A metal chelate compound of the formula
Ln-M+n (I)
wherein M represents a metal; n is an integer, or number of from 1 to 3; and L is a ligand of
wherein Ar is aryl; X is selected from the group consisting of oxygen, sulfur, and selenium; N is nitrogen; O is oxygen; and Z is a suitable aromatic component.
式中的金属螯合物
Ln-M+n (I)
其中 M 代表金属;n 是整数,或 1 至 3 的数字;L 是下列配体的配体
其中 Ar 是芳基;X 选自由氧、硫和硒组成的组;N 是氮;O 是氧;Z 是合适的芳香族组分。