A Saturated and Unsaturated Backbone of the Products from the Reaction of 1,2-Diimine with Aluminum Precursors

An aluminum(III) monohydride [(2, 6-iPr(2)C(6)H(3))NC(Me)](2)AlH(NMe3) (1) was synthesized by oxidative addition of 1, 2-diimine (L) {L = [(2, 6-iPr(2)C(6)H(3))NC(Me)](2)} with equivalent amounts of H3AlNMe3. A lithium salt (LLi2) was obtained when L was treated with elemental lithium. Under these conditions 1, 2-diimine is reduced to LLi2 with simultaneous formation of a C=C bond. The LLi2 is formed in-situ and treated with AlBr3 to result in the formation of aluminum(III) monobromide [(2, 6-iPr(2)C(6)H(3))NC(Me)](2)AlBr(OEt2) (2). The two products 1 and 2 show a saturated as well as an unsaturated backbone of the ligand.