咔唑基镧硼酸盐中 BH4- 阴离子的氢化物萃取

IF 2.5 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Organometallics Pub Date : 2024-04-30 DOI:10.1021/acs.organomet.4c00095

Lucas Winkler, Emma Stapf, Alexander Hinz

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引用次数: 0

摘要

通过在镧系元素的配位层中引入立体要求较高的咔唑配体（dtbpCbz = 1,8-双（3,5-二叔丁基苯基）-3,6-二叔丁基咔唑基），合成了硼氢化镧配合物。化合物 1（dtbpCbzLa(η3-BH4)2(THF)2）是通过直接的硼氢化反应方法获得的。我们进一步研究了溶剂分子抽取时的配位行为。去掉一个 THF 分子后，复合物 2 形成了二聚结构（[dtbpCbzLa(BH4)2(THF)]2）。然而，与三(五氟苯基)硼烷的反应并不会导致 THF 的第二次抽取。相反，我们观察到硼氢化物分解并形成了一种 π 配位的肼基镧络合物，即 (dtbpCbzBH3)La(BH4)[HB(C6F5)3](THF) (3)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Hydride Abstraction from a BH4– Anion in a Carbazolyl Lanthanum Boranate

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Hydride Abstraction from a BH4– Anion in a Carbazolyl Lanthanum Boranate

Lanthanum borohydride complexes were synthesized by introducing a sterically demanding carbazole ligand (^dtbpCbz = 1,8-bis(3,5-di-tert-butylphenyl)-3,6-di-tert-butylcarbazolyl) into the coordination sphere of the lanthanide. Compound 1 (^dtbpCbzLa(η³-BH₄)₂(THF)₂) was obtained by a straightforward borohydride metathesis approach. We further investigated the coordination behavior toward abstraction of the solvent molecules. Removal of one THF molecule results in the dimeric structure of complex 2 ([^dtbpCbzLa(BH₄)₂(THF)]₂). However, the reaction with tris(pentafluorophenyl)borane does not lead to a second abstraction of THF. Instead, we observed borohydride decomposition and the formation of a π-coordinated lanthanum carbazolyl complex, (^dtbpCbzBH₃)La(BH₄)[HB(C₆F₅)₃](THF) (3).

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来源期刊

Organometallics 化学-无机化学与核化学

CiteScore

5.60

自引率

7.10%

发文量

382

审稿时长

1.7 months

期刊介绍： Organometallics is the flagship journal of organometallic chemistry and records progress in one of the most active fields of science, bridging organic and inorganic chemistry. The journal publishes Articles, Communications, Reviews, and Tutorials (instructional overviews) that depict research on the synthesis, structure, bonding, chemical reactivity, and reaction mechanisms for a variety of applications, including catalyst design and catalytic processes; main-group, transition-metal, and lanthanide and actinide metal chemistry; synthetic aspects of polymer science and materials science; and bioorganometallic chemistry.