A crystalline stannyne

IF 19.2 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nature chemistry Pub Date : 2024-06-17 DOI:10.1038/s41557-024-01555-4

Xin-Feng Wang, Chaopeng Hu, Jiancheng Li, Rui Wei, Xin Zhang, Liu Leo Liu

引用次数: 0

Abstract

The synthesis of heteronuclear alkyne analogues incorporating heavier group 14 elements (R¹–C≡E–R², E = Si, Ge, Sn, Pb) has posed a long-standing challenge. Neutral silynes (R¹–C≡Si(L)–R²) and germynes (R¹–C≡Ge(L)–R²) stabilized by a Lewis base have achieved sufficient stability for structural characterization at low temperatures. Here we show the isolation of a base-free stannyne (R¹–C≡Sn–R²) at room temperature, achieved through the strategic use of a bulky cyclic phosphino ligand in combination with a bulky terphenyl substituent. Despite an allenic structure with strong delocalization of π-electrons, this compound exhibits adjacent ambiphilic carbon and tin centres, forming a carbon–tin multiple bond with ionic character. The stannyne demonstrates reactivity similar to carbenes or stannylenes, reacting with 1-adamantyl isocyanide and 2,3-dimethyl-1,3-butadiene. Additionally, its carbon–tin bond can be saturated by Et₃N·HCl or cleaved by isopropyl isocyanate.

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一种结晶的斯坦尼涅

合成含有较重第 14 族元素（R1-C≡E-R2，E = Si、Ge、Sn、Pb）的杂核炔类似物是一项长期的挑战。通过路易斯碱稳定的中性硅炔（R1-C≡Si(L)-R2）和锗炔（R1-C≡Ge(L)-R2）已经达到了足够的稳定性，可以在低温下进行结构表征。在这里，我们展示了在室温下分离出的无碱链烷（R1-C≡Sn-R2），这是通过策略性地使用笨重的环状膦配体和笨重的三联苯取代基实现的。尽管这种化合物具有异链结构，π 电子具有很强的离散性，但它显示出邻近的碳和锡中心，形成了具有离子特性的碳-锡多键。该锡烷具有类似于碳烯或锡烷的反应活性，可与 1-金刚烷基异氰酸酯和 2,3-二甲基-1,3-丁二烯发生反应。此外，它的碳-锡键可被 Et3N-HCl 饱和或被异氰酸异丙酯裂解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature chemistry 化学-化学综合

CiteScore

29.60

自引率

1.40%

发文量

226

审稿时长

1.7 months

期刊介绍： Nature Chemistry is a monthly journal that publishes groundbreaking and significant research in all areas of chemistry. It covers traditional subjects such as analytical, inorganic, organic, and physical chemistry, as well as a wide range of other topics including catalysis, computational and theoretical chemistry, and environmental chemistry. The journal also features interdisciplinary research at the interface of chemistry with biology, materials science, nanotechnology, and physics. Manuscripts detailing such multidisciplinary work are encouraged, as long as the central theme pertains to chemistry. Aside from primary research, Nature Chemistry publishes review articles, news and views, research highlights from other journals, commentaries, book reviews, correspondence, and analysis of the broader chemical landscape. It also addresses crucial issues related to education, funding, policy, intellectual property, and the societal impact of chemistry. Nature Chemistry is dedicated to ensuring the highest standards of original research through a fair and rigorous review process. It offers authors maximum visibility for their papers, access to a broad readership, exceptional copy editing and production standards, rapid publication, and independence from academic societies and other vested interests. Overall, Nature Chemistry aims to be the authoritative voice of the global chemical community.

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