Synonyms: Erbium,tris(2,2,6,6-tetramethyl-3,5-heptanedionato-O,O')-, (OC-6-11)-; Erbium, tris(2,2,6,6-tetramethyl-3,5-heptanedionato-kO,kO')-, (OC-6-11)- (9CI); 3,5-Heptanedione,2,2,6,6-tetramethyl-, erbium complex; NSC 174891;Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)erbium