Uses
Most reactions of PtCl2 proceed via treatment with ligands (L) to give molecular derivatives. These transformations entail depolymerization via cleavage of Pt-Cl-Pt linkages:
- PtCl2 + 2 L → PtCl2L2
Sometimes, such reactions can be deceptive. Addition of ammonia gives initially "PtCl2(NH3)2", but this material is in fact Magnus's green salt, .
Of the many such complexes that have been described, the following are illustrative:
- pink K2PtCl4, a widely employed water-soluble derivative.
- colorless cis-PtCl2(NH3)2, better known as cisplatin.
- colorless cis-PtCl2(P(C6H5)3)2, a commonly employed, easily crystallized species that is widely employed as a precursor other complexes of the type PtX(Cl)(P(C6H5)3)2 (X = H, CH3, etc.).
- yellow trans-PtCl2(P(C6H5)3)2, a metastable relative of the cis- isomer.
- colorless dichloro(cycloocta-1,5-diene)platinum(II) (Pt(cod)Cl2), an "organic-soluble" compound containing a labile organic ligand.
Several of these compounds are of interest in homogeneous catalysis in the service of organic synthesis or as anti-cancer drugs.
Read more about this topic: Platinum(II) Chloride