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Disodium tricopper(II) tetra­kis[selenate(IV)] tetra­hydrate

The title compound, Na(2)Cu(3)(SeO(3))(4)(H(2)O)(4), has been prepared under hydro­thermal conditions. The crystal structure contains a three-dimensional anionic framework made up from distorted [CuO(4)(H(2)O)(2)] octa­hedra ([Image: see text] symmetry), [CuO(4)(H(2)O)] square pyramids and trigonal-...

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Detalles Bibliográficos
Autores principales: Liu, Wei, Zhang, Lan, Hu, Kai, Cao, Lixin, Su, Ge, Zhao, Jingtai
Formato: Texto
Lenguaje:English
Publicado: International Union of Crystallography 2008
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2959769/
https://www.ncbi.nlm.nih.gov/pubmed/21580814
http://dx.doi.org/10.1107/S160053680803434X
Descripción
Sumario:The title compound, Na(2)Cu(3)(SeO(3))(4)(H(2)O)(4), has been prepared under hydro­thermal conditions. The crystal structure contains a three-dimensional anionic framework made up from distorted [CuO(4)(H(2)O)(2)] octa­hedra ([Image: see text] 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 inter­connect 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 mol­ecules 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.