New refinement of Ni5.20Sn8.7Zn4.16Cu1.04 and its non-isotypy with Ni2Sn2Zn

Clemens Schmetterer (Corresponding author), Hans Flandorfer, Herta Silvia Effenberger

Publications: Contribution to journalShort communicationPeer Reviewed

Abstract

The noncentrosymmetric space group Pinline image3m but a pseudocentric cubic crystal structure were reported for the compound Ni5.20Sn8.7Zn4.16Cu1.04 [Larsson et al. (1994). Acta Cryst. C50, 9-12]. The recently described Ni2Sn2Zn shows a closely related structure, although it is centrosymmetric and contains additional voids which are partially occupied. Therefore, a new refinement of Ni5.20Sn8.7Zn4.16Cu1.04 based on the originally published structure factors was performed. The results indicate that the structure can indeed be described in the centrosymmetric space group Pminline imagem; no justification for the absence of the inversion centre could be found within the accuracy of the available data. In comparison with Ni2Sn2Zn, slight but significant differences were confirmed; consequently, the two structures are topologically related but not isotypic.
Original languageEnglish
Pages (from-to)348-350
Number of pages3
JournalActa Crystallographica. Section C: Crystal Structure Communications
Volume70
Issue number4
DOIs
Publication statusPublished - Apr 2014

Austrian Fields of Science 2012

  • 104003 Inorganic chemistry
  • 104011 Materials chemistry
  • 105113 Crystallography

Keywords

  • rerefinement
  • Ni5.20Sn8.7Zn4.16Cu1.04
  • defect structure
  • ABSOLUTE STRUCTURE
  • FRIEDEL OPPOSITES
  • REFLECTIONS

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