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Many semiconductors are produced from trimethylgallium, trimethylindium, trimethylaluminium, and trimethylantimony. These volatile compounds are decomposed along with ammonia, arsine, phosphine and related hydrides on a heated substrate via metalorganic vapor phase epitaxy (MOVPE) process in the production of light-emitting diodes (LEDs).

Catalysis
Organometallic complexes are commonly used in catalysis, especially in cross-coupling reactions that form carbon-carbon bonds. Perhaps among the most infamous examples of organometallic catalysis is the Suzuki-Miyaura coupling reaction, involving a palladium catalyst. Recent publications have demonstrated advancement of the Suzuki-Miyaura reaction using carbon-metal frameworks. These strong-field carbon ligands provide ample electron density for the metal catalyst to participate in redox chemistry. In addition, organometallic complexes bearing chiral ligands can participate in asymmetric catalysis. Chiral N-heterocyclic carbenes have received popular attention as organometallic ligands for catalysis due to their ability to produce stereoselective products. Another prominent cross-coupling reaction involving the use of organometallic complexes is the Buchwald-Hartwig cross-coupling reaction. The Buchwald-Hartwig reaction is a palladium-catalyzed reaction, providing an efficient method for producing aryl amines from aryl halides.

Organometallic Reactions
The synthesis of many organic molecules are facilitated by organometallic complexes. Sigma-bond metathesis is a synthetic method for forming new carbon-carbon sigma bonds. Sigma-bond metathesis is typically used with early transition-metal complexes that are in their highest oxidation state. Using transition-metals that are in their highest oxidation state prevents other reactions from occurring, such as oxidative addition. In addition to sigma-bond metathesis, olefin metathesis is used to synthesize various carbon-carbon pi bonds. Neither sigma-bond metathesis or olefin metathesis change the oxidation state of the metal. Many other methods are used to form new carbon-carbon bonds, including beta-hydride elimination and insertion reactions.