The name/synonym for ligand FE (curated from ChEBI, PubChem, and PDB databases):

1IRON(3+)
2IRON, ION (FE(3+))
3FERRIC IRON
4FE(3+)
5IRON(III) CATION
6IRON(3+) ION
7FE (III) ION
8FERRIC ION
9FE3+
10FE(III)