Where to buy TETRAKIS(TRIPHENYLPHOSPHINE)PLATINUM?

TETRAKIS(TRIPHENYLPHOSPHINE)PLATINUM is the chemical compound with the formula Pt(P(C6H5)3)4, often abbreviated Pt(PPh3)4. The bright yellow compound is widely used as a precursor to other platinum complexes.
The molecule is tetrahedral, with point group symmetry of Td, as expected for a four-coordinate metal complex of a metal with the d10 configuration. Even though this complex follows the 18 electron rule, it dissociates triphenylphosphine in solution to give the 16e− derivative containing only three PPh3 ligands: Pt(PPh3)4 → Pt(PPh3)3 + PPh3
The complex is typically prepared in one-pot reaction from potassium tetrachloroplatinate(II). Reduction of TETRAKIS(TRIPHENYLPHOSPHINE)PLATINUM with alkaline ethanol in the presence of excess triphenylphosphine affords the product as a precipitate. The reaction occurs in two distinct steps. In the first step, PtCl2(PPh3)2 is generated. In the second step, this platinum(II) complex is reduced. The overall synthesis can be summarized as:
K2[PtCl4] + 2KOH + 4PPh3 + C2H5OH → Pt(PPh3)4 + 4KCl + CH3CHO + 2H2O
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