Hydrothermal synthesis and characterization of an unusual polyoxovanadium borate cluster: Structure of Rb4[(VO)6{ {B10O16(OH)6} }2] · 0.5H2O

Christopher J. Warren, Job T. Rijssenbeek, David J. Rose, Robert C. Haushalter, Jon A Zubieta

Research output: Contribution to journalArticle

29 Scopus citations


The hydrothermal reaction of RbVO3, (NH4)2B4O7 · 4H2O, ethylenediamine (en), and H2O in a mole ratio of 1:8:2:135 heated at 170°C for 5 days produces pale green crystals of the novel polyoxovanadium borate cluster compound Rb4[(VO)6{B10O16(OH) 6}2] · 0.5H2O (1) which contains [V6B20O38(OH)12]4- clusters, each cluster comprising a nearly hexagonal ring of six trans-edge-sharing VO5 square pyramids capped on each side by a B10O16(OH)6 8- triangle. The [V6B20O38(OH)12]4- clusters are separated in the solid state by Rb+ cations. Magnetic susceptibility and valence sum calculations indicate that all six of the vanadium atoms in the cluster are in the 4+ oxidation state.

Original languageEnglish (US)
Pages (from-to)2599-2605
Number of pages7
Issue number16
StatePublished - Jun 30 1998
Externally publishedYes



  • Hydrothermal synthesis
  • Polyoxometalates
  • Polyoxovanadium borates
  • X-ray structures

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

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