insertion

https://doi.org/10.1351/goldbook.I03058
  1. A chemical reaction or transformation of the general type: $$\ce{X-Z + Y -> X-Y-Z}$$ in which the connecting atom or group $\ce{Y}$ replaces the bond joining the parts $\ce{X}$ and $\ce{Z}$ of the reactant $\ce{XZ}$. An example is the carbene insertion reaction:
    molecule
    The reverse of an insertion is called an extrusion.
    See also: α-addition
    Source:
    PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1125 [Terms] [Paper]
  2. A general term given to a reaction involving the transfer of a guest atom, ion or molecule into a host crystal lattice.
    See: topochemical reaction, topotactic reaction
    Source:
    PAC, 1994, 66, 577. (Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)) on page 583 [Terms] [Paper]
Citation: 'insertion' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.I03058 RIS BibTex EndNote
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