Zeotype ionic crystal of Cs5[Cr3O(OOCH)6(H2O)3][alpha-CoW12O40].7.5H2O with shape-selective adsorption of water

Sayaka Uchida; Noritaka Mizuno

doi:10.1021/ja038063f

Zeotype ionic crystal of Cs5[Cr3O(OOCH)6(H2O)3][alpha-CoW12O40].7.5H2O with shape-selective adsorption of water

J Am Chem Soc. 2004 Feb 18;126(6):1602-3. doi: 10.1021/ja038063f.

Authors

Sayaka Uchida¹, Noritaka Mizuno

Affiliation

¹ Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

PMID: 14871069
DOI: 10.1021/ja038063f

Abstract

A polyoxometalate-macrocation ionic crystal of Cs5[Cr3O(OOCH)6(H2O)3][alpha-CoW12O40].7.5H2O (1a) was synthesized by the complexion of an inorganic metal-oxide cluster of [alpha-CoW12O40]6- and a macrocation of [Cr3O(OOCH)6(H2O)3]+. About 50% of the water of crystallization in 1a was desorbed by the evacuation to form phase 1b, and the crystallinity and crystal structure was essentially maintained by the transformation. 1b adsorbed water into the solid bulk but excluded larger alcohols. 1b was easily reusable for the separation of only water in the azeotropic mixture of ethanol and water.