摘要
A new silver(I)complex{Ag2(dppm)2[N(CN)2]}2[μ-N(CN)2]2(1)with chelate ligand bis(diphenylphosphino)methane(dppm)and bridging ligand dicyanamide(N(CN)2)was carefully synthesized and fully characterized by single-crystal X-ray crystallography,IR spectrometry,high-resolution mass spectrometry,thermal analysis and 1H NMR.According to the crystal structure analysis,this complex could be considered as two binucleate moieties{Ag2(dppm)2[N(CN)2]}+linked by two bridging anionic ligands N(CN)2-.It exhibits thermochromic property in solid state.The dependence of color or emission of substance on temperature is known as thermochromism.Various temperature luminescences of complex 1 are tested.Along with the reduction of temperature from 298 K to 77 K,a noticeable emission enhancement as well as lifetime extension is observed.
基金
supported by the China Postdoctoral Science Foundation(2017M612174)
the Science and Technology Project of University of Jinan(XKY1826)。
