一种铅（II）取代的三重碳烯

IF 14.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of the American Chemical Society Pub Date : 2024-10-18 DOI:10.1021/jacs.4c10205

Fabian Dankert, Julian Messelberger, Ugo Authesserre, Abinash Swain, David Scheschkewitz, Bernd Morgenstern, Dominik Munz

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引用次数: 0

摘要

钳型配体 L3 支持的复合物 [L3PbBr][BArF24] (1) 与 Li[(C(═N2)TMS)] 反应生成 [L3Pb(C(═N2)TMS)][BArF24]（2）。重氮化合物 2 在辐照后会消除二氮，生成正式的 Plumba-alkyne 3，它在冷的芴溶液中会持续存在。变温紫外/可见光谱和核磁共振光谱与量子化学计算相结合，确定 3 是一种金属取代的三重碳烯。晶内辐照[L3Pb(C(═N2)TMS)(tol)][BArF24]（2-tol）提供了分子间 C-H 键插入甲苯（4）的快照。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

A Lead(II) Substituted Triplet Carbene

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A Lead(II) Substituted Triplet Carbene

Reaction of the pincer-type ligand L₃ supported complex [L₃PbBr][BArF₂₄] (1) with Li[(C(═N₂)TMS)] furnishes [L₃Pb(C(═N₂)TMS)][BArF₂₄] (2). Diazo-compound 2 eliminates dinitrogen upon irradiation affording formal plumba-alkyne 3, which persists in cold fluoroarene solutions. Variable temperature UV/Vis and NMR spectroscopies in combination with quantum-chemical calculations identify 3 as a metal-substituted triplet carbene. In-crystallo irradiation of [L₃Pb(C(═N₂)TMS)(tol)][BArF₂₄] (2·tol) provides a snapshot of intermolecular C–H bond insertion with toluene (4).

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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.