Abstract
The reaction of LiCCMe with [(Dipnacnac)MgI(OEt2)] (Dipnacnac=[(DipNCMe)2CH], Dip=2,6-diisopropylphenyl) afforded [{(Dipnacnac)MgCCMe}2] 1 in good yield. Treatment of 1 with AlH3·NMe3 in toluene under reflux afforded a low yield of the novel imido aluminium magnesium hydride compound [{(AlH)(AlH2)3(NDip)3}2Mg] 2. The latter compound features a central Mg2+ ion that is coordinated via hydride ligands to two monoanionic [(AlH)(AlH2)3(NDip)3]− fragments. The compounds have been characterised by 1H and 13C NMR spectroscopy, IR spectroscopy and the crystal structures of 1 and 2·4C7H8 have been determined.
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