Dinuclear Titanocene Chalcogenides as Sulfur and Selenium Transfer Reagents in Ring Synthesis¹

Ralf Steudel Institut für Anorganische und Analytische Chemie der Technischen Universität Berlin, Sekr. C 2, D - 1000, Berlin, 12, Fed. Rep. Germany

Detlef Jensen Institut für Anorganische und Analytische Chemie der Technischen Universität Berlin, Sekr. C 2, D - 1000, Berlin, 12, Fed. Rep. Germany

Maria Papavassiliou Institut für Anorganische und Analytische Chemie der Technischen Universität Berlin, Sekr. C 2, D - 1000, Berlin, 12, Fed. Rep. Germany

Abstract

The dinuclear titanocene complexes Cp₄Ti₂S₆, Cp₄Ti₂S₄ and Cp₄Ti₂Se₄ have been reacted with SCl₂, S₂Cl₂, and Se₂Cl₂, respectively. The reaction products are rings of type S_n (n = 6…20) and six-, seven- and eight-membered rings of type Se_x S_y, respectively, which have been characterized by HPLC, Raman and Se-NMR spectroscopy, as well as X-ray diffraction on single crystals.

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Dinuclear Titanocene Chalcogenides as Sulfur and Selenium Transfer Reagents in Ring Synthesis¹

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Dinuclear Titanocene Chalcogenides as Sulfur and Selenium Transfer Reagents in Ring Synthesis¹