Studies on Organolanthanide Complexes IV. Synthesis of 1,10-Phenanthroline Coordinated Dicyclopentadienyl Early Lanthanide Chloride and Trifluroacetate

Six new 1,10-phenanthroline coordinated dicyclopentadienyl early lanthanide trifluroacetate complexes, (C 5 H 5 ) 2 LnOC(O)CF 3 · n Phen (Ln = Nd, Pr, n = 1 or 2; Ln = Ce, La, n = 2; Phen = 1,10-phenanthroline) were synthesized by the reaction of CF 3 COONa in THF with (C 5 H 5 ) 2 LnC1·n Phen which was in turn prepared from LnC1 3 ·n Phen and C 5 H 5 Na. The structures of these new early organolanthanide complexes were verified by elemental analysis, IR, NMR and mass spectroscopy. The stabilization by coordinated 1,10-phenanthroline and its effect on the spectra were also discussed.