For example, many compounds with the formula M(ClO4)2 are coordination polymers (M = Mn, Fe, Co, Ni, Cu).
A classic case is the dicationic complex pentamminecobalt(III) perchlorate, which had resisted formation by conventional substitution reactions.
Hydrated mercury and cadmium perchlorates can be dehydrated with Cl2O6, affording anhydrous compounds.
For example, thermolysis of titanium perchlorate gives TiO2, ClO2, and O2 The titanyl species TiO(ClO4)2 is an intermediate in this decomposition.
[7] Perchlorate complexes and the reagents used to prepare them are often dangerously explosive intrinsically and especially in contact with organic compounds.