Sodium tetrachloropalladate
Chemical compound
From Wikipedia, the free encyclopedia
Sodium tetrachloropalladate is an inorganic compound with the chemical formula Na2PdCl4. The compound crystallizes from water as a reddish-brown trihydrate (Na2PdCl4·3H2O), which is the commercially available form.[2] According to X-ray crystallography, the PdCl42- centers adopt square planar molecular geometry with Pd-Cl distances of 231 picometers.[1]
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| Names | |
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| IUPAC name
disodium tetrachloropalladium(2+) | |
| Other names
disodium tetrachloropalladate(II) | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.034.079 |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| Cl4Na2Pd | |
| Molar mass | 294.20 g·mol−1 |
| Density | 2.84 g/cm3[1] |
| Hazards | |
| GHS labelling: | |
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| Danger | |
| H290, H301, H302, H317, H318, H319, H410 | |
| P234, P261, P264, P270, P272, P273, P280, P301+P310, P301+P312, P302+P352, P305+P351+P338, P310, P321, P330, P333+P313, P337+P313, P363, P390, P391, P404, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Preparation
This salt, and the analogous alkali metal salts of the form M2PdCl4, may be prepared simply by reacting palladium(II) chloride with the appropriate alkali metal chloride in aqueous solution.[3] Palladium(II) chloride is insoluble in water, whereas the product dissolves:
- PdCl2 + 2 MCl → M2PdCl4
Related compounds
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 or benzonitrile complexes,[4] followed by reaction with phosphines.[3]