Mononuclear copper(I) and binuclear silver(I) complexes of SPPh3 ligand: Synthesis, crystal structure, properties. (1st February 2020)

• Record Type: Journal Article
• Authors: Wu, Huilu; Qu, Yao; Wang, Cong; Wu, Yancong; Zhao, Kun
• Is Part Of: Phosphorus, sulfur, and silicon and the related elements. Volume 195:Number 2(2020)
• Page Start: 88
• Page End: 95
• Publication Date: 2020-02-01
• Subjects: Copper(I) and Silver(I) complex -- triphenylphosphine sulfide -- luminescence -- electrochemical property -- antioxidant; Sulfur compounds -- Periodicals; Organosulfur compounds -- Periodicals; Phosphorus compounds -- Periodicals; Organophosphorus compounds -- Periodicals; Silicon compounds -- Periodicals; Organosilicon compounds -- Periodicals; 546
• DOI: 10.1080/10426507.2019.1635597
• Languages: English
• ISSNs: 1042-6507

Abstract

Abstract: Two new complexes, [Cu(SPPh3 )3 ]2 (PF6 )2 (1) and [Ag2 (SPPh3 )2 ](PF6 )2 (2), were prepared from [M(CH3 CN)4 ](PF6 )] (M = Cu and Ag) and triphenylphosphine sulfide ligand (SPPh3 ). The complexes have been characterized by elemental analysis, and UV-Vis and IR spectroscopies. Single-crystal X-ray structure analyses reveals that complexes 1 and 2 can both be described as a planar triangular configuration. Complex 1 is mononuclear and shows two crystallographically independent and chemically identical [Cu(SPPh3 )3 ] + cations. In binuclear complex 2, the sulfur atoms in SPPh3 adopt two different coordination modes, namely monodentate and monoatomic bridging. Luminescence properties investigation in solid state show that complex 1 revealed only one emission band at 471 nm (λex = 310 nm), which may be attributed to metal-to-ligand charge-transfer [MLCT]. However, complex 2 had two emission peaks which attributed to π–π* and n–π* transitions. Electrochemical experiment illustrated the complexes 1 and 2 represent irreversible Cu + /Cu 2+ or Ag + /Ag pairs, respectively. In vitro antioxidant tests showed that the complex 2 had significant antioxidant activity against hydroxyl radicals. Graphical Abstract: uf0001