Exploring the Chemistry and Photophysics of Substituted Picolinates Positional Isomers in Iridium(III) Bisphenylpyridine Complexes
Exploring the Chemistry and Photophysics of Substituted Picolinates Positional Isomers in Iridium(III) Bisphenylpyridine Complexes
复制标题
DOI：
10.1021/acs.organomet.7b00179
复制
发表时间：
2017-08-14
期刊：
影响因子：
2.8
通讯作者：
Beeby, Andrew
中科院分区：
文献类型：
--
作者：
Davidson, Ross;Hsu, Yu-Ting;Beeby, Andrew
描述了一种简单而通用的修饰铱配位的吡啶甲酸酯配体的路线。使μ-氯铱（（CN）-N-Lambda）二聚体（其中（CN）-N-Lambda是基于苯基吡啶的配体）与溴吡啶甲酸（HpicBr）反应，得到相应的铱（（CN）-N-Lambda）（2）（picBr）络合物（1-4和11），其容易地通过Sonogashira反应改性，得到八种炔取代的吡啶甲酸酯络合物（5-10、12和13）。这些配合物的发光行为表明，吡啶甲酸酯环上的取代位置对物理行为以及反应活性都有影响。
A simple and versatile route for modifying picolinate ligands coordinated to iridium is described. Reacting a mu-chloro iridium((CN)-N-Lambda) dimer (where (CN)-N-Lambda is a phenyl pyridine-based ligand) with bromopicolinic acid (HpicBr) yields the corresponding iridium((CN)-N-Lambda)(2)(picBr) complexes (1-4 and 11), which were readily modified by a Sonogashira reaction to give eight alkyne-substituted picolinate complexes (5-10, 12, and 13). The luminescent behavior of these complexes shows that the position of substitution about the picolinate ring has an effect on both photophysical behavior as well as the reactivity.