diborane preparation from sodium borohydride
2NaBH4 + I2 → B2H6 + 2NaI + H2 This method is used for the industrial production. As discussed earlier diborane can be prepared by the action of metal hydride with boron. Borohydride refers to the an ion and its salt as BH 4− Laboratory method of preparation: Diborane is prepared in the laboratory by the oxidation of sodium borohydride with iodine in diglyme as solvent. Properties of boron hydrides - definition 1. Extensive studies of diborane have led to the development of multiple syntheses. Most preparations entail reactions of hydride donors with boron halides or alkoxides. The industrial synthesis of diborane involves the reduction of BF3 by sodium hydride, lithium hydride or lithium aluminium hydride: Diborane can also be obtained in small quantities by the reaction of iodine with sodium borohydride in diglyme.
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