Explain about preparation of diborane, Chemistry

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Q. Explain about Preparation of diborane?

Diborane can be prepared in almost quantitative yields by the reduction of boron Tricloride etherate (BF₃, 0Et₂) with lithium aluminium hydride (LiAIH₄,) or sodium borohydride (NaBH₄,):

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where diglyme is diethyleneglycol dimethyl ether, (MeOCH₂,CH₂)₂0. Diborane can also be prepared by treating NaBH₄, with conc. H₂SO₄ or H₃PO₄.

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