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以为中心的Disbiradical的合理设计

Jan Rosenboom¹, Florian Taube¹, Leon Teichmeier¹

¹Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059, Rostock, Germany.

Angewandte Chemie (International ed. in English)

|December 20, 2023

概括

研究人员合成了第一个以为中心的非激进分子,这些分子在原子上有两个激进点. 这些新型化合物具有近100%的二基性质,并显示出小分子激活的潜力.

科学领域:

无机化学无机化学有机化学
有机化学化学有机化学
激进化学激进化学是什么

背景情况:

以为中心的异基,其特点是单个自旋双重体与弱自旋相互作用,以前是未知的.
这种物种的合成需要连接两个单基中心.

研究的目的:

合成和描述第一个以为中心的异基.
研究这些新型化合物的电子和结构性质.
探索它们在小分子激活中的潜力.

主要方法:

合成双基[⋅P(μ-NTer) 2 P⋅] (1) 随后与1,6-二甲反应以产生{Br[P(μ-NTer) ]2 }2 C6H12 (3).
使用KC8减少化物种以形成二基基 {⋅[P(μ-NTer) ]2 }2 C6H12 (4).
电子磁共振 (EPR) 光谱和量子化学计算用于表征.

主要成果:

在固态中,成功合成了以为中心的异基 {⋅[P(μ-NTer) ]2 }2 C6H12 (4) 基位之间的距离很大.
复合物4显示了P中心的二基中报告的最高二基特征,接近100%.
EPR光谱学表明,溶液中的交换相互作用比固态结构预测的要大,这归因于动态形状灵活性.
进一步的减少产生了第一个结构性特征的P中心的二氧化基离子 (5−).

结论:

该研究报告了为中心的disbiradicals的第一个合成和表征.
合成的disbiradical表现出显著的biradical特征和形状动态.
该化合物在小分子激活中的应用方面显示出前途.

关键词:

一个激进的比拉迪卡尔这是激进的激进主义.迪斯顿基基离子 (Distonic Radical Anion) 是一个离子基离子.在 EPR 光谱学.酸盐化学酸盐化学

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