Synthesis, photoluminescence and computational study of rhenium(I) diimine complexes with [1,3,4]oxadiazole substituted 2,2′-bipyridine ligands
作者:Hong-Yan Li、Tian-Yi Li、Quan Liu、Qiu-Lei Xu、Cheng-Cheng Wang、Song Zhang、Chen Lin、Wei Huang、You-Xuan Zheng、Xiu-Qiang Wang
DOI:10.1016/j.jorganchem.2013.06.024
日期:2013.10
corresponding rhenium(I) Re(CO)3Cl(L) complexes (1–4) were synthesized and characterized by the elemental analysis, IR, 1H NMR and UV–vis spectroscopy. The complex 2 is also determined by the crystal structure analysis. In the UV–vis spectra complexes 1, 2 and 4 show intense spin-allowed intraligand (π→π*) transitions and weak metal to ligand charge-transfer dπ (Re)→π* (diimine) (MLCT) bands in THF solution
四个联吡啶配体在不同位置被[1,3,4]恶二唑部分取代,4,4'-双(5-苯基-[1,3,4]恶二唑-2-基)-2,2'-联吡啶(L1),4,4′-双[5-(4-叔丁基-苯基)-[1,3,4]恶二唑-2-基] -2,2′-联吡啶(L2),5,5 ′-双(5-苯基-[1,3,4]恶二唑-2-基)-2,2'-联吡啶(L3)和5,5'-双[5-(4-叔丁基-苯基) ) - [1,3,4]恶二唑-2-基] -2,2'-联吡啶(L4),和它们相应的铼(I)的Re(CO)3 Cl(上大号)配合物(1 - 4)的合成并通过元素分析,IR,1 H NMR和UV-vis光谱进行表征。复杂通过晶体结构分析还确定了图2。在UV-vis光谱络合物1,2和4示出强烈的自旋容许intraligand(π→π*)转换和弱金属到配位体电荷转移dπ(Re)的→π*(二亚胺)(MLCT)的THF溶液频带。配合物1,2和3示出