Sodium tetrachloropalladate 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 ...
with the
chemical formula
A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as pare ...
Na
2PdCl
4. This salt, and the analogous
alkali metal
The alkali metals consist of the chemical elements lithium (Li), sodium (Na), potassium (K),The symbols Na and K for sodium and potassium are derived from their Latin names, ''natrium'' and ''kalium''; these are still the origins of the names ...
salts of the form M
2PdCl
4, may be prepared simply by reacting
palladium(II) chloride with the appropriate alkali metal chloride in aqueous solution.
Palladium(II) chloride is insoluble in water, whereas the product dissolves:
: PdCl
2 + 2 MCl → M
2PdCl
4
The compound crystallizes from water as trihydrate (Na
2PdCl
4·3H
2O, reddish-brown powder with molar mass 348.22), which is the commercially available form.
This compound may further react with phosphines to give phosphine complexes of palladium.
An alternative method of preparing such phosphine complexes is to break up the
coordination polymer of palladium(II) chloride into reactive, monomeric
acetonitrile
Acetonitrile, often abbreviated MeCN (methyl cyanide), is the chemical compound with the formula and structure . This colourless liquid is the simplest organic nitrile (hydrogen cyanide is a simpler nitrile, but the cyanide anion is not class ...
or
benzonitrile
Benzonitrile is the chemical compound with the formula , abbreviated PhCN. This aromatic organic compound is a colorless liquid with a cherry or almond like odour. It is mainly used industrially to produce the melamine resin precursor benzoguanam ...
complexes,
followed by reaction with
phosphine
Phosphine (IUPAC name: phosphane) is a colorless, flammable, highly toxic compound with the chemical formula , classed as a pnictogen hydride. Pure phosphine is odorless, but technical grade samples have a highly unpleasant odor like rotting ...
s.
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References
{{Palladium compounds
Chloro complexes
Chlorometallates
Palladium compounds
Sodium compounds