Yttrium oxalate is an
inorganic compound
In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as '' inorganic chemist ...
, a salt of
yttrium and
oxalic acid
Oxalic acid is an organic acid with the systematic name ethanedioic acid and formula . It is the simplest dicarboxylic acid. It is a white crystalline solid that forms a colorless solution in water. Its name comes from the fact that early inve ...
with the chemical formula Y(CO).
The compound does not dissolve in water and forms crystalline hydrates—colorless crystals.
Synthesis
Precipitation of soluble yttrium salts with
oxalic acid
Oxalic acid is an organic acid with the systematic name ethanedioic acid and formula . It is the simplest dicarboxylic acid. It is a white crystalline solid that forms a colorless solution in water. Its name comes from the fact that early inve ...
:
::
Properties
Yttrium oxalate is highly insoluble in water and converts to the oxide when heated.
Yttrium oxalate forms crystalline hydrates (colorless crystals) with the formula Y(CO)•''n'' HO, where n = 4, 9, and 10.
Decomposes when heated:
::
The solubility product of yttrium oxalate at 25 °C is 5.1 × 10
−30.
The trihydrate Y(CO)•3HO is formed by heating more hydrated varieties at 110 °C.
Y(CO)•2HO, which is formed by heating the decahydrate at 210 °C) forms monoclinic crystals with unit cell dimensions a=9.3811 Å, b=11.638 Å, c=5.9726 Å, β=96.079°.
Related
Several yttrium oxalate
double salts are known containing additional cations. Also a mixed-anion compound with carbonate is known.
References
{{Oxalates
Inorganic compounds
Yttrium compounds
Oxalates