Formation and Stability of New Hybrid Dichalcogena Dications(S-Se, S-Te and Se-Te) Bearing(2-Methylchalcogenomethyl)phenyl Skeleton
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Ethyl 2-(methylthiomethyl)phenyl selenide <B>1a</B>, telluride <B>1b</B> and ethyl 2-(methylselanylmethyl)phenyl telluride <B>1c</B> were prepared and treated with 1 equivalent of triflic anhydride (Tf<SUB>2</SUB>O) or 2 equivalents of nitrosonium salts (NOBF<SUB>4</SUB> or NOPF<SUB>6</SUB>) at low temperature to generate the corresponding selenathia, tellurathia and telluraselena dications(<B>2a, 2b</B> and <B>2c</B>), the structures of which were determined by NMR spectroscopy and <B>2b</B> was successfully isolated.
- Chemistry Letters
Chemistry Letters 1999(8), 723-724, 1999-08-05
The Chemical Society of Japan