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|Section2= |Section3= }} Diisobutylaluminium hydride (DIBALH, DIBAL, DIBAL-H or DIBAH, ) is a reducing agent with the formula (''i''-Bu2AlH)2, where ''i''-Bu represents isobutyl (-CH2CH(CH3)2). This organoaluminium compound was investigated originally as a co-catalyst for the polymerization of alkenes. ==Properties== Like most organoaluminum compounds, the compound’s structure is probably more than that suggested by its empirical formula. A variety of techniques, not including X-ray crystallography, suggest that the compound exists as a dimer and a trimer, consisting of tetrahedral aluminium centers sharing bridging hydride ligands. Hydrides are small and, for aluminium derivatives, are highly basic, thus they bridge in preference to the alkyl groups. DIBALH can be prepared by heating triisobutylaluminium (itself a dimer) to induce beta-hydride elimination: :(''i''-Bu3Al)2 → (''i''-Bu2AlH)2 + 2 (CH3)2C=CH2 Although DIBALH can be purchased commercially as a colorless liquid, it is more commonly purchased and dispensed as a solution in an organic solvent such as toluene or hexane. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「diisobutylaluminium hydride」の詳細全文を読む スポンサード リンク
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