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Selective dilithiation of [Ti(η(5)-C5H5)(η(8)-C8H8)] and subsequent conversion into neutral and cationic ansa-complexes.

Selective dimetalation of a sandwich complex featuring the cyclooctatetraene ligand has been accomplished for the first time. The isolation of the dilithiated species 1 subsequently enabled the isolation of a paramagnetic [2]stannatitanoarenophane (2) via salt elimination reaction. Chemical oxidation resulted in the formation of a rare example of a cationic ansa-complex (3).