Five-coordinate organoaluminum acetylides and crystal structure of the hydrosylate, [Salophen(tBu)Al]2O
摘要:
The first examples of five coordinate aluminum acetylide compounds chelated by a single ligand are reported in this paper. The combination of L('Bu)AlCl (where L = Salen (1), Salpen (2), Salophen (3), Salomphen (4)) with LiCdropCPh in THF at -78degrees C leads to the formation of the four acetylides (5-8), LCdropCPh. These are extremely moisture sensitive and readily hydrolyze to form aluminum hydroxides and with condensation form compounds of formula [L('Bu)Al](2)O. The hydrosylate [Salophen('Bu)Al](2)O (9) has been structurally characterized. (C) 2003 Elsevier B.V. All rights reserved.