Tris(triphenylphosphine)platinum(0) is the coordination compound with the formula Pt(P(C6H5)3)3, often abbreviated Pt(PPh3)3. The golden-orange compound is used as a precursor to other platinum complexes.
Structure The PtP3 core of the molecule is planar. According to X-ray crystallography, the Pt–P distances are 226 picometers, which are 10 pm shorter than ing the more crowded tetrakis(triphenylphosphine)platinum(0) note: the structure is in the Supporting Information. The Pt–P bond distances are listed as Pd–P, a typographical error.
Synthesis and reactions The complex is typically prepared by recrystallizing tetrakis(triphenylphosphine)platinum from hot ethanol. This 16-electron complex binds triphenylphosphine to give the 18-electron derivative tetrakis(triphenylphosphine)platinum(0), which is tetrahedral:
The complex reacts very similarly to tetrakis(triphenylphosphine)platinum to give platinum(II) derivatives:
Bronsted acids give the corresponding hydride complexes:
The reaction with oxygen affords a dioxygen complex:
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