Synthesis and characterization of polyfluorinated 2,2鈥?bipyridines and their palladium and platinum complexes, [MX2(bis(RfCH2OCH2)-2,2鈥?bpy)] (Xxa0;=xa0;Cl, Br)
摘要
The fluorous-ponytailed bpy ligands at 4,4鈥?and 5,5鈥?positions, 4,4鈥?bis(RfCH2OCH2)-2,2鈥?bpy and 5,5鈥?bis(RfCH2OCH2)-2,2鈥?bpy, were prepared. Then these two differently positioned bpy ligands with varying fluorous lengths were treated with [PdCl2(CH3CN)2], [PtCl2(CH3CN)2], or the simple PtBr2 salt to result in the corresponding 4,4鈥? or 5,5鈥?metal halide-containing complexes, [MX2(bis(RfCH2OCH2)-2,2鈥?bpy)] [MxA0;= Pd or Pt; X = Cl or Br]. All of these ligands and metal complexes were fully characterized by multi-nuclei NMR (1H, 19F, and 13C) and FTIR spectroscopy and mass spectrometry (GC/MS, EI and CI, or FAB). Additionally, single crystals of the Pd and Pt complexes with two bpy ligands were successfully obtained, and their X-ray structures are compared with their analogues.