An organic electroluminescent device, which has a pair of electrodes, and at least one organic layer including a luminescent layer between the electrodes, wherein the organic layer contains at least one compound of formula (I): ##STR00001## wherein Q.sup.11 are atoms for forming a nitrogen-containing hetero ring; Z.sup.11 to Z.sup.13 each independently represents CR, wherein R represents a substituent, CH or N; n.sup.11 is 0 or 1; M.sup.11 is a metal or boron ion that may further have a ligand(s); and a compound of formula (6): ##STR00002## wherein R.sup.63 to R.sup.66 each is a hydrogen atom or a substituent; X.sup.61 to X.sup.64 and Z.sup.61 to Z.sup.66 each is CR, wherein R represents a substituent, CH or N.