Dinuclear mono-bridged or polymeric lanthanide complexes from one ligand: structural transformation and chiral induction

We designed and synthesized a semi-rigid bis-tridentate ligand L which could undergo a trans -to- cis conformational transition when coordinated onto lanthanum ions through the rotation of the single bond on the central terphenyl bridge. By adjusting the metal/ligand ratio, a single-ligand bridged d...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2022-12, Vol.52 (1), p.37-43
Main Authors: Chen, Ran, Yan, Qian-Qian, Hu, Shao-Jun, Guo, Xiao-Qing, Zhou, Li-Peng, Sun, Qing-Fu
Format: Article
Language:English
Subjects:
Dichroism
Lanthanum
Ligands
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Summary:We designed and synthesized a semi-rigid bis-tridentate ligand L which could undergo a trans -to- cis conformational transition when coordinated onto lanthanum ions through the rotation of the single bond on the central terphenyl bridge. By adjusting the metal/ligand ratio, a single-ligand bridged dinuclear complex La 2 L 3 and an infinitely extending two-dimensional layered metal organic polymer (La 2 L 2 ) n can be obtained. Through the induction of the chiral auxiliary ligand G R / S , these two achiral assemblies could both be transformed into the chiral mononuclear three-component complex La LG R / S . In addition, we also realized a linear ee sensing for the auxiliary ligand by induced circular dichroism. By adjusting the metal/ligand ratio, either a single-ligand bridged dinuclear complex or a metal-organic polymer can be obtained from a semi-rigid achiral bis-tridentate ligand. A linear ee sensing for the auxiliary ligand was realized through ICD.
ISSN:1477-9226
1477-9234
DOI:10.1039/d2dt03351h