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
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