chem. Soc., Dalton Trans., 2002, 1635-1641

Triple helicates and planar dimers arising from silver(I) coordination to directly linked bis-pyridylimine ligands

J. Hamblin, A. Jackson, N. W. Alcock and M. J. Hannon, J. Chem. Soc., Dalton Trans., 2002, 1635 DOI: 10.1039/B110137B

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