The chloride ion can be also exchanged with more complex anions such as the hexathiocyanatochromate(III), yielding a pink compound with formula [Co(NH3)6] [Cr(SCN)6], or the ferricyanide ion.
The chloride ion can be exchanged for other anions like hexathionocyanatochromate(III), creating a pink compound with the formula [Co(NH3)6][Cr(SCN)6] or ferricyanide ion.