Salts of Tris(pentafluoroethyl)silylchalcogenolates [Si(C2F5)3E]− with E = S, Se, and Te: Synthesis, Structure, and Reactivity

• Published in: Inorganic chemistry 2021-10, Vol.60 (20), p.15112-15117
• Main Authors: Tiessen, Natalia, Schwarze, Nico, Stammler, Hans-Georg, Neumann, Beate, Hoge, Berthold
• Format: Article
• Language: English
• ISSN: 0020-1669; 1520-510X
• DOI: 10.1021/acs.inorgchem.1c02476

Unlike silanolates [SiR3O]− (R = alkyl, aryl), which have been intensely studied, the heavier derivatives [SiR3E]− (E = S, Se, Te) have been much less examined. Among such species, virtually nothing is known about perfluoroalkyl-substituted silylchalcogenolates. In this contribution, a convenient synthesis of tris­(pentafluoroethyl)­silylchalcogenolate salts [{(Et2N)3PN}3PN­(H) t Bu]­[Si­(C2F5)3E] (E = S, Se, Te; t Bu = tert-butyl) is presented. All representatives were isolated and fully characterized by multinuclear NMR spectroscopy, IR spectroscopy, mass spectrometry, elemental analysis, and X-ray diffraction studies. Furthermore, first reactivity studies of these novel species toward selected metal halide complexes were performed. In this course, metal complexes [HgPh­{SSi­(C2F5)3}] (2) and [Au­(PPh3)­{SSi­(C2F5)3}] (3) were isolated and characterized.