Saini Suresh, Agarwal Abhishek, Bose Shubhankar Kumar
Centre for Nano and Material Sciences (CNMS), JAIN (Deemed-to-be University), Jain Global Campus, Bangalore-562112, India.
Dalton Trans. 2020 Dec 21;49(47):17055-17075. doi: 10.1039/d0dt03378b. Epub 2020 Nov 20.
The diversification and synthetic utility of carbyne complexes in organometallic chemistry and catalysis are well recognized, but the syntheses of related heavier group 14 alkylidyne complexes are a recent advancement. A wide range of metal-ylidyne M[triple bond, length as m-dash]E (E = Si-Pb) complexes were synthesized and characterized spectroscopically. The synthetic methodology generally involves elimination or substitution chemistry between metallates and suitable group 14 precursors. The reluctance in forming triple bonded complexes makes this field quite fascinating and challenging. This article gives a brief overview of the pioneering reports followed by detailed information on the latest developments of complexes having a triple bond between a metal and heavier group 14 elements (Si, Ge, Sn, and Pb). Their synthesis and chemistry of the earlier reports followed by recent progress in this field will be discussed. Furthermore, their unique structures and bonding properties will be described based on spectroscopic and theoretical studies.
卡宾配合物在有机金属化学和催化中的多样性及合成效用已得到广泛认可，但相关较重的第14族亚烷基配合物的合成是最近才取得的进展。人们合成了多种金属亚烷基M≡E（E = Si - Pb）配合物，并通过光谱对其进行了表征。合成方法通常涉及金属酸盐与合适的第14族前体之间的消除或取代反应。形成三键配合物的困难使得该领域极具吸引力且充满挑战。本文简要概述了开创性的报道，随后详细介绍了金属与较重的第14族元素（Si、Ge、Sn和Pb）之间具有三键的配合物的最新进展。将讨论它们早期报道的合成及化学性质，以及该领域的最新进展。此外，将基于光谱和理论研究描述它们独特的结构和键合性质。
