Torsion Effects Beyond the δ Bond and the Role of π Metal-Ligand Interactions.

ABSTRACT: Previous studies on bimetallic paddlewheel compounds have established a direct correlation between metal-metal distance and ligand torsion angles, leading to the rule that higher torsion results in longer metal-metal bond distances. Here, the new discovery based on diarylformamidinate Ru₂⁵⁺ paddlewheel compounds [Ru₂Cl(DArF)₄] that show an opposite behavior is reported: higher torsions lead to shorter metal-metal distances. This discovery challenges the assumption that internal rotation solely impacts the δ bond. By combining experimental and theoretical techniques, it is demostrated that this trend is associated with previously overlooked π metal-ligand interactions. These π metal-ligand interactions are a direct consequence of the paddlewheel structure and the conju

SUBMITTER: Inchausti A 

PROVIDER: S-EPMC11220682 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature