Probing the Extremes of Covalency in M−Al bonds: Lithium and Zinc Aluminyl Compounds,Angewandte Chemie International Edition

当前位置： X-MOL 学术 › Angew. Chem. Int. Ed. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Probing the Extremes of Covalency in M−Al bonds: Lithium and Zinc Aluminyl Compounds
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-08-15 , DOI: 10.1002/anie.202109416
Matthew M D Roy ₁ , Jamie Hicks ₁ , Petra Vasko _{1,

2} , Andreas Heilmann ₁ , Anne-Marie Baston ₁ , Jose M Goicoechea ₁ , Simon Aldridge ₁

Affiliation

Synthetic routes to lithium, magnesium, and zinc aluminyl complexes are reported, allowing for the first structural characterization of an unsupported lithium–aluminium bond. Crystallographic and quantum-chemical studies are consistent with the presence of a highly polar Li−Al interaction, characterized by a low bond order and relatively little charge transfer from Al to Li. Comparison with magnesium and zinc aluminyl systems reveals changes to both the M−Al bond and the (NON)Al fragment (where NON=4,5-bis(2,6-diisopropylanilido)-2,7-di-tert-butyl-9,9-dimethylxanthene), consistent with a more covalent character, with the latter complex being shown to react with CO₂ via a pathway that implies that the zinc centre acts as the nucleophilic partner.

中文翻译：

探索 M−Al 键中的共价极限：锂和锌铝基化合物

报道了锂、镁和锌铝基复合物的合成路线，首次实现了无负载锂-铝键的结构表征。晶体学和量子化学研究与高极性 Li-Al 相互作用的存在一致，其特征是低键序和从 Al 到 Li 的电荷转移相对较少。与镁和锌铝基体系的比较揭示了 M-Al 键和 (NON)Al 片段的变化（其中 NON=4,5-双（2,6-二异丙基苯胺）-2,7-二叔丁基- 9,9-二甲基呫吨)，与更共价的特征一致，后者的复合物显示通过暗示锌中心充当亲核伙伴的途径与CO ₂反应。

更新日期：2021-09-27

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11