The present invention is directed to a novel phosphorescent compound
formed by synthesizing an orthometallated complex by using
easily-synthesized ligands. The invention is further directed to an
electroluminescent device having high luminous efficiency by using the
phosphorescent compound. Moreover, the invention is also directed to a
light-emitting device operating at a low voltage by using the
electroluminescent device. According to the present invention, a
phosphorescent compound represented by general formula [formula 1] is
synthesized. Further, an electroluminescent device containing the
phosphorescent compound is formed. In order to generate phosphorescent
emission more efficiently, a heavy metal is preferably used as a central
metal from the perspective of heavy atom effects. Therefore, one feature
of the present invention is that the central metal M in the below general
formula [formula 1] is iridium or platinum ##STR00001##