11. "Oxidative Addition of Dimesitylphosphine to Platinum(0): P-H vs P-C Activation," Igor V. Kourkine, Matthew D. Sargent, and David S. Glueck, Organometallics 1998, 17, 125-127.

Treatment of Pt(dppe)(trans-stilbene) (1, dppe = Ph₂PCH₂CH₂PPh₂) with dimesitylphosphine at room temperature leads initially to generation of the phosphido hydride complex Pt(dppe)(PMes₂)(H) (2, Mes = 2,4,6-Me₃C₆H₂) in an apparent equilibrium mixture with 1, PHMes₂, and trans-stilbene. Over time, both 1 and 2 are converted to the phosphido aryl Pt(dppe)(PHMes)(Mes) (3, prepared independently); some decomposition to PHMes₂, Pt(dppe)₂ (4) and Pt metal also occurs. Labeling and mechanistic studies suggest that the unobserved intermediate Pt(dppe)(PHMes₂) (6), formed reversibly from 1 and PHMes₂, undergoes either reversible P-H activation or irreversible P-C activation or disproportionation.