Thorium oxalate is the
inorganic compound
An inorganic compound is typically a chemical compound that lacks carbon–hydrogen bondsthat is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as ''inorganic chemistry''.
Inorgan ...
with the formula Th(C
2O
4)
2(H
2O)
4. It is a white insoluble solid prepared by the reaction of thorium(IV) salts with
oxalic acid
Oxalic acid is an organic acid with the systematic name ethanedioic acid and chemical formula , also written as or or . It is the simplest dicarboxylic acid. It is a white crystalline solid that forms a colorless solution in water. Its name i ...
. The material is a
coordination polymer
Coordination may refer to:
* Coordination (linguistics), a compound grammatical construction
* Coordination complex, consisting of a central atom or ion and a surrounding array of bound molecules or ions
** A chemical reaction to form a coordinat ...
. Each Th(IV) center is bound to 10 oxygen centers: eight provided by the bridging oxalates and two by a pair of
aquo ligand
In chemistry, metal aquo complexes are coordination compounds containing metal ions with only water as a ligand. These complexes are the predominant Chemical species, species in aqueous solutions of many metal Salt (chemistry), salts, such as meta ...
s. Two additional
waters of hydration are observed in the lattice.
The solubility product (K
sp) of thorium oxalate is 5.0110
−25.
[Taishi Kobayashi, Takayuki Sasaki, Ikuji Takagi, Hirotake Moriyama (2009]
''Solubility of Thorium(IV) in the Presence of Oxalic and Malonic Acids''
Journal of Nuclear Science and Technology, Vol. 46, No. 11, p. 1085–1090 The density of anhydrous thorium oxalate is 4.637 g/cm
3.
References
External links
International Bio-Analytical Industries: Thorium Oxalate Dihydrate
Thorium(IV) compounds
Oxalates
{{inorganic-compound-stub