Pseudo-capsular behaviour of two trans-coordinated calixarenyl phosphines
Résumé
The square-planar complex trans-[PtCl2L2] (L = 5-diphenylphosphinyl-25,26,27,28-tetrabenzyloxy-calix[4]arene) was prepared in two steps from [PtCl2(cod)] (cod = 1,5-cyclooctadiene) and the corresponding phosphine. In the solid state, the calixarene moieties adopt a typical pinched cone conformation; they are both turned towards the Cl-Pt-Cl rod, thereby forming a capsule that hosts the platinum centre.