The aluminium monohydride (3-tBu-5-Me-2-(O)C6H2CH2-N-2,6-iPr2C6H3)AlH(NMe3)
(2) was prepared by treatment of the bidentate salicylaldimine [3-tBu-5-Me-2-(OH)C6H2CHN-2,6-iPr2C6H3]
(1) with a small excess of AlH3·NMe3 in high yield. Compound 2 reacted with sulfur and selenium respectively to afford the dimeric aluminium chalcogenide [(3-tBu-5-Me-2-(O)C6H2CH2-NH-2,6-iPr2C6H3)Al(μ-E)]2
[E = S (3), E = Se (4)]. During the formation of 2 hydrogen migration from the aluminium centre to the ligand backbone occurred. A possible reaction mechanism for 3 and 4 is discussed and the molecular structures of compounds 2–4 were determined by X-ray structural analyses.
铝单
氢化物 (3-tBu-5-Me-2-(O)C6H2CH2-N-2,6-iPr2C6H3)AlH(NMe3) (2) 通过将双齿
盐酸亚胺 [3-tBu-5-Me-2-(OH)C6H2CHN-2,6-iPr2C6H3] (1) 与少量过量的
AlH3·NMe3 处理而高产率制备而成。化合物 2 分别与
硫和
硒反应,得到二聚
铝硫族化合物 [(3-tBu-5-Me-2-(O)C6H2CH2-N
H-2,6-iPr2C6H3)Al(μ-E)]2 [E = S (3), E = Se (4)]。在 2 的形成过程中,
氢从
铝中心迁移到
配体主链。讨论了 3 和 4 的可能反应机制,并通过 X 射线结构分析确定了化合物 2-4 的分子结构。