Magnetic and Luminescence Properties of 8-Coordinated Pyridyl Adducts of Samarium(III) Complexes Containing 4,4,4-Trifluoro-1-(naphthalen-2-yl)-1,3-butanedionate

A novel series of polypyridyl adducts, [Sm(ntfa)3(NN)] (2–4), with ntfa = 4,4,4-trifluoro-1-(naphthalen-2-yl)-1,3-butanedionate, NN 2,2′-bipyridine (bipy), 4,4′-dimethyl-2,2′-bipyridine (4,4′-Me2bipy), and 5,5′-dimethyl-2,2′-bipyridine (5,5′-Me2bipy) were synthesized from the precursor complex [Sm(ntfa)3(MeOH)2] (1) corresponding pyridyl ligands. Single X-ray crystallography showed that complexes displayed 8-coordinated geometry. The solid adducts 2–4 exhibited emission luminescence in NIR visible regions close quantum yields (QY 0.20–0.25%). magnetic data 1–4 larger values than those expected for magnetically noncoupled Sm(III) 6H5/2 ground state, no saturation on applied high field static at a temperature 2 K.