Transition-Metal Capping to Suppress Back-Donation to Enhance Donor Ability,Organometallics

当前位置： X-MOL 学术 › Organometallics › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Transition-Metal Capping to Suppress Back-Donation to Enhance Donor Ability
Organometallics ( IF 2.5 ) Pub Date : 2020-09-24 , DOI: 10.1021/acs.organomet.0c00534
Masaichi Saito ₁ , Jumpei Hamada ₁ , Shunsuke Furukawa ₁ , Masahiko Hada ₂ , Libor Dostál ₃ , Aleš Růžička ₃

Affiliation

The design of strong donor ligands has been one of the crucial tasks in the development of ligands for transition-metal complexes. One effective strategy is suppression of back-donation from a metal to a ligand by electron donation from adjacent main-group atoms bearing lone-pair electrons. We now report another method for suppression of back-donation: capping an accepting orbital by coordination of a transition metal. A lone pair on the triple-decker ruthenocene-type stannole complex can coordinate an Mo(CO)₅ moiety. In the resulting complex, back-donation from a Mo to an Sn moiety is effectively suppressed because of the occupation of a potentially electron-accepting 5p orbital on the Sn atom by coordination of the Ru moieties. The triple-decker ruthenocene-type stannole complex can also coordinate an Ag(I) atom to form a 1:2 complex, where two bulky ligands are oriented in a perpendicular fashion.

中文翻译：

过渡金属封盖抑制反向捐赠以增强捐赠者的能力

强供体配体的设计一直是过渡金属配合物配体开发中的关键任务之一。一种有效的策略是通过从带有孤对电子的相邻主族原子的电子给予来抑制金属向配体的反向给予。现在，我们报告另一种抑制反向捐赠的方法：通过过渡金属的配位来封闭一个接受轨道。三层钌茂茂型锡环络合物上的一个孤对可以配位Mo（CO）₅部分。在所得的络合物中，由于通过Ru部分的配位，在Sn原子上占据了潜在的电子接受性5p轨道，因此有效地抑制了从Mo向Sn部分的背送。三层钌茂茂型锡环络合物还可以配位Ag（I）原子形成1：2络合物，其中两个庞大的配体以垂直方式取向。

更新日期：2020-09-24

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11