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首页> 外文期刊>Coordination chemistry reviews >Tetrel bonding interactions at work: Impact on tin and lead coordination compounds
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Tetrel bonding interactions at work: Impact on tin and lead coordination compounds

机译：Tetrel键相互作用在工作：对锡和铅配位化合物的影响

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A tetrel bond can be defined as an interaction between any electron donating moiety and a group 14 element acting as Lewis acid. Experimental and theoretical research on this interaction has rapidly grown in recent years. A reason for that is related to the fact that it can be easily exploited to design supramolecular structures. This review is devoted to highlight the role of heavier tetrel atoms (tin and lead) as promising building blocks for the construction of supramolecular assemblies and supramolecular MOFs based on tetrel bonding interactions. In the case of tin, the number of investigations on this topic is limited, therefore we also provide a survey of crystal structures retrieved from the Cambridge Structural Database where this interaction is crucial for the crystal packing stability. We have subdivided this part taking into consideration the atom or group of atoms acting as lone pair donor atom (O, S, N, halogen) and also the intra- or intermolecular nature of the interaction. This survey evidences that close contacts between Sn and lone-pair-possessing atoms are quite common and oriented along the extension of the covalent bond formed by the Sn and the most electron-withdrawing substituent. Moreover, it provides experimental evidence of the ability to act as electrophilic site (tetrel bond donor). This ability has a prominent role upon the conformations and the packing of Tin organic derivatives in the solid state. For Pb(IV) organic compounds, where the geometry around the metal center is tetrahedral we also provide a survey of crystal structures retrieved from the Cambridge Structural Database. To our knowledge, this type of analysis in Pb(IV) is unprecedented in the literature. For Pb(II), we have selected several works where the tetrel bonding interaction is used as a robust tool in crystal engineering and supramolecular chemistry. (C) 2019 Elsevier B.V. All rights reserved.
机译：蝶形键可被定义为任何给电子部分与充当路易斯酸的第14族元素之间的相互作用。近年来，有关这种相互作用的实验和理论研究迅速发展。其原因与以下事实有关：可以容易地利用它来设计超分子结构。这篇综述致力于强调重的锡原子（锡和铅）的作用，这是基于锡原子键合相互作用构建超分子组装体和超分子MOF的有希望的基础。以锡为例，对该主题的研究数量是有限的，因此我们还提供了从剑桥结构数据库中检索到的晶体结构的调查，其中，这种相互作用对于晶体堆积的稳定性至关重要。考虑到作为孤对供体原子（O，S，N，卤素）的原子或原子团，以及相互作用的分子内或分子间性质，我们对该部分进行了细分。这项调查证明，Sn和具有孤对的原子之间的紧密接触非常普遍，并且沿着由Sn和吸电子最多的取代基形成的共价键的延伸而取向。此外，它提供了充当亲电位点（铁键结合供体）的能力的实验证据。这种能力对固态的锡有机衍生物的构象和堆积具有重要作用。对于金属中心周围的几何形状为四面体的Pb（IV）有机化合物，我们还提供了从剑桥结构数据库中检索到的晶体结构的调查。据我们所知，Pb（IV）中的这种分析在文献中是空前的。对于Pb（II），我们选择了几项研究，其中将tetrel键相互作用用作晶体工程和超分子化学中的可靠工具。 （C）2019 Elsevier B.V.保留所有权利。

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