Synonyms: Europium,(1,10-phenanthroline)tris(1-phenyl-1,3-butanedionato)- (8CI); Europium,(1,10-phenanthroline-N1,N10)tris(1-phenyl-1,3-butanedioato-O,O')-; Europium,(1,10-phenanthroline-kN1,kN10)tris(1-phenyl-1,3-butanedionato-kO,kO')- (9CI); Europium,tris(1-phenyl-1,3-butanedionato)(1,10-phenanthroline)- (7CI);Tris(benzoylacetonato)(1,10-phenanthroline)europium