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Janus‐Cube Octasilsesquioxane: Facile Synthesis and Structure Elucidation
Author(s) -
Oguri Naoki,
Egawa Yasunobu,
Takeda Nobuhiro,
Unno Masafumi
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201602413
Subject(s) - janus , siloxane , cube (algebra) , janus particles , silanol , chemistry , nanotechnology , coupling (piping) , materials science , organic chemistry , composite material , catalysis , geometry , mathematics , polymer
A perfect “Janus‐cube” octasilsesquioxane, a nanometer‐scale Janus particle with two different types of substituents, was synthesized through the cross‐coupling of a “half‐cube” cyclic sodium siloxanolate with another half‐cube cyclic fluorosiloxane. The structure was confirmed by X‐ray crystallography to be a Janus cube. The overall synthesis is simple and does not require drastic separation methods compared with previous methods. The synthesis of the Janus cube demonstrates a novel siloxane bond‐forming reaction involving the coupling a silanol salt and fluorosilane. The reaction is mild, does not result in acid generation, and could be applied to the construction of other novel siloxane compounds.