Z. Naturforsch. 2014, 69b, 1290 – 1298
A Novel Bifunctional Ligand for the Synthesis of Polynuclear Alkynyl Complexes
Caroline Wilhelmi, Maximilian Gaffga, Yu Sun, Gereon Niedner-Schatteburg, and Werner R. Thiel
Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Str. 52–54, 67663 Kaiserslautern, Germany
Reprint requests to Prof. Dr. Werner R. Thiel. Fax: ++49 631 2054676. E-mail: thiel@chemie.uni-kl.de
Received July 30, 2014 / published online December 19, 2014
Dedicated to Professor Hubert Schmidbaur on the occasion of his 80th birthday
The synthesis of 2-(1-(prop-2-yn-1-yl)-1H-pyrazol-3-yl)pyridine is presented. This ligand contains both, an alkynyl function being suitable for metal-carbon bond formation with electron-rich late transition metal sites, and a pyrazolylpyridine unit, which is well-known to undergo chelation reactions similar to 2,2′-bipyridine. This strategy allows building up polynuclear complexes with broad combinations of different metal sites. Two platinum alkynyl complexes were structurally characterized, and a trinuclear Ru2Pt complex was indentified by means of NMR spectroscopy and ESI mass spectrometry.
Key words: Alkynyl Ligand, Pyrazole, Pyridine, Platinum, Ruthenium
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