Structure and redox properties of a novel decavanadium cluster [(V=O)102-O)93-O)3(C5 H7O2)6] in dichloromethane

K. Oyaizu, E. L. Dewi, E. Tsuchida

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A novel decavanadium cluster [(V=O)102-O)93-O)3(C5H7 O2)6] bearing ten oxovanadium(V) centers linked with bridging oxygen atoms was prepared. In contrast to the well known decavanadate ion V10O28/6-, the molecule was soluble in organic solvents such as dichloromethane and 1,1,2,2-tetrachloroethane due to the peripheral acetylacetone ligands. X-ray crystallographic analysis revealed a molecular framework formed by nine square-pyramidal VO5 polyhedra surrounding one VO4 tetrahedron linked through the corners. The molecule consists of approximate three-fold rotational symmetry, allowing the classification of ten vanadium atoms into four chemically equivalent categories. The unique metal core geometry persists in solution, which was demonstrated by the four peaks in the 51V-NMR spectrum. However, the four types of vanadium atom could not be distinguished by electrochemical measurements; consequently, the molecule was a multielectron reservoir which showed a broad cathodic wave near 0.6 V vs. Ag

Original languageEnglish
Pages (from-to)136-141
Number of pages6
JournalJournal of Electroanalytical Chemistry
Volume498
Issue number1-2
DOIs
Publication statusPublished - 2001 Feb 16

Keywords

  • Crystal structure
  • Electron transfer
  • Vanadium cluster

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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