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

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. Molecular structures of all complexes are established by single-crystal X-ray diffraction studies. Metal ions in Ag(I) complexes 1–3 and 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 photoluminescent properties of Au(I) complexes 5–8 have also been investigated.

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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, Accepted Manuscript
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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. B. Xue, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C7NJ04020B

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