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<p>This research shows the coexistence and competition of intracyclic Ag-Ag, intracyclic Ag-Au, intercyclic Au-Au, Ag⋅⋅⋅X, and Au⋅⋅⋅X in the formation of the skeleton of [AuAgAuAg] rhombus. Reactions of [Au(Spy)(PPh<sub>2</sub>py)] with AgX (Xˉ = ClO<sub>4</sub>ˉ and BF<sub>4</sub>ˉ) produce the rhombus skeleton with an intracyclic Ag-Ag interaction rather an Au-Au interaction: the ClO<sub>4</sub>ˉ anion affords a discrete [AuAgAuAg] whereas the BF<sub>4</sub>ˉ affords a polymeric [AuAgAuAg] with an intercyclic Au-Au interaction (3.0245(3) Å). Anion exchange of [AuAg(Spy)(BF<sub>4</sub>)<sub>0.5</sub>(PPh<sub>2</sub>py)]<sub>n</sub>(BF<sub>4</sub>)<sub>0.5n</sub>∙nCH<sub>2</sub>Cl<sub>2</sub> with ClO<sub>4</sub>ˉ has been fully carried out, but that of [AuAg(Spy)(ClO<sub>4</sub>)(PPh<sub>2</sub>py)]<sub>2</sub> with BF<sub>4</sub>ˉ has been in part accomplished in a mixture of MeOH : H<sub>2</sub>O (1 : 5).</p>

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Competition of Au-Au, Ag-Ag, and Au-Ag interactions in formation of [AuAgAuAg] rhombic unit: difference and similarity between ClO4ˉ and BF4ˉ anions

  • 期刊论文

  • 发表日期：

    2026年4月13日

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  • Jiyeong Song,
  • Dongwon Kim,
  • Young-A Lee

摘要

This research shows the coexistence and competition of intracyclic Ag-Ag, intracyclic Ag-Au, intercyclic Au-Au, Ag⋅⋅⋅X, and Au⋅⋅⋅X in the formation of the skeleton of [AuAgAuAg] rhombus. Reactions of [Au(Spy)(PPh2py)] with AgX (Xˉ = ClO4ˉ and BF4ˉ) produce the rhombus skeleton with an intracyclic Ag-Ag interaction rather an Au-Au interaction: the ClO4ˉ anion affords a discrete [AuAgAuAg] whereas the BF4ˉ affords a polymeric [AuAgAuAg] with an intercyclic Au-Au interaction (3.0245(3) Å). Anion exchange of [AuAg(Spy)(BF4)0.5(PPh2py)]n(BF4)0.5n∙nCH2Cl2 with ClO4ˉ has been fully carried out, but that of [AuAg(Spy)(ClO4)(PPh2py)]2 with BF4ˉ has been in part accomplished in a mixture of MeOH : H2O (1 : 5).