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Related Experiment Videos

(Et4N)4[V4O12].2H2O.

Hiroyuki Nakano1, Tomoji Ozeki, Atsushi Yagasaki

  • 1Department of Chemistry, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan.

Acta Crystallographica. Section C, Crystal Structure Communications
|September 3, 2002
PubMed
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Researchers synthesized a novel vanadium-oxygen compound, tetrakis(tetraethylammonium) cyclo-tetra-micro-oxo-tetrakis[dioxovanadium(V)] dihydrate. This inorganic compound features a unique ring structure of vanadium and oxygen atoms.

Area of Science:

  • Inorganic Chemistry
  • Materials Science
  • Crystallography

Background:

  • Vanadium oxides are known for diverse chemical and physical properties.
  • The synthesis of novel polyoxovanadates is crucial for developing new materials.
  • Understanding the structural motifs of vanadium-oxygen clusters informs chemical bonding theories.

Purpose of the Study:

  • To synthesize and characterize a novel cyclo-tetra-micro-oxo-tetrakis[dioxovanadium(V)] compound.
  • To elucidate the molecular structure and bonding of the synthesized vanadium-oxygen anion.
  • To investigate the role of tetraethylammonium cations and water molecules in the crystal structure.

Main Methods:

  • Reaction of vanadium pentoxide (V(2)O(5)) with tetraethylammonium hydroxide ((C(2)H(5))(4)NOH).

Related Experiment Videos

  • Single-crystal X-ray diffraction for structural determination.
  • Infrared spectroscopy for vibrational analysis (implied).

    • Main Results:

    • Successful synthesis of tetrakis(tetraethylammonium) cyclo-tetra-micro-oxo-tetrakis[dioxovanadium(V)] dihydrate.
    • Determination of a discrete, centrosymmetric [V(4)O(12)](4-) molecular anion.
    • Identification of a ring structure formed by four vertex-sharing tetrahedral VO(4) units.
    • Observation of water molecules hydrogen-bonded to the anion.

    Conclusions:

    • The study reports a novel vanadium-oxygen cluster with a unique cyclic structure.
    • The tetraethylammonium cation acts as a counterion, stabilizing the [V(4)O(12)](4-) anion.
    • The crystal structure is further stabilized by hydrogen bonding involving water molecules.