ChemInform Abstract: Reexamination of the Crystal Structure of Na3Sb7O9Se3×Sb0.319( H2O,OH)3

Autor:	Izumi Nakai, Ritsuro Miyawaki, Kozo Nagashima
Rok vydání:	2010
Předmět:	Crystallography Chemistry Hexagonal crystal system Group (periodic table) Atom Hydrothermal synthesis General Medicine Crystal structure Single crystal
Zdroj:	ChemInform. 25
ISSN:	0931-7597
DOI:	10.1002/chin.199413003
Popis:	The crystal structure of Na3Sb7O9Se3·Sb0.319(H2O,OH)3 has been determined using a single crystal prepared by hydrothermal synthesis to a conventional R = 0.043, Rw = 0.039 for 1556 reflections. It is hexagonal with a space group of P63; a = 14.422(4), c = 5.5448(8) A, Z = 2. The structure consists of infinite tunnels formed by the linkages of SbO3 pyramids. SbSe3 pyramids among the tunnels connect the tunnels to form a three-dimensional structure. Na atoms were on the inside wall of the tunnel. It was revealed that statistically occupied Sb(H2O,OH)6-octahedra are located at the center of the tunnel. Two statistical sites for the Sb atom of the SbSe3 pyramids are pointed out.
Databáze:	OpenAIRE
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