The IUPAC naming follows specific rules: (1) Cation is named before anion; (2) Ligands are named alphabetically before the central metal; (3) Anionic ligands end with '-o' (chlorido, cyanido, oxalato); (4) Neutral ligands use special names: ammine for NH₃, aqua for H₂O; (5) Prefixes di-, tri-, tetra- indicate number of ligands; (6) For anionic complexes, metal name ends with '-ate' (ferrate, palladate); (7) Oxidation state is indicated in Roman numerals in parentheses.