Editing Coordination complex (section)

===Industry===
[[Homogeneous catalysis]] is a major application of coordination compounds for the production of organic substances.  Processes include [[hydrogenation]], [[hydroformylation]], [[oxidation]].  In one example, a combination of titanium trichloride and triethylaluminium gives rise to [[Ziegler–Natta catalyst]]s, used for the [[polymerization]] of ethylene and propylene to give polymers of great commercial importance as fibers, films, and plastics.

Nickel, cobalt, and copper can be extracted using [[hydrometallurgy|hydrometallurgical processes]] involving complex ions. They are extracted from their ores as [[Metal ammine complex|ammine]] complexes. Metals can also be separated using the selective precipitation and solubility of complex ions. Cyanide is used chiefly for extraction of gold and silver from their ores.

[[Phthalocyanine]] complexes are an important class of pigments.