COMPLEX COMPOUNDS OF ALUMINUM HYDRIDE ETHOXIDE WITH MIXED ALUMINUM AND BORON HYDRIDES OF LITHIUM AND MAGNESIUM: COMPOSITIONS, PHYSICOCHEMICAL PROPERTIES, AND SYNTHESIS OF UNSOLVATED ALUMINUM HYDRIDEстатья
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Дата последнего поиска статьи во внешних источниках: 26 сентября 2016 г.
Аннотация:Reactions in the LiAlH4frame0AlH3frame1Et2O3, LiBH4frame2AlH3frame3Et2O, Mg(AlH4)2frame4AlH3frame5Et2O, and Li2Mg(AlH4)4frame6AlH4frame7Et2O systems are studied by the methods of physicochemical analysis and IR spectroscopy. Complexes LiAlH4 4AlH3 4Et2O (I) and 2LiAlH4 AlH3 4Et2O (II) were isolated from solutions of the first system. Complexes LiBH4 AlH3 2Et2O (III) and LiBH4 2AlH3 3Et2O (IV) were isolated from solutions of the second system. The systems of magnesium aluminum hydride are eutonics. The thermal decomposition of crystals of I and II or their solutions in ether–toluene produces {LiAlH4 + -AlH3, '-AlH3, and frame8AlH3}. The thermal decomposition of IV results in {LiBH4 + AlH3 0.33Et2O}. When present simultaneously, I and IV yield pure, unsolvated aluminum hydride.