•
Articles can be electroplated with silver and gold much more
smoothly and evenly from solutions of the complexes, [Ag(CN)2]
–
and [Au(CN)2]
– than from a solution of simple metal ions •
In black and white photography, the developed film is fixed by
washing with hypo solution which dissolves the undecomposed
AgBr to form a complex ion, [Ag(S2O3)2]
3– •
There is growing interest in the use of chelate therapy in medicinal
chemistry An example is the treatment of problems caused by the
presence of metals in toxic proportions in plant/animal systems