Dedicated to Professor Sjoerd Harder on the Occasion of his 60 th birthdayand p-diphenol resulted in the formation of compounds containing the CÀ OÀ AlÀ OÀ C linkages, including the acyclic LAl[(μ-O)CH 2 (o-ClÀ C 6 H 4 ) 2 ] 2 (1), the five-membered ring LAl[(μ-O)CMe 2 ] 2 (2), the six-membered ring LAl[(μ-O)CH 2 ] 2 CMe 2 (3) and LAl[(μ-O)CH 2 ] 2 C(CH 2 Br) 2 ( 4), and the macrocyclic [LAl(μ-O) 2 (p-C 6 H 4 )] 4 (5), respectively. These practices prove that β-diketiminate aluminum dihydride is a valuable precursor for the preparation of acyclic and cyclic systems. 1-5 were characterized by melting point, 1 H and 13 C NMR, FT-IR, and single-crystal X-ray diffraction studies.
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