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Janus‐Cube Octasilsesquioxane: Facile Synthesis and Structure Elucidation

2016; Wiley; Volume: 55; Issue: 32 Linguagem: Inglês

10.1002/anie.201602413

1521-3773

Naoki Oguri, Yasunobu Egawa, Nobuhiro Takeda, Masafumi Unno,

Polyoxometalates: Synthesis and Applications

Abstract 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.