Antimonate
Encyclopedia
The antimonate ion
Ion
An ion is an atom or molecule in which the total number of electrons is not equal to the total number of protons, giving it a net positive or negative electrical charge. The name was given by physicist Michael Faraday for the substances that allow a current to pass between electrodes in a...

 is Sb(OH)6, where Sb is antimony
Antimony
Antimony is a toxic chemical element with the symbol Sb and an atomic number of 51. A lustrous grey metalloid, it is found in nature mainly as the sulfide mineral stibnite...

 and (OH) is the hydroxyl
Hydroxyl
A hydroxyl is a chemical group containing an oxygen atom covalently bonded with a hydrogen atom. In inorganic chemistry, the hydroxyl group is known as the hydroxide ion, and scientists and reference works generally use these different terms though they refer to the same chemical structure in...

 group. Antimonates contain antimony in its +5 oxidation state. They are moderately oxidizing.

An antimonate (compound) refers to a compound that contains the antimonate ion.

Antimonate ions occur in some minerals (see :category:Antimonate minerals).

In neutral conditions it forms antimony pentoxide
Antimony pentoxide
Antimony pentoxide is a chemical compound of antimony and oxygen. It always occurs in hydrated form, Sb2O5·nH2O. It contains antimony in the +5 oxidation state.-Structure:...

, Sb2O5; in alkaline conditions the antimonate ion exists, Sb(OH)6. It dissolves in acid to form the antimony salt.

Like its horizontal neighbor in the periodic table
Periodic table
The periodic table of the chemical elements is a tabular display of the 118 known chemical elements organized by selected properties of their atomic structures. Elements are presented by increasing atomic number, the number of protons in an atom's atomic nucleus...

, tellurium, and unlike other elements in the same group, antimony is commonly hexacoordinate
Hexacoordinate
Hexacoordinate in chemistry generally refers to a molecule with six ligands or atomic attachments arranged around a single metal atom in the centre...

, for example in the unit Sb(OH)6; tetracoordinate
Tetracoordinate
Tetracoordinate in coordination chemistry generally refers to four ligands or atomic attachments to a single metal centre. Tetracoordinate species can form tetrahedral, square planar or pyramidal geometries. This is usually dictated by lone electron pairs on the metal centre....

units are not common.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK