At temperatures approaching 200 degrees C, Pt(PF3)(4) loses PF3 and yields a cluster, Pt-4(PF3)(8). This composition has been confirmed by Fourier transform ion cyclotron resonance mass spectrometry, but its structure is unknown. At higher temperature, the monomer yields platinum metal (confirmed by X-ray diffraction) and the expected quantity of PF3 gas. The PF3 Produced contains no observable impurities. Ligands such as olefins do not replace the PF3 in Pt(PF3)(4). However, ligands like P(OCH3)(3) cause extensive replacement of the PF3 ligand.