10.1021/cm070038b.s001
Jason C. Clark
Jason C.
Clark
Craig E. Barnes
Craig E.
Barnes
Reaction of the Si<sub>8</sub>O<sub>20</sub>(SnMe<sub>3</sub>)<sub>8</sub> Building Block with Silyl Chlorides:
A New Synthetic Methodology for Preparing Nanostructured
Building Block Solids
American Chemical Society
2007
silyl chloride groups
building blocks
Si 8O building blocks
linkage
building block matrices
material
spherosilicate Si 8O
Si 8O Building Block
Preparing Nanostructured Building Block SolidsA series
surface area matrices
2007-06-26 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Reaction_of_the_Si_sub_8_sub_O_sub_20_sub_SnMe_sub_3_sub_sub_8_sub_Building_Block_with_Silyl_Chlorides_A_New_Synthetic_Methodology_for_Preparing_Nanostructured_Building_Block_Solids/3000025
A series of silicate based “building block” (bb) materials has been synthesized via the reaction of the
cubic, spherosilicate Si<sub>8</sub>O<sub>20</sub>(SnMe<sub>3</sub>)<sub>8</sub> with the chlorosilanes HSiCl<sub>3</sub>, Me<sub>2</sub>SiCl<sub>2</sub>, and SiCl<sub>4</sub>. The resulting
materials are amorphous, porous, high surface area matrices composed of intact Si<sub>8</sub>O<sub>20</sub> building blocks
that are cross-linked together through a series of siloxane linkages formed from the reaction of trimethyltin
groups on the spherosilicate precursor and the silyl chloride groups. These siloxane-based linkages provide
chemically robust, covalent connections between building blocks. The distribution of chemically distinct
linking groups may be influenced by manipulating initial stoichiometries, changing solvents, varying
temperature, and using different linking silyl chlorides. General procedures for preparing silicate platforms
having linking groups with specific connectivities to surrounding building blocks in the matrix are
described. The synthetic strategy for preparing the building block matrices described here forms the
basis for preparing a wide range of nanostructured solids in which the identity and distribution of linking
groups can be controlled by design. Applications to heterogeneous catalysts are discussed.