Cabeza Javier A, García-Álvarez Pablo
Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071, Oviedo, Spain.
Chemistry. 2024 Jun 12;30(33):e202400786. doi: 10.1002/chem.202400786. Epub 2024 May 16.
This review article focuses on amidinatotetrylenes that potentially can (or have already shown to) behave as bi- or tridentate ligands because they contain at least one amidinatotetrylene moiety (silylene, germylene or stannylene) and one (or more) additional coordinable fragment(s). Currently, they are being widely used as ligands in coordination chemistry, small molecule activation and catalysis. This review classifies those that have been isolated as transition metal-free compounds into five families that differ in the position(s) of the donor group(s) (D) on the amidinatotetrylene moiety, namely: ED{RNC(R)NR}, EX{DNC(R)NR}, EX{RNC(D)NR}, EX{DNC(R)ND} and E{RNC(R)ND} (E=Si, Ge or Sn). Those that do not exist as transition metal-free compounds but have been observed as ligands in transition metal complexes are cyclometallated and ring-opened amidinatotetrylene ligands. This article presents schematic descriptions of their structures, the approaches used for their syntheses and a quick overview of their involvement (as ligands) in transition metal-catalysed reactions. The literature is covered up to the end of 2023.
这篇综述文章聚焦于脒基四价主族元素化合物，因其含有至少一个脒基四价主族元素部分（硅烯、锗烯或锡烯）以及一个（或多个）额外的可配位片段，所以它们可能（或已经显示出）表现为双齿或三齿配体。目前，它们在配位化学、小分子活化和催化领域被广泛用作配体。这篇综述将已分离出的无过渡金属化合物分为五个家族，这些家族在脒基四价主族元素部分供体基团（D）的位置上有所不同，即：ED{RNC(R)NR}、EX{DNC(R)NR}、EX{RNC(D)NR}、EX{DNC(R)ND}和E{RNC(R)ND}（E = Si、Ge或Sn）。那些不存在无过渡金属化合物形式，但在过渡金属配合物中作为配体被观察到的是环金属化和开环的脒基四价主族元素配体。本文介绍了它们结构的示意图描述、合成方法以及它们（作为配体）参与过渡金属催化反应的简要概述。文献涵盖至2023年底。
