The first example of a stable stannanetellone was synthesized and isolated by taking advantage of kinetic stabilization afforded by the combination of steric protecting groups, 2,6-bis[bis(trimethylsilyl)methyl]-4-[tris(trimethylsilyl)methyl]phenyl (Bbt) and 2,2″,4,4″-tetraisopropyl-m-terphenyl-2′-yl groups. The structural parameters and spectroscopic data of the isolated stannanetellone were systematically compared with those previously reported for the lighter congeners, i. e., the stannanethione and stannaneselone. Attempted synthesis of a stannanetellone by the reaction of dilithiostannane with tellurium dichloride is also described.
Acknowledgments
We thank Ms. Toshiko Hirano and Ms. Tomoko Terada of the Microanalytical Laboratory of the Institute for Chemical Research of Kyoto University for the elemental analyses and HRMS spectra. This work was partially supported by Grants-in-Aid for Creative Scientific Research (No. 17G0207), COE Research on Elements Science (No. 12CE2005), Scientific Research on Priority Area (A) (No. 14078213), the 21st Century COE on Kyoto University Alliance for Chemistry (Novel Organic Materials Creation & Transformation Project), and Nanotechnology Support Project from the Ministry of Education, Culture, Sports, Science, and Technology of Japan.
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