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Disodium tricopper(II) tetra-kis[selenate(IV)] tetra-hydrate.

ABSTRACT: The title compound, Na(2)Cu(3)(SeO(3))(4)(H(2)O)(4), has been prepared under hydro-thermal conditions. The crystal structure contains a three-dimensional anionic framework made up from distorted [CuO(4)(H(2)O)(2)] octa-hedra ( symmetry), [CuO(4)(H(2)O)] square pyramids and trigonal-pyramidal SeO(3) units sharing common corners. The connectivity among these units leads to four- and eight-membered polyhedral rings, which by edge-sharing inter-connect into walls. A rhombus-like 16-membered polyhedral ring channel system with a longest length of approximately 14.0?Å and a shortest length of 5.3?Å is enclosed by such walls along the a axis. The water mol-ecules attached to the Cu atoms, as well as the electron lone pairs of the Se(IV) atoms, protrude into these channels. The seven-coordinated Na(+) counter-cations occupy the remaining free space of the 16-membered polyhedral ring channels. An intricate network of O-H?O hydrogen bonds further consolidates the three-dimensional structure.

SUBMITTER: Liu W

PROVIDER: S-EPMC2959769 | biostudies-literature | 2008 Oct

REPOSITORIES: biostudies-literature

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Disodium tricopper(II) tetra-kis[selenate(IV)] tetra-hydrate.

Liu Wei W Zhang Lan L Hu Kai K Cao Lixin L Su Ge G Zhao Jingtai J

Acta crystallographica. Section E, Structure reports online 20081025 Pt 11

The title compound, Na(2)Cu(3)(SeO(3))(4)(H(2)O)(4), has been prepared under hydro-thermal conditions. The crystal structure contains a three-dimensional anionic framework made up from distorted [CuO(4)(H(2)O)(2)] octa-hedra ( symmetry), [CuO(4)(H(2)O)] square pyramids and trigonal-pyramidal SeO(3) units sharing common corners. The connectivity among these units leads to four- and eight-membered polyhedral rings, which by edge-sharing inter-connect into walls. A rhombus-like 16-membered polyhedr ...[more]

PMID: 21580814

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