含二硼茚芴：6,12-二硼茚芴[1,2-b]晶体中性和还原态的分离

IF 15.6 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of the American Chemical Society Pub Date : 2025-05-21 DOI:10.1021/jacs.5c04487

Bi Youan E Tra,Yujie Zhao,Andrew Molino,Yifu Ouyang,Chun-Lin Deng,Colleen McAloon,Noah D McMillion,Heechan Kim,Chonghe Zhang,Peter Müller,Robert G Griffin,Robert J Gilliard

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引用次数: 0

摘要

报道了含二硼的五环π体系6,12-二硼二氨基[1,2-b]芴（DBIF）的合成及其氧化还原转化。与全碳氢化合物茚芴相比，配体配位和还原策略允许在四种氧化还原状态下调整电子结构。因此，我们引入了一个18π e-中性DBIF，一个20π e-双自由基，一个21π e-阴离子和一个22π e-阴离子，所有这些都被分离出来并进行了结构验证。双自由基具有高达77%的双自由基性质，具有开壳态单重态基态和热可达三重态。

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Diboron-Incorporated Indenofluorene: Isolation of Crystalline Neutral and Reduced States of 6,12-Diboraindeno[1,2-b]fluorene.

The synthesis and redox transformations of 6,12-diboraindeno[1,2-b]fluorene (DBIF)─a pentacyclic π-system with diboron incorporation─are reported. In notable contrast to the all-hydrocarbon indenofluorenes, a ligand coordination and reduction strategy allows tuning of the electronic structure across four redox states. Accordingly, we introduce an 18π e- neutral DBIF, a 20π e- diradical, a 21π e- radical anion, and a 22π e- dianion, all of which have been isolated and structurally authenticated. The diradicals exhibit diradical character of up to 77% and possess open-shell singlet ground states with thermally accessible triplet states.

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来源期刊

Journal of the American Chemical Society 化学-化学综合

CiteScore

24.40

自引率

6.00%

发文量

2398

审稿时长

1.6 months

期刊介绍： The flagship journal of the American Chemical Society, known as the Journal of the American Chemical Society (JACS), has been a prestigious publication since its establishment in 1879. It holds a preeminent position in the field of chemistry and related interdisciplinary sciences. JACS is committed to disseminating cutting-edge research papers, covering a wide range of topics, and encompasses approximately 19,000 pages of Articles, Communications, and Perspectives annually. With a weekly publication frequency, JACS plays a vital role in advancing the field of chemistry by providing essential research.