A series of Cu(I) mixed-ligand complexes containing dmp (2,9-dimethyl-1,10-phenanthroline) and one of simple diphosphine ligands (Ph2P(CH2)nPPh2) were prepared. Among the complexes, [Cu(dppp)(dmp)]PF6 (n = 3) and [Cu2(dppb)2(dmp)2](PF6)2 (n = 4) were characterized by X-ray structure analyses. The dppp complex has been characterized as a mononuclear complex, while [Cu2(dppb)2(dmp)2]2+ exists as a dinuclear complex in which two dppb ligands bridge between the two Cu(I) atoms. Although the distorted tetrahedral structures around the central metals of the two complexes are similar, the P–Cu–P angles are different between the two complexes. All of the series of complexes show photoluminescence in solution, and the intensity of the luminescence increases with n (n = 2–4). The non-radiative rate constants of the complexes decrease markedly with n although radiative rate constants of the complexes are similar.
制备了一系列含有 dmp (2,9-二甲基-1,10-
菲咯啉) 和一个简单二
膦配体 (Ph2P(
CH2)nPPh2) 的 Cu(I) 混合
配体配合物。在配合物中,[Cu(dppp)(dmp)]PF6 (n = 3) 和 [Cu2(dppb)2(dmp)2](PF6)2 (n = 4) 通过 X 射线结构分析进行了表征。 dppp 配合物被表征为单核配合物,而 [Cu2(dppb)2(dmp)2]2+ 作为双核配合物存在,其中两个 dppb
配体在两个 Cu(I) 原子之间桥接。尽管两种配合物中心
金属周围的扭曲四面体结构相似,但两种配合物的 P-Cu-P 角不同。所有系列的配合物在溶液中均表现出光致发光,并且发光强度随着n (n = 2–4) 的增加而增加。尽管配合物的辐射速率常数相似,但配合物的非辐射速率常数随着n的增加而显着降低。