Salcomine14167-18-1100 % similar Salen94-93-948 % similar (Sp-4-2)-[2,3-bis[[[2-(hydroxy-κO)phenyl]methylene]amino-κN]-2-butenedinitrilato(2-)]nickel64696-98-644 % similar Bis(salicylidene)-1,3-propanediamine120-70-742 % similar