Platinum complexes of the tripod-like ligand tris(2-diphenylphosphinoethyl)amine (tdpea). X-Ray crystal strcture of [Pt(tdpea)(CH2Cl)]BPh4

Abstract

Treatment of [Pt(C₂H₄)(PPh₃)₂] with the tripod-like ligand tris(2-diphenylphosphinoethyl)amine, N(CH₂CH₂PPh₂)₃(tdpea), affords the tetrahedral derivative [Pt(tdpea)(PPh₃)]. This species undergoes oxidative-addition reactions allowing the preparation of alkyl, hydrido, chloromethyl, and iodo five-co-ordinated species. An X-ray structure determination for the chloromethyl derivative has been carried out. Crystal data: monoclinic, space group P2₁/n, a= 34.601 (9), b= 17.136(5), c= 10.718(3)Å, β= 94.56(8)°, and Z= 4. The structure has been solved by three-dimensional Patterson and Fourier syntheses and refined by least squares to a conventional R value of 0.069.