1. Synthesis, Characterization, and Luminescent Properties of Silver(I) Complexes based on Diphosphine Ligands and 6,7-Dicyanodipyridoquinoxaline.
- Author
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Wang, Yu, Cui, Yang‐Zhe, Li, Zhong‐Feng, Liu, Min, Yang, Yu‐Ping, Zhang, Zhen‐Wei, Xin, Xiu‐Lan, and Jin, Qiong‐Hua
- Subjects
SILVER compounds ,CHEMICAL synthesis ,LUMINESCENCE ,COMPLEX compounds ,DIPHOSPHINE ,LIGANDS (Chemistry) ,X-ray diffraction - Abstract
Five mono-nuclear silver (I) complexes with 6,7-dicyanodipyridoquinoxaline ligand, namely {[Ag(DPEphos)(dicnq)]NO
3 }2 . CH3 OH (1), [Ag(DPEphos)(dicnq)]BF4 .CH3 OH (2), [Ag(XANTphos) (dicnq)]CF3 SO3 (3), {[Ag(XANTphos)(dicnq)]NO3 }2 (4) and [Ag(XANTphos)(dicnq)]ClO4 .CH2 Cl2 (5) {DPEphos = bis[2-(diphenylphosphanyl) phenyl]ether, dicnq = 6,7-dicyanodipyridoquinoxaline, XANTphos = 9,9-dimethyl-4,5-bis(diphenylphosphanyl)xanthene} were characterized by X-ray diffraction, IR,1 H NMR,31 P NMR, fluorescence spectra and terahertz time-domain spectra (THz-TDS). In the five complexes the AgI , which is coordinated by two kinds of chelating ligands, adopts four-coordinate modes to generate mono-nuclear structures. The C-H...π interactions lead to formation of a 1D infinite chain for complexes 2 and 3. The crystal packing of complexes 1 and 5 reveal that they form 3D supermolecular network by several pairs of C-H...π interactions. The emissions of these complexes are attributed to ligands-centered [π-π8 ] transition based on both of the P-donor and N-donor ligands. [ABSTRACT FROM AUTHOR]- Published
- 2017
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