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5. Conclusion and perspective
Half-sandwich
constrained-geometry
titanacarboranes
[r: :g
g1 5-(OCH2)(R2NCH2)C2B9H9]Ti(NR2) (R = Me, Et) have two
different functional sidearms: one strongly bonds to the Ti atom
preserving the integrity of the constrained-geometry unit, and
the other (amine) coordinates reversibly to the Ti atom stabilizing
the reactive intermediate. Such a unique structural feature makes
these complexes as robust and efficient catalysts for hydroamina-
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This work was supported by Grants from the Research Grants
Council of the Hong Kong Special Administration Region (Project
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