Cationic and Neutral complexes:
1) ligands are listed in alphabetical order using systematic name except:
a) if the ligand name ends in -ide, -ate, or ite, drop the final e and and add an o
b) others : O2– oxo; OH– hydroxo; CN– cyano; O22– peroxo; NH3 ammine; H2O aqua; NO nitrosyl; CO carbonyl
2) the number of times a ligand appears is prefixed to the ligand using
Stoichiometry Prefix Alternate Prefix use the second alternative if the preferred prefix gives an ambiguity
2 bi (preferred) or di bis
3 tri tris
4 tetra tetrakis
5 penta pentakis
6 hexa hexakis
3) structural information prefixes ligands, and can be for each ligand if necessary
cis-; trans-; fac-; mer-; μ- (ligand bridges two metals);
ηx– (x = number of C bonded to metal in an organic ligand)
4) metal is last followed by parentheses with the formal oxidation state in roman numerals
5) if cationic, counterion is the second word
Co(NH3)6Cl3
hexaamminecobalt(III) chloride
[Co(NH3)5Cl]Cl2
pentaamminechlorocobalt(III) chloride
[Co(NH3)4Cl2]Cl
cis-tetraamminedichlorocobalt(III) chloride
trans-tetraamminedichlorocobalt(III) chloride
[Co(NH3)3Cl3]
fac-triamminetrichlorocobalt(III)
mer-triamminetrichlorocobalt(III)
CuCl2(CH3NH2)2
cis-dichlorobis(methylamine)copper(II)
Ni(CO)4
tetracarbonylnickel(0)
PtCl2(CH2=CH2)
dichloro-η2-etheneplatinum(II)
(C5H5)2Fe
bis(η5-cyclopentadienyl)iron(II) [more commonly known as ferrocene]
Br2Pt-(S(CH3)2)2-PtBr2
bis(μ-dimethylsulfido)bis(dibromoplatinum(II))
Anions:
1) counterion is first word
2) use cationic rules except add -ate to the end of the metal before the oxidation state info sometimes can use the Latin root
K2[OsCl5N]
potassium pentachloronitridoosmate(VI)
Na3[Ag(S2O3)2]
sodium bis(thiosulfato)argentate(I)
Na2[Fe(CN)5NO]
sodium pentacyanonitrosylferrate(III)