Premium
Dynamic Interconversion between Solomon Link and Trapezoidal Metallacycle Ensembles Accompanying Conformational Change of the Linker
Author(s) -
Feng HuiJun,
Gao WenXi,
Lin YueJian,
Jin GuoXin
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201904196
Subject(s) - linker , metallacycle , ligand (biochemistry) , chemistry , acetonitrile , solvent , rectangle , rhodium , crystallography , stereochemistry , conformational change , x ray crystallography , diffraction , organic chemistry , physics , catalysis , computer science , biochemistry , receptor , geometry , mathematics , optics , operating system
Abstract A novel template‐free Cp*Rh‐based molecular Solomon link has been established through selection of the flexible ligand L as a linker and the half‐sandwich rhodium(III) dinuclear fragment B1 as a rigid capping unit. Furthermore, we demonstrate that the self‐assembly of the Solomon link based on the flexible ligand is both solvent‐ and concentration‐dependent: the Solomon link is formed in concentrated methanolic solutions, whereas formation of a dinuclear trapezoidal rectangle is favored at low concentrations or in acetonitrile or DMF solutions. Remarkably, alteration of the solvent or concentration can promote a unique and dynamic interconversion between the two molecular species, accompanying conformational change of the ligand. The synthetic outcomes are supported by single‐crystal X‐ray diffraction analysis.