| Abstract
| - Treatment of diisobutylaluminum hydridewith 3,5-disubstituted pyrazoles in 2:1 stoichiometryaffords the bridging hydride complexes [(μ,η1:η1-R2pz)(AliBu2)2(μ-H)]. A theoretical study of the reaction of[(μ,η1:η1-R2pz)(AliBu2)2(μ-H)] with methanol predictsthat the reaction proceeds by way of an intermediatecontaining a strong dihydrogen bond, suggesting thatdihydrogen bonding is an important feature of thereactivity of organoaluminum hydrides.
- Treatment of diisobutylaluminum hydride with 3,5-disubstituted pyrazoles in 2:1 stoichiometry affords the bridging hydride complexes [(μ,η1:η1-R2pz)(AliBu2)2(μ-H)]. These complexes undergo protonation and insertion reactions exclusively at the hydride. A theoretical study of the reaction of [(μ,η1:η1-R2pz)(AliBu2)2(μ-H)] with methanol predicts that the reaction proceeds by way of an intermediate containing a strong dihydrogen bond, suggesting that dihydrogen bonding is an important feature of the reactivity of organoaluminum hydrides.
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