Silicon alkoxide/transition metal alkoxide reactivity
Inorganic films and protector hybrids obtained by sol-gel
Article REF: M1722 V1
Silicon alkoxide/transition metal alkoxide reactivity
Inorganic films and protector hybrids obtained by sol-gel

Author : François-Xavier PERRIN

Publication date: March 10, 2007, Review date: February 1, 2016 | Lire en français

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2. Silicon alkoxide/transition metal alkoxide reactivity

Transition metal alkoxides (Ti, Zr, Al...) are much more reactive than silicon alkoxides to nucleophilic attack and thus, in particular, to hydrolysis and condensation reactions, due to :

  • the more electropositive nature of transition metals compared with that of the silicon atom;

  • the possibility of expanding the coordination sphere of metal alkoxides, unlike silicon alkoxides (table 1 ).

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