A gas-phase study on the cyclometallation of a series of Cp*Ir(III) complexes bearing bidentate pyrimidine ligands
作者:Yanik Becker、Maximilian Huber、Sabine Becker、Yu Sun、Gereon Niedner-Schatteburg、Werner R. Thiel
DOI:10.1016/j.jorganchem.2021.122063
日期:2021.12
A concerted approach of synthesis and gas phase experiments characterizes the relative cyclometallation barriers of a series of cationic η5-Cp* iridium(III) compounds. The common feature of the investigated compounds is a bidentate N,N’-donor ligand possessing a pyridine site functionalized with a 5-butylpyrimidin-2-yl ring in the 2-position. In addition, the pyridine ring was functionalized with electron-donating
合成和气相实验的协同方法表征了一系列阳离子 η 5的相对环金属化势垒-Cp* 铱(III)化合物。所研究化合物的共同特征是双齿 N,N'-供体配体,其具有在 2-位上用 5-丁基嘧啶-2-基环官能化的吡啶位点。此外,吡啶环被给电子或吸电子基团官能化。通过NMR和IR光谱以及元素分析表征化合物。为了测量环金属化的相对势垒,进行了碰撞诱导解离(CID)实验,这揭示了相对势垒与吡啶环上取代基的性质和位置的明显依赖性。