Chemistry

Crafting Small Siloxanes

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Science  30 Jun 2000:
Vol. 288, Issue 5475, pp. 2287
DOI: 10.1126/science.288.5475.2287a

One route that chemists have taken to modify the catalytic properties of zeolites (aluminosilicates) is to anchor small transition molecule catalysts within their channels. Yoshizawa et al. have now turned the tables on this kind of “ship in a bottle” chemistry. They have enlisted the multinuclear platinum compound 3 to serve as a nanoscale reaction vessel in which to construct an elusive intermediate in silica sol-gel chemistry, the trisilanol 1 (in this case, R is a phenyl group). The individual phenylmethoxysilane reactants can enter the cage, but once the trisilanol forms, it cannot escape—but must suffer detection by mass spectrometry and nuclear magnetic resonance.—PDS

J. Am. Chem. Soc., in press.

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