Siddique Rashid G, Whittaker Jacob J, Al-Fayaad Hydar A, McMurtrie John C, Clegg Jack K
School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld, 4072, Australia.
School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, Queensland 4000, Australia.
Dalton Trans. 2023 Oct 3;52(38):13487-13491. doi: 10.1039/d3dt02486e.
Despite the use of achiral ligands, the vast majority of metallosupramolecular assemblies containing octahedral tris-bidentate metal centres show strong stereochemical communication between metal centres, generally resulting in homochiral assemblies even though they are statistically disfavoured. Here we show that when resolved stereocentres are attached to the central part of a quaterpyridine ligand, the stereochemical coupling from this centre is insufficient to disrupt the strong stereochemical communication between metal centres in both [ML] helicates and [ML] tetrahedra.
尽管使用了非手性配体，但绝大多数含有八面体三双齿金属中心的金属超分子组装体在金属中心之间表现出强烈的立体化学通讯，通常会形成同手性组装体，即使从统计学角度来看它们是不利的。在这里我们表明，当拆分后的立体中心连接到四吡啶配体的中心部分时，来自该中心的立体化学耦合不足以破坏[ML]螺旋体和[ML]四面体中金属中心之间强烈的立体化学通讯。
