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Chemistry · Glossary

What is Transmetalation?

Definition 20.10 University Chemistry — Year 2 · Chapter 20 — Organometallic Catalysis: Elementary Steps and Cycles

A transmetalation transfers an organic group from one metal (or metalloid: boron, zinc, tin) to another, usually in exchange for a halide.

The elementary steps of organometallic catalysis. Oxidative addition: oxidation state, count and coordination number +2; reductive elimination: -2. Migratory insertion: count -2, oxidation state unchanged; -hydride elimination: the reverse. Transmetalation: an organic group moves to the metal from boron, zinc or tin.
The elementary steps of organometallic catalysis. Oxidative addition: oxidation state, count and coordination number +2+2; reductive elimination: −2-2. Migratory insertion: count −2-2, oxidation state unchanged; β\beta-hydride elimination: the reverse. Transmetalation: an organic group moves to the metal from boron, zinc or tin.
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