Dalton Transactions · 2016 · 25 citations · 47 references
The reaction of (dpp-bian)AlEt(Et<sub>2</sub>O) (1) (dpp-bian = 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene) with 4,4'-dimethoxybenzophenone leads to the replacement of Et<sub>2</sub>O with the ketone resulting complex (dpp-bian)AlEt[O[double bond, length as m-dash]C(4-MeOC<sub>6</sub>H<sub>4</sub>)<sub>2</sub>] (2). The reaction of compound 1 with 2,6-di-tert-butyl-4-methylphenol (1 : 1) or Ph<sub>2</sub>NH (1 : 1) affords the addition products [dpp-bian(H)]AlEt[O(2,6-tBu<sub>2</sub>-4-MeC<sub>6</sub>H<sub>2</sub>)] (3) and [dpp-bian(H)]AlEt(NPh<sub>2</sub>) (4) correspondingly. Treatment of complex 1 with 0.5 molar equivalents of H<sub>2</sub>O gives ethylalumoxane {[dpp-bian(H)]AlEt}<sub>2</sub>(μ-O) (5). Newly prepared complexes 2-5 have been characterized by NMR and IR spectroscopy, and the molecular structures of 2, 3, and 5 have been determined by single crystal X-ray analysis.
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