Siloxide

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Group of chemical compounds

title: "Siloxide" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["organosilicon-compounds"] description: "Group of chemical compounds" topic_path: "general/organosilicon-compounds" source: "https://en.wikipedia.org/wiki/Siloxide" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Group of chemical compounds ::

Siloxides are chemical compounds with the formula R3SiOM, where R is usually an organic group and M is usually a metal cation. Also called silanolates, they are derived by deprotonation of silanols. They also arise by the degradation of siloxanes by base: :R3SiOSiR3 + 2 NaOH → 2 R3SiONa + H2O

Cleavage of cyclic siloxanes affords siloxides: :(Me2SiO)3 + MeLi → Me3SiOSiMe2OSiMe2OLi

These anions function as ligands for metal ions, forming complexes similar to metal alkoxides. Sodium trimethylsiloxide is useful for generating metal complexes by salt metathesis reactions. A very bulky siloxide is tert-butyl3SiO−, sometimes called silox.

Siloxides are weaker net donors than alkoxides because pπ-d donation has to compete with backbonding from the oxygen atom into the low-lying Si-C σ* orbitals.

References

References

  1. (2011). "Role of Siloxides in Transition Metal Chemistry and Homogeneous Catalysis". Eur. J. Inorg. Chem..

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organosilicon-compounds