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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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Publication details

The article was received on 10 Jul 2017, accepted on 28 Sep 2017 and first published on 29 Sep 2017


Article type: Paper
DOI: 10.1039/C7NJ02485A
Citation: New J. Chem., 2017, Advance Article
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    Synthesis and structural characterization of metal complexes with macrocyclic tetracarbene ligands

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

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