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Z. Naturforsch. 2013, 68b, 551 – 556
doi:10.5560/ZNB.2013-3069
Synthesis and Coordination Chemistry of a Tris(benzene-o-dithiolato)-functionalized Ligand as a Siderophore Analog
Susanne Ruppel, Christian Schulte to Brinke and F. Ekkehardt Hahn
Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 30, D-48149 Münster, Germany
Reprint requests to Prof. Dr. F. Ekkehardt Hahn. Fax: +49-251-8333018. E-mail: fehahn@uni-muenster.de
Received February 27, 2013 / published online Juli 2, 2013
Dedicated to Professor Heinrich Nöth on the occasion of his 85th birthday
As a siderophore analog, the tripodal tris(benzene-o-dithiol)-functionalized ligand H6-5, has been synthesized in four steps including the reaction of 1,3,5-(triaminomethyl)-2,4,6-triethylbenzene and 2,3-bis(isopropylmercapto)benzoyl chloride followed by removal of the S-protecting groups. Reaction of compound H6-5 with [Ti(OPr)4] in the presence of (NEt4)Cl leads to the formation of complex (NEt4)2[Ti(5)] featuring three bidentate benzene-o-dithiolato donors from one ligand coordinated to the metal center. An X-ray diffraction structure analysis with crystals of (NEt4)2[Ti(5)]·DMF has shown that the coordination geometry at the metal center is best described as distorted trigonal-prismatic with a twist angle of ϕav = 18.5.
Key words: Tripods, Benzene-o-dithiolato Ligand, X-Ray Diffraction, Titanium
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