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Incorporation of Core‐Twisted Perylene Bisimide Ligands into a Discrete Cp*Rh‐Based Molecular‐Rectangle via Coordination‐Driven Self‐Assembly
Author(s) -
Zhang Le,
Das Rajorshi,
Han YingFeng
Publication year - 2019
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.201900003
Subject(s) - chemistry , perylene , diimide , steric effects , rhodium , crystallography , moiety , cyclic voltammetry , supramolecular chemistry , molecule , stereochemistry , ligand (biochemistry) , crystal structure , organic chemistry , biochemistry , receptor , electrode , electrochemistry , catalysis
A tetranuclear metallarectangle ( 2 ) derived from dinuclear rhodium(III) building block [Cp* 2 Rh 2 ( μ ‐η 2 ‐η 2 ‐C 2 O 4 )]Cl 2 and imidazole‐based perylene bisimide ditopic ligand ( 1 ) ( 1= 2,9‐bis(4‐(1 H ‐imidazol‐1‐yl)phenyl)‐5,6,12,13‐tetrachloroanthra‐[2,1,9‐ def :6,5,10‐d′e′f′]diisoquinoline‐1,3,8,10(2 H ,9 H )‐tetraone) in presence of silver triflate is reported. The self‐assembled metallarectangle 2 is fully characterized by NMR, ESI‐MS, UV‐vis absorption, fluorescence emission spectroscopy and cyclic voltammetry. The X‐ray diffraction analysis reveals a twisted conformational geometry of metallarectangle 2 caused by essential steric demands of the two side‐by‐side chlorine atoms. In addition, the analyzed structure also elaborates the intermolecular electrostatic interactions between the electron‐deficient diimide moiety of 2 and the electron‐rich planar phenanthrene molecule.