ORGANOMETALLIC FRAMEWORKS IN SUPRAMOLECULAR POLYMERS

Organometallic frameworks are useful modules in supramolecular systems creation [1]. In this respect, they can impart particular structural and electronic properties, simply by varying the ligands on the metal centre. In particular, using bifunctional ligands, it is possible to achieve infinite chains or designed supramolecular systems through the occurrence of non-covalent interactions such as hydrogen bond, halogen bond, electrostatic interaction, π-π interaction, etc. Here we report the preparation of some adducts we recently obtained on co-crystallization of trans-[PtL2(C≡C-4-py)2] (L = PCy3, PEt3) with 1,2-diiodoperfluoroethane, 1,4-diiodoperfluorobenzene and 4,4’-diiodo-2,2’,3,3’-octafluoro-trans-stilbene [2]. The halogen bond between the modules is confirmed by the X-ray structures, showing that both the organoplatinum derivative and the diiodofluorocarbons behave as bidentate and telechelic modules.