an electroluminescence device having a layer containing a specific metal coordination compound is provided . the metal coordination compound is represented by formula below : ml m l ′ n , wherein m is a metal atom of ir , pt , rh or pd ; l and l ′ are mutually different bidentate ligands ; m is 1 , 2 or 3 and n is 0 , 1 or 2 with the proviso that m + n is 2 or 3 ; a partial structure mlm is represented by formula shown below and a partial structure ml ′ n is represented by formula or shown below : at least one of the optional substituent of the cyclic groups , and the cyclic groups cyc 1 and cyc2 include an aromatic group capable of having a substituent represented by the following formula : the metal coordination compound having the aromatic group is effective in providing high - efficiency luminescence and long - term high luminance .