Crystal and molecular structure of cis-fluoro-(1,1,1,3,3,3-hexafluoroisopropyl)bis(triphenylphosphine)platinum, PtF[CH(CF3)2](PPh3)2: a square planar metal fluoro-complex

Abstract

Crystals of the title compound are monoclinic, space group P2₁/a, with Z= 4 in a unit cell of dimensions: a= 18·690(5), b= 18·662(18), c= 9·897(15)Å, β= 94·7(1)°. The structure was solved by conventional heavy-atom methods and refined by least squares to R 0·063 for 1937 independent reflections measured on a diffractometer. The platinum atom is in a square planar configuration. Two adjacent sites are occupied by triphenylphosphine groups, the other two by fluorine and a hexafluoroisopropyl group. The two Pt–P distances are significantly different; that trans to fluorine is 2·218(7), while that trans to –CH(CF₃)₂ is 2·310(7)Å. The geometry of the ligands is as expected.