Synonyms: Holmium,tris(2,4-pentanedionato)- (6CI,7CI,8CI); Holmium,tris(2,4-pentanedionato-O,O')-, (OC-6-11)-; Holmium, tris(2,4-pentanedionato-kO,kO')-, (OC-6-11)- (9CI); Holmium trisacetylacetonate;Tris(2,4-pentanedionato)holmium; Tris(acetylacetonato)holmium