Flux synthesis and structural and spectroscopic characterization of a cobalt europium trisilicate

Maria Wierzbicka-Wieczorek*, Christoph Lenz, Gerald Giester

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

A trisilicate with a new structure type, CoEu2Si 3O10, was obtained from molybdate-carbonate mixtures in Pt crucibles by using a high-temperature flux-growth method. The structural characterization of CoEu2Si3O10 was done by evaluation of single-crystal X-ray diffraction data collected at three different temperatures (105, 293, and 370 K). The light violet crystals are monoclinic, space group P21/n with a = 6.5620(13), b = 6.7207(13), c = 16.986(3) Å, β = 90.06(3)°, V = 749.1(3) Å3, and R(F) = 2.49 %, at room temperature. The new crystal structure type features layers parallel to (001) containing Si3O10 groups and Co 2O10 dimers. The Si-Si-Si angle of the Si 3O10 unit is 115.7°. Raman spectroscopy and a study of the photoluminescence properties of the Eu3+ ions in CoEu 2Si3O10 were undertaken. A new structure type containing layers parallel to (001) built up from Si3O10 groups and Co2O10 dimers was determined to be the trisilicate CoEu2Si3O10. Light violet monoclinic crystals were obtained by using a high-temperature flux-growth method.

Original languageEnglish
Pages (from-to)3405-3411
Number of pages7
JournalEuropean Journal of Inorganic Chemistry
Issue number19
DOIs
Publication statusPublished - Jul 2013
Externally publishedYes

Keywords

  • Flux synthesis
  • High-temperature chemistry
  • Raman spectroscopy
  • Silicates
  • Structure elucidation

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