Siloxide

Siloxides are chemical compounds with the formula R3SiOM, where R is usually an organic group and M is usually a metal cation. Also called silanoates, they are derived by deprotonation of silanols. They also arise by the degradation of siloxanes by base:[1]

R3SiOSiR3 + 2 NaOH → 2 R3SiONa + H2O

Cleavage of cyclic siloxanes affords siloxides:

(Me2SiO)3 + MeLi → Me3SiOSiMe2OSiMe2OSiMe2OLi

These anions function as ligands for metal ions, forming complexes similar to metal alkoxides. Triphenylsiloxide is a common derivative useful for generating metal complexes. A very bulky siloxide is tert-butyl3SiO−, sometimes called silox.

References

  1. ↑ Clemens Krempner "Role of Siloxides in Transition Metal Chemistry and Homogeneous Catalysis" Eur. J. Inorg. Chem. 2011, 1689–1698. doi:10.1002/ejic.201100044
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