title: Preparation, structural characterization, and ion-exchange properties of two new zeolite-like 3D frameworks constructed by ε-Keggin-type polyoxometalates with binding metal ions, H11.4[ZnMo12O40Zn2]1.5- and H7.5[Mn0.2Mo12O40Mn2]2.1-.
abstract: Two new ε-Keggin-type polyoxometalate-based 3D frameworks, Na1.5H11.4[ε-Zn(II)Mo(V)10.9Mo(VI)1.1O40{Zn(II)}2] and (NH4)2.1H7.5[ε-Mn(II)0.2Mo(V)6Mo(VI)6O40{Mn(II)}2], are prepared, and their structures are determined by powder X-ray diffraction, Fourier transform infrared, Raman spectroscopy, and elemental analysis. ε-Keggin-type polyoxomolybdate units, [ε-ZnMo12O40] and [ε-Mn0.2Mo12O40], are linked with Zn(2+) and Mn(2+), respectively, in a tetrahedral fashion to form 3D frameworks. They show zeolite-like ion-exchange properties and redox properties. The ε-Keggin-based 3D framework shows high chemical composition diversity and can incorporate different elements in the framework.
authors.affiliation: Catalysis Research Center, Hokkaido University , N-21, W-10 Kita-ku, Sapporo 001-0021, Japan.
authors.forename: Zhenxin
authors.initials: Z
authors.lastname: Zhang
authors.forename: Masahiro
authors.initials: M
authors.lastname: Sadakane
authors.forename: Toru
authors.initials: T
authors.lastname: Murayama
authors.forename: Norihito
authors.initials: N
authors.lastname: Sakaguchi
authors.forename: Wataru
authors.initials: W
authors.lastname: Ueda