BaO−B2O3 system and its mysterious member Ba3B2O6

Tatyana B. Bekker, Sergey V. Rashchenko, Yurii V. Seryotkin, Alexander E. Kokh, Aleksey V. Davydov, Pavel P. Fedorov

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

The first systematic study of the BaO–B2O3 system and barium orthoborate Ba3B2O6 (3BaO·B2O3) was reported in 1949. Thereafter, the system was repeatedly refined but the structure of Ba3B2O6 compound has not been adequately studied yet. In our study we have, for the first time, obtained the crystalline samples of Ba3B2O6. The solved structure (Pbam, a = 13.5923(4) Å, b = 13.6702(4) Å, c = 14.8894(3) Å) belongs to the class of ‘anti-zeolite’ borates with a pseudotetragonal [Ba12(BO3)6]6+ cation pattern which contains channels along the c axis filled with anionic clusters. The Ba3B2O6 compound may be regarded as a fluorine-free end-member of the Ba3(BO3)2– xF3x solid solution. The BaO–B2O3 phase diagram presented in our study is based on our research and literature data.

Original languageEnglish
Pages (from-to)450-457
Number of pages8
JournalJournal of the American Ceramic Society
Volume101
Issue number1
DOIs
Publication statusPublished - 1 Jan 2018

Keywords

  • Borates
  • boron oxide
  • crystals/crystallization
  • phase diagrams
  • structure
  • LIQUID IMMISCIBILITY
  • crystals
  • BARIUM TETRABORATE
  • FORM
  • CRYSTAL-STRUCTURE
  • BORATE
  • LUMINESCENCE
  • GROWTH
  • crystallization
  • BETA-BAB2O4

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