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Issue 6, 2018
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Synthesis and characterization of Ag(I) and Au(I) complexes with macrocyclic hybrid amine N-heterocyclic carbene ligands

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Abstract

Four macrocyclic hybrid salts with different numbers of benzimidazolium and amine units, [H2L][PF6]2 (L = L1, L2, L3) and [H4L4][PF6]4, have been employed as the heterocyclic carbene (NHC) precursors toward new Ag(I)– and Au(I)–NHC complexes. Three trinuclear and one tetranuclear Ag(I) complexes 1–4 have been obtained from the reactions of the NHC precursors and Ag2O in acetonitrile. Four dinuclear Au(I)–NHC complexes 5–8 have been prepared by reacting the NHC precursors and AuCl(SMe2) in the presence of NaOAc in DMF. The molecular structures of all the complexes are established by single-crystal X-ray diffraction studies. The metal ions in the Ag(I) complexes 1–3 and the Au(I) complexes 5–7 are coordinated with two macrocyclic NHC ligands to form a sandwiched structure. In contrast, a trinuclear Ag3 core is located in the cavity of one macrocyclic ligand in [Ag3(L4)][PF6]3 (4). The photoluminescence properties of Au(I) complexes 5–8 have also been investigated.

Graphical abstract: Synthesis and characterization of Ag(i) and Au(i) complexes with macrocyclic hybrid amine N-heterocyclic carbene ligands

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Publication details

The article was received on 18 Oct 2017, accepted on 06 Feb 2018 and first published on 06 Feb 2018


Article type: Paper
DOI: 10.1039/C7NJ04020B
Citation: New J. Chem., 2018,42, 4700-4713
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    Synthesis and characterization of Ag(I) and Au(I) complexes with macrocyclic hybrid amine N-heterocyclic carbene ligands

    T. Lu, C. Yang, C. A. Steren, F. Fei, X. Chen and Z. Xue, New J. Chem., 2018, 42, 4700
    DOI: 10.1039/C7NJ04020B

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