Samarium(III) oxalate is an
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 ...
, a salt of
samarium
Samarium is a chemical element; it has symbol Sm and atomic number 62. It is a moderately hard silvery metal that slowly oxidizes in air. Being a typical member of the lanthanide series, samarium usually has the oxidation state +3. Compounds of s ...
and
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 ...
with the formula Sm
2(C
2O
4)
3. The compound does not dissolve in water, forms a crystalline hydrate with yellow crystals.
Synthesis
Precipitation
In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls from clouds due to gravitational pull. The main forms of precipitation include drizzle, rain, rain and snow mixed ("sleet" in Commonwe ...
of soluble samarium salts with oxalic acid:
::
Also a reaction of samarium nitrate and oxalic acid in an aqueous solution:
::
Physical properties
Samarium(III) oxalate forms a crystalline hydrate of the composition Sm
2(C
2O
4)
3 • 10H
2O with yellow crystals.
Chemical properties
Decomposes on heating:
::
Crystalline hydrate Sm
2(C
2O
4)
3 • 10H
2O decomposes stepwise.
References
{{Oxalates
Oxalates
Samarium(III) compounds