Jump to content

Molybdic acid

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by 98.221.179.18 (talk) at 13:51, 9 April 2011 (fix vandalized article). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Molybdic acid
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.029.063 Edit this at Wikidata
EC Number
  • 231-970-5
  • InChI=1/Mo.2H2O.2O/h;2*1H2;;/q+2;;;;/p-2/rH2MoO4/c2-1(3,4)5/h2-3H
    Key: VLAPMBHFAWRUQP-LHLUJLTBAG
  • O=[Mo](=O)(O)O
Properties
MoO3·H2O
Molar mass 161.95 g mol-1 [1]
Density 3.1 g cm-3 [1]
1510 mg dm-3 [2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Molybdic acid refrs to solid, hydrated forms of molybdenum trioxide and species in aqueous solution.

The simplest solid form, the monohydrate, is MoO3.H2O, though the dihydrate (MoO3.2H2O) is also known. The solid state structure of MoO3.H2O consists of layers of octahedrally coordinated MoO5.(H2O) units where 4 vertices are shared.[3]. The dihydrate has the same layer structure with the extra H2O molecule intercalated between the layers.

In aqueous solutions of acidifid molybdate salts low concentration molecular O3Mo.3H2O has been characterised spectroscopically.[4]

The salts of molybdic acid are called molybdates.

References

  1. ^ a b c http://www.chemicalbook.com/ChemicalProductProperty_EN_CB8854324.htm
  2. ^ http://www.chemspider.com/RecordView.aspx?rid=e75000d7-a392-4602-8ca4-f2bd1f94b31c
  3. ^ Wells A.F. (1984) Structural Inorganic Chemistry 5th edition Oxford Science Publications ISBN 0-19-855370-6
  4. ^ Solution structure of molybdic acid from Raman spectroscopy and DFT analysis, Oyerindea O.F., Week C.L., Anbarb A.D., Spiro T.G. Inorganica Chimica Acta, 361, 4, (2008), 1000-1007, doi:10.1016/j.ica.2007.06.025