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    The hydrolysis of 3-ammoniumpropylbis(catecholato)silicate 1, giving two different silica-based materials containing different amounts of tris(catecholato)silicate, is reported. The latter species can be formed through an attack of catechol to the silicon atom in the pentacoordinate complex, in which the silicon-carbon bond is further activated toward electrophilic proton cleavage. The Knoevenagel reaction was used as a probe in order to test the availability of functional groups on the surface of such materials.


    Vincenzo Campisciano, Benedetto Taormina, Alberto Spinella, Leonarda F Liotta, Francesco Giacalone, Michelangelo Gruttadauria. First Evidence of Tris(catecholato)silicate Formation from Hydrolysis of an Alkyl Bis(catecholato)silicate. Molecules (Basel, Switzerland). 2022 Apr 14;27(8)

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    PMID: 35458719

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