Unexpected Structural Complexity in Cesium Thorium Molybdates
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https://figshare.com/articles/dataset/Unexpected_Structural_Complexity_in_Cesium_Thorium_Molybdates/2299462
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资源简介：
Three
cesium thorium molybdates [Cs2Th(MoO4)3, Cs2Th3(MoO4)7, and
Cs4Th(MoO4)4] were
synthesized via the high-temperature solid-state method. Cs2Th(MoO4)3 crystallizes in orthorhombic space
group Pnnm, containing [Th(MoO4)3]2– chains extending along the [100] direction.
Cs2Th3(MoO4)7 is based
on an open framework with channels occupied by Cs+ ions
and running parallel through the [100] direction. It is the first
case in which thorium atoms coordinate simultaneously in three distinct
environments, namely, 7-coordinated pentagonal bipyramid, 8-coordinated
square antiprism, and 9-coordinated tricapped trigonal prism. Cs4Th(MoO4)4 is monoclinic, built from
[Th(MoO4)4]4– sheets formed
by vertex sharing of MoO4 tetrahedra and ThO8 antiprisms. The Raman and infrared spectra were recorded, and the
vibrations related to internal and external Mo–O bonds in the
MoO42– coordination geometry were discussed.
创建时间：
2014-05-07
