THE INFLUENCE OF THE LIGANDS ON THE CATALYTIC ACTIVITY OF A SERIES OF RH1 COMPLEXES IN REACTIONS WITH PHENYLACETYLENE - SYNTHESIS OF STEREOREGULAR POLY(PHENYL) ACETYLENE

The catalytic activity of a series of [Rh L-L chel]X complexes, in which the authors varied the unsaturated ligand, the nitrogen chelating ligand, and the counter ion, has been examined in reactions with phenylacetylene (PA). The catalytic behavior of the [Rh(cod)Cl2],tmeda] (tmeda = N,N,N′, N′tetramethylethylendiamine), as cocatalyst in different reaction conditions was also examined. The influence of the ligands on the catalytic activity of these RhI complexes is discussed. 1H and 13C NMR spectra have shown that highly stereoregular polyphenylacetylene can be obtained. Conditions for homogeneous doping of PPA, to obtain materials whose conductivity varies over 10-11 orders of magnitude, are proposed. The stability of the doped polymers is also discussed.