Site-specific vanadates CO4Fe3.33(VO4)6 and Mn3Fe4(VO4)6

Xiandong Wang, Douglas A. Vander Griend, Charlotte L. Stern, Kenneth R Poeppelmeier

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Single crystals of Co4Fe3.33(VO4)6 and Mn3Fe4(VO4)6 were grown from equivalent CoO/Fe2O3/V2O5 and MnO/Fe2O3/V2O5 melts, respectively. The former crystallizes in the orthorhombic space group Pnma with parameters a = 4.965(1) Å, b = 10.211(1) Å, c = 17.188(3) Å, and Z = 2 and is a homeotype of such catalysts as Mg2.5VMoO8. The latter crystallizes in the triclinic space group P1̄ with parameters a = 6.703(2) Å, b = 8.137(1) Å, c = 9.801(2) Å, α = 105.56(1)°, β = 105.58(2)°, γ = 102.35(1)°, and Z = 1 and is a homeotype of β-Cu3Fe4(VO4)6, the low-pressure form of α-Cu3Fe4(VO4)6. The cobalt analogue deviates in stoichiometry from the reactant melt to form the more dense α-Cu3Fe4(VO4)6 structure type comprised of partially occupied face-sharing octahedral and trigonal prismatic coordination sites.

Original languageEnglish
Pages (from-to)136-140
Number of pages5
JournalInorganic Chemistry
Volume39
Issue number1
DOIs
Publication statusPublished - Jan 10 2000

ASJC Scopus subject areas

  • Inorganic Chemistry

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