Cationic two-dimensional inorganic networks of antimony oxide hydroxide for Lewis acid catalysis

Dalton Transactions : an International Journal of Inorganic Chemistry
Jinlin Yin, Honghan Fei

Abstract

We have successfully synthesized a rare example of inorganic layered materials possessing a positive charge, which is well outside the isostructural set of layered double hydroxides. This layered architecture consists of two-dimensional corrugated [Sb2O2(OH)]+layers with linear α,ω-alkanedisulfonate anions residing in the interlamellar space. This cationic material displays a chemical robustness under highly acidic aqueous conditions (pH = 1). Combining the robust nature and the high density of SbIIIsites on the exposed crystal facets, our cationic layered material is an efficient, recyclable catalyst for cyanosilylation of benzaldehyde derivatives with trimethylsilyl cyanide. In addition, the Lewis acidity of the SbIIIsites also catalyzes the ketalization of carbonyl groups under "green" solvent-free conditions.

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Methods Mentioned

BETA
X-ray
chemical treatment
infrared spectroscopy

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