Synthesis,Characterization, and Luminescent Properties of Silver(I) Complexes based on Diphosphine Ligands and 2,9‐Dimethyl‐1,10‐phenanthroline |
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| Authors: | Yang‐Zhe Cui Yuan Yuan Hong‐Liang Han Zhong‐Feng Li Min Liu Qiong‐Hua Jin Yu‐Ping Yang Zhen‐Wei Zhang |
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| Institution: | 1. Department of Chemistry, Capital Normal University, Beijing, 100048, P. R. China;2. The College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, P. R. China;3. School of Science, Minzu University of China, Beijing 100081, P. R. China;4. Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Department of Physics, Capital Normal University, Beijing 100048, P. R. China |
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| Abstract: | Five mono‐nuclear silver(I) complexes with the ligand 2,9‐dimethyl‐1,10‐phenanthroline, namely Ag(DPEphos)(dmp)]BF4 ( 1 ), Ag(DPEphos)(dmp)]CF3SO3 ( 2 ), Ag(DPEphos)(dmp)]ClO4 ( 3 ), Ag(DPEphos)(dmp)]NO3 ( 4 ), and Ag(dppb)(dmp)]NO3 · CH3OH ( 5 ) {DPEphos = bis2‐(diphenylphosphanyl)phenyl]ether, dppb = 1,2‐bis(diphenylphosphanyl)benzene, dmp = 2,9‐dimethyl‐1,10‐phenanthroline} were characterized by X‐ray diffraction, IR, 1H NMR, 31P NMR and fluorescence spectroscopy. Their terahertz (THz) time‐domain spectra were also studied. In these complexes the silver(I), which is coordinated by two kinds of chelating ligands, adopts four‐coordinate modes to generate mono‐nuclear structures. In complexes 1 , 3 – 5 , offset π ··· π weak interactions exist between the neighboring benzene rings. In the 31P NMR spectra, there exist splitting signals (dd), which can be attributed to the coupling of the 107,109Ag–31P. All the emission peaks of these complexes are attributed to ligand‐centered excited states. |
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| Keywords: | Diphosphine 2 9‐Dimethyl‐1 10‐phenanthroline Silver Luminescence Terahertz spectra |
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