The crystal structure of Cu4Bi4Se9
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E. Makovicky
Abstract
The crystal structure of Cu4Bi4Se9, synthesized at 400 °C, was determined from single crystal X-ray diffraction data and refined to the R1 value of 0.05. The compound is orthorhombic, with a = 32.692 Å, b = 4.120 Å, and c = 12.202 Å, space group Pnma. The structure contains three square pyramidal Bi sites, an octahedrally coordinated Bi site as well as two tetrahedrally and two irregularly coordinated Cu sites. The structure is an intergrowth of PbS-like slabs with irregularly configured slabs of Bi pyramids and Cu tetrahedra. It contains covalently bonded Se2 groups. Isotypy with Cu4Bi4S9 is connected with substantial changes in coordination details for two out of five distinct Cu sites. Modular relationships to the structures of the cuprobismutite series of Cu—Bi sulfosalts can be expressed as different ways of recombination of the same large structural fragment in the structures of Cu4Bi4Se9 and of the first cuprobismutite homologue, Cu4Bi5S10.
© 2002 Oldenbourg Wissenschaftsverlag GmbH
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Artikel in diesem Heft
- The crystal chemistry of Mn3+ in the clino- and orthozoisite structure types, Ca2M33+[OH|O|SiO4|Si2O7]: A structural and spectroscopic study of some natural piemontites and “thulites” and their synthetic equivalents
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- Die Packungsdichte der Atome in Modifikationen von Kohlenstoff und Silicium
- The crystal structure of Cu4Bi4Se9
- The crystal structure of Y2P4O13 from X-ray powder diffraction data
- Dichloro-bis(2-chloro-2-phenyl-vinyl)Te(IV) and dibromo-bis(2-bromo-2-phenyl-vinyl)Te(IV): supramolecular self-assembly through different π-aryl interactions
- Isomorphous phosphonoacetic acid salts with magnesium(II), manganese(II), cobalt(II), zinc(II) and copper(II)
- Synthesis and structure of tris(triphenyltin)benzene-1,3,5-tricarboxylate and its tri-DMSO adduct
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