728. A study of metal borohydrides. The reaction of aluminium borohydride with various ligand molecules

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Abstract
The reactions of aluminium borohydride with several Lewis bases, containing donor atoms from Groups V and VI, have been studied. All the bases react initially to form 1 : 1 adducts, and those containing nitrogen or phosphorus as the donor atom then react further until 4 equivalents of ligand have been consumed; the products are then derivatives of aluminium hydride, L+A1H3 (where L = ligand) and borane, L+BH,. The infrared and the proton and llB nuclear magnetic resonance (n.m.r.) spectra of the products have been recorded, and are discussed in relation to the structure of the adducts. In addition, a comparison of the behaviour of aluminium borohydride with that of the boron hydrides is made

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