Synthesis and characterization of novel S,N and Se,N homodimetallic Ag(I)-complexes

Novel C2-symmetric doubly bidentate Se,N and S,N-ligands based on a readily available Tröger's base backbone were synthesized and fully characterized. Their coordination properties were studied in dinuclear Ag(I)-complexes employing (1)H, (77)Se and (1)H-(15)N HETCOR NMR spectroscopy as well as...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2012-06, Vol.41 (24), p.7415-7422
Main Authors: Cvengroš, Ján, Maennel, Elisabeth, Santschi, Nico
Format: Article
Language:English
Subjects:
Crystals
Diffraction
Ligands
NMR spectroscopy
Silver
Solid state
Solvents
X-rays
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Summary:Novel C2-symmetric doubly bidentate Se,N and S,N-ligands based on a readily available Tröger's base backbone were synthesized and fully characterized. Their coordination properties were studied in dinuclear Ag(I)-complexes employing (1)H, (77)Se and (1)H-(15)N HETCOR NMR spectroscopy as well as X-ray diffraction crystallography. In solution, a single ligand can accommodate two silver atoms by coordination to nitrogen and sulfur or selenium. The investigations in the solid state revealed the presence of a pentacoordinated silver atom (NSO(3) and N(3)Se(2) donor sets are influenced by the solvent employed during the crystallization). In the solid state, the Ag(I)-complex with the S,N-ligand 2b forms dimeric structures bridged by the two perchlorate counterions. The analogous Se,N-ligand 2c coordinates to Ag(I) and forms polymeric enantiomerically pure helices, although the crystal is racemic.
ISSN:1477-9226
1477-9234
DOI:10.1039/c2dt30509g