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PubMed · 8633051

A rigid trans-spanning dinitrile ligand.

K D Shimizu·J Rebek
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Abstract

A rigid dinitrile ligand was synthesized from two xanthene units condensed to a naphthalene-1,4,5,8-diimide spacer. The rigidity and C shape of the ligand gave exclusively trans complexes with Pd(II), Ag(I), and Au(I). Evidence for complexation, coordination geometry, and stoichiometry was provided by a combination of 1H NMR, 19F NMR, and IR spectroscopy. The AuBF4 and PdCl2 complexes were shown to have a 1:1 (metal-to-ligand) stoichiometry and the AgBF4 complex was shown to have a 1:2 stoichiometry in solution. The preorganization of the dinitrile ligand resulted in complexes much more stable than their monodentate counterparts.

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GoldIndicators and ReagentsIsomerismKineticsLigandsMagnetic Resonance SpectroscopyMetalsMolecular StructureNitrilesPalladiumSilverSpectrophotometry, InfraredXanthenesJournal ArticleResearch Support, U.S. Gov't, P.H.S.

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K D Shimizu, J Rebek. 1996-04-30. A rigid trans-spanning dinitrile ligand.. https://doi.org/10.1073/pnas.93.9.4257

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