Incorporation of Core‐Twisted Perylene Bisimide Ligands into a Discrete CpRh‐Based Molecular‐Rectangle via Coordination‐Driven Self‐Assembly

A tetranuclear metallarectangle (2) derived from dinuclear rhodium(III) building block [Cp*2Rh2(μ‐η2‐η2‐C2O4)]Cl2 and imidazole‐based perylene bisimide ditopic ligand (1) (1=2,9‐bis(4‐(1H‐imidazol‐1‐yl)phenyl)‐5,6,12,13‐tetrachloroanthra‐[2,1,9‐def:6,5,10‐d′e′f′]diisoquinoline‐1,3,8,10(2H,9H)‐tetrao...

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Bibliographic Details
Published in:Israel journal of chemistry 2019-03, Vol.59 (3-4), p.311-316
Main Authors: Zhang, Le, Das, Rajorshi, Han, Ying‐Feng
Format: Article
Language:English
Subjects:
Chlorine
Diimide
Emission analysis
Fluorescence
half-sandwich complexes
Imidazole
Ligands
metallarectangle
NMR
Nuclear magnetic resonance
Phenanthrene
Rhodium
Silver
supramolecular chemistry
twisted ligands
X-ray diffraction
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Summary:A tetranuclear metallarectangle (2) derived from dinuclear rhodium(III) building block [Cp*2Rh2(μ‐η2‐η2‐C2O4)]Cl2 and imidazole‐based perylene bisimide ditopic ligand (1) (1=2,9‐bis(4‐(1H‐imidazol‐1‐yl)phenyl)‐5,6,12,13‐tetrachloroanthra‐[2,1,9‐def:6,5,10‐d′e′f′]diisoquinoline‐1,3,8,10(2H,9H)‐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.
ISSN:0021-2148
1869-5868
DOI:10.1002/ijch.201900003