Tungsten pentoxide () was reported in early literature but proved to have the
stoichiometry W
18O
49.
[Wells A.F. (1984) ''Structural Inorganic Chemistry'' 5th edition Oxford Science Publications ] Sometimes called mineral blue, it is a blue solid formed by the reaction of tungsten trioxide, WO
3, and
tungsten
Tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. Tungsten is a rare metal found naturally on Earth almost exclusively as compounds with other elements. It was identified as a new element in 1781 and first isol ...
metal at 700 °C.
Intermediate oxides of tungsten
There are a number of these unusual intermediate oxides formed from reacting metal and trioxide namely, W
20O
58, W
24O
70.
W
18O
49 contains both
octahedral
In geometry, an octahedron (plural: octahedra, octahedrons) is a polyhedron with eight faces. The term is most commonly used to refer to the regular octahedron, a Platonic solid composed of eight equilateral triangles, four of which meet a ...
and
pentagonal bipyramidal co-ordination of the metal
atom
Every atom is composed of a nucleus and one or more electrons bound to the nucleus. The nucleus is made of one or more protons and a number of neutrons. Only the most common variety of hydrogen has no neutrons.
Every solid, liquid, gas, ...
s by
oxygen
Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as ...
.
See also
*
Tungsten(III) oxide
*
Tungsten(IV) oxide
*
Tungsten(VI) oxide
Tungsten(VI) oxide, also known as tungsten trioxide is a chemical compound of oxygen and the transition metal tungsten, with formula WO3. The compound is also called tungstic anhydride, reflecting its relation to tungstic acid . It is a light ...
References
Tungsten compounds
Transition metal oxides
{{inorganic-compound-stub