(a) Bromobis(ethylenediamine)nitrito–O–cobalt(III)
(b) Hexaamminecobalt(III) hexanitrito–O–cobaltate(III)
(c) Pentaamminecarbonatocobalt(III) chloride
(d) Tetraamminedichloroplatinum(IV) tetrachloroplatinate(II)
(e) Tris(ethylenediamine)cobalt(III) sulphate
