Abstract
Abstract The dinuclear titanocene complex Cp'4Ti2S4 (Cp'= CH3C5H4) reacts with CH3AsCl2 in a molar ratio of 1:1 to give the novel metallacycles CP'2Ti(μ-S2)2 AsCH3 and Cp'2Ti(μ-S)(μ-S3)AsCH3. Cpt2Ti(μ-Se)2AsCH3 is accessable by reaction of Cp'4Ti2Se4 with 1 equivalent of CH3AsCl2. With 2 equivalents of CH3AsCl2, five-membered rings (CH3As)2Ch3 rather than (CH3As)2Ch4 (Ch = S,Se) are obtained. The new phosphorus-containing titanacycle Cp'2Ti(μ-S)(μ-S3)P(S)C6H5 has been isolated from the reaction of Cp'4Ti2S4 with C6H5PCl2.
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