A process for preparing a compound having the formula L
2
IrL′ is provided. The process comprises:
combining
and L′ in the presence of an organic solvent to form a mixture, wherein L is a suitable carbene ligand precursor coordinated to Ir; and L′ is a bidentate ligand or two monodentate ligands, and L is different from L′;
Also provided is a process for preparing a compound having the formula
The process comprises: (a) combining L, a carbene ligand precursor, with an organic solvent; (b) maintaining the mixture of step (a) at a temperature from about 175° C. to less than the boiling point of the organic solvent in (a).
A process for preparing a compound with the formula L
3
Ir is also provided. This process comprises combining
and L in the presence of alcohol and a base to form a mixture, wherein L is a bidentate ligand that may form a five-membered chelate ring.
提供了一种制备具有公式
L2IrL′的化合物的方法。该方法包括:在有机溶剂存在下结合L和L′以形成混合物,其中L是适当的卡宾
配体前体与Ir配位;L′是双齿
配体或两个单齿
配体,且L与L′不同;还提供了一种制备具有公式的化合物的方法。该方法包括:(a)将L,卡宾
配体前体与有机溶剂结合;(b)将步骤(a)的混合物保持在约175℃至有机溶剂沸点以下的温度下。还提供了一种制备具有公式L3Ir的化合物的方法。该方法包括在醇和碱的存在下结合L和L以形成混合物,其中L是可能形成五元螯合环的双齿
配体。