ORGANOMETALLIC IRIDIUM COMPLEX, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, LIGHTING DEVICE, AND SYNTHESIS METHOD OF ORGANOMETALLIC IRIDIUM COMPLEX

摘要

PROBLEM TO BE SOLVED: To provide a high-purity organometallic iridium complex.SOLUTION: The organometallic iridium complex, illustrated by formula (100), includes Ir and a plurality of ligands cyclometallated to Ir. Each of the plurality of ligands includes a heteroaromatic ring having a nitrogen atom coordinated to Ir. In LC-MS analysis of the organometallic iridium complex, an impurity of the organometallic iridium complex including a monochlorinated ligand among the plurality of ligands is 0.1% or less by quantitating using an area normalization method with a PDA detector.SELECTED DRAWING: None