Journal of Sol-Gel Science and Technology

, Volume 89, Issue 1, pp 37–44 | Cite as

Single-step synthesis of disiloxanetetraols

  • Hisayuki Endo
  • Nobuhiro Takeda
  • Masafumi UnnoEmail author
Brief Communication: Nano-structured materials (particles, fibers, colloids, composites, etc.)


Disiloxanetetraols are very useful synthetic precursors for various siloxane compounds. In addition, they are effective starting materials in sol–gel chemistry for the fabrication of well-defined structures. We herein described a facile single-step synthesis of disiloxanetetraols ([RSi(OH)2]2O) with various substituents (R = Pr, i-Pr, i-Bu, cyclopentyl, hexyl, cyclohexyl, Ph) by hydrolytic condensation of trichlorosilanes, where the reaction was quenched at an early stage. [PrSi(OH)2]2O has the smallest substituents among the disiloxanetetraols reported so far. The results of X-ray crystallography of [C5H9Si(OH)2]2O showed a supramolecular sheet structure formed by intermolecular hydrogen bonding. We also found that disiloxanetetraols and cyclotetrasiloxanetetraols with isobutyl groups can be synthesized from isobutyltrichlorosilane by simply changing the quenching time and reaction temperature.


Silanol Synthesis Monomer Well-defined materials Crystal structure Supramolecular aggregates 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Chemistry and Chemical Biology, Faculty of Science and TechnologyGunma UniversityKiryuJapan

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