Abstract
The reaction of Cp 2Ti(AsF 6) 2 ( 1) in liquid sulfur dioxide with HCN, ICN, AsMe 3, and As 2Me 4 afforded the new cationic titanocene complexes [Cp 2TiHCN) 2][AsF 6] 2 ( 2), [Cp 2Ti(ICN) 2][AsF 6] 2 ( 3), [Cp 2Ti(AsMe 3) 2][AsF 6] 2 ( 4), and [Cp 2Ti(As 2Me 4)] 2[AsF 6] 4 ( 5) (Cp = η 5-C 5H 5, Me = CH 3). All compounds have been characterized by 1H NMR and IR spectroscopy. The dynamic 1H NMR spectrum of 5 shows a reversible temperature dependence due to the ring inversion of the six-membered TiAsAsTiAsAs heterocycle.
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