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Issue 22, 2017
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Synthesis and structural characterization of metal complexes with macrocyclic tetracarbene ligands

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Abstract

Fourteen Ag(I), Au(I), Ni(II), Pd(II), and Pt(II) complexes with macrocyclic tetradentate N-heterocyclic carbene (NHC) ligands were prepared via reactions between three macrocyclic tetrabenzimidazolium salts and metal precursors. All except two Au complexes were characterized using single-crystal X-ray diffraction. Three different structures, including a trinuclear one containing a NHC–Ag–(H2O) moiety and a hexanuclear propeller-like supramolecular assembly, are found for Ag–NHC complexes. Nine complexes of group 10 metal ions adopt square-planar geometry, in which the different ring-sizes of the macrocyclic tetracarbene ligands lead to a variation of metal–carbene bond lengths. π–π stackings are observed between the rigid aromatic benzimidazole rings in the nickel group complexes.

Graphical abstract: Synthesis and structural characterization of metal complexes with macrocyclic tetracarbene ligands

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Article information


Submitted
10 Jul 2017
Accepted
28 Sep 2017
First published
29 Sep 2017

New J. Chem., 2017,41, 13442-13453
Article type
Paper

Synthesis and structural characterization of metal complexes with macrocyclic tetracarbene ligands

F. Fei, T. Lu, X. Chen and Z. Xue, New J. Chem., 2017, 41, 13442
DOI: 10.1039/C7NJ02485A

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