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Z. Naturforsch. 2012,
67b, 1070 – 1080
doi:10.5560/ZNB.2012-0143
3,3′′-Bis(saccharin-6-ylmethyl)-1,1′:3′,1′′-terphenyl – Precursor of A New Tetradendate Bis-bridging Ligand
Institut für Organische Chemie I, Universität Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany
Reprint requests to Prof. Dr. Gerhard Maas. Fax: +49 731 5022803. E-mail:
gerhard.maas@uni-ulm.de
Received May 22, 2012 / published online October 8, 2012
Dedicated to Professor Heribert Offermanns on the occasion of his 75th birthday
The title compound (H2tpsac) was synthesized from 6-bromosaccharin and 3,3′′-bis(bromomethyl)-m-terphenyl. The ability of tpsac to serve as a tetradentate bis-bridging ligand was demonstrated by the formation of the dinuclear ruthenium(I,I) complexes [Ru2(CO)5(μ,μ-tpsac)]2, [Ru2(CO)4(μ,μ-tpsac)]n, [Ru2(CO)4(PPh3)2(μ,μ-tpsac)], and [Ru2(CO)5(PPh3)(μ,μ-tpsac)]. An X-ray crystal structure analysis of [Ru2(CO)4(PPh3)2(μ,μ-tpsac)] showed the head-to-tail (or 1,1) arrangement of the two saccharinate coordination sites.
Key words: Ruthenium Complexes, Saccharin, Ligands