两个含有混磷配体的发光银(Ⅰ)配合物的合成和表征（英文）

Syntheses and Characterization of Two Luminescent Silver(Ⅰ) Complexes Based on Mixed Phosphine Ligands

合成了两个新的银(Ⅰ)配合物,[Ag2Br2(DPEphos)2(dppe)](1)和[Ag(DPEphos)(dppe)]NO3(2)(DPEphos=双[(2-二苯膦基)苯基]醚;dppe=1,2-双(二苯膦)乙烷),通过红外光谱、X-射线单晶衍射、核磁共振氢谱、磷谱和荧光光谱进行分析和表征。1是由Ag Br,DPEphos和dppe以2∶2∶1的比例混合反应得到的双核化合物,dppe通过2个P原子桥连2个Ag原子,而2是由Ag NO3,DPEphos和dppe以1∶1∶1的比例混合反应得到的简单的单核化合物,Ag原子与DPEphos和dppe配体螯合。在配合物2的膦谱中,存在4个分裂峰(双峰或者三重峰)。荧光光谱表明所有的发射峰均源于配体中的π-π*跃迁。

Abstract： Two novel silver（I） complexes [Ag2Brz（DPEphos）2（dppe）]（1） and [Ag（DPEphos）（dppe）]NO3（2） （DPEphos= bis [2-（diphenylphosphino）phenyl]ether, dppe =bis （diphenylphosphino）ethane） have been synthesized and characterized by IR, single-crystal X-ray diffraction, 1H NMR, 31p NMR spectroscopy and fluorescence spectra. 1 is comprised of AgBr, DPEphos and dppe in 2：2：1 molar ratio generating a binuclear complex. The dppe ligand bridges two Ag atoms through two P atoms in 1. While, 2 is obtained by the reactions of AgNO3, DPEphos and dppe in 1：1：1 molar ratio generating a sample mono-nuclear complex. The Ag（I） atom is chelated by DPEphos and dppe ligand. In the 31p NMR spectra of 2, there are four splitting signals （doublets or triplets）. The luminescent spectra show that the origin of these emissions all involves emissive state derived from ligand centered π-π＊ transition. CCDC： 1043375, 1; 1043376, 2.