Trifluorophosphine arenes

Trifluorophosphine is a very convenient ligand in metal atom chemistry to use along with other ligands, e.g., in the stabilization of metal arene complexes (Section III,B). Reaction of a mixture of PF3 and PH3 with nickel vapor yields Ni(PF3)3PH3 and Ni(PF3)2(PH3)2 but no Ni(PH3)4. Attempts to make Ni(PH3)4 lead to hydrogen evolution from the ligand during or after condensation with the nickel vapor (128). 

R. Middleton, J. R. Hull, S. R. Simpson, C. H. Tomlinson, and P. L. Timms, Formation of Complexes with Arenes, Trifluorophosphine, and Nitric Oxide, J. Chem. Soc., Dalton Trans. 1973, 120-124. 

The first reported arene-transition metal trifluorophosphine complex [Cr(i/6-C6H6)(PF3)3] was obtained by UV irradiation of [Cr(i/6-C6H6)(C0)3] with PF3 (method A), whereas the corresponding thermal reaction afforded instead the mixed carbonyl trifluorophos-... 

A rather unusual synthetic route to an 6-arene-metal-trifluorophosphine complex has been described in which displacement... 

---