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A novel supramolecular organic-inorganic adduct containing alpha-Keggin-type [P...
Paz, FAA; Sousa, FL; Soares-Santos, PCR; Cavaleiro, AMV; Nogueira, HIS; Klinowski, J; Trindade, TThe structure of the title compound, tris(hydroxonium) 12- phosphato-tetracosa- 2-oxo-dodecaoxododecatungsten hexakis( benzo-15-crown-5)±methanol±water (1/1/1), (H3O)3- [PW12O40] 6C14H20O5 CH3OH H2O (where C14H20O5 is benzo-15-crown-5), has been determined at 180 K. [PW12O40]3ÿ anions are typical of -Keggin structures, and the [H3O (C14H20O5)2]+ sandwich-type moieties contain a large number of short O O c...
Lanthanide compounds containing a benzo-15-crown-5 derivatised [60]fullerene an...
Soares-Santos, PCR; Trindade, T; Tome, AC; Rocha, J; Ferreira, RAS; Carlos, LD; Paz, FAA; Klinowski, J; Nogueira, HISNovel lanthanum(III), europium(III) and terbium(III) compounds of a benzo-15-crown-5 [60]fulleropyrrolidine were isolated in the solid state and characterised using vibrational (infrared and Raman) spectroscopy and by 13C CP MAS NMR for the lanthanum(III) compound. The photoluminescence properties were investigated for the europium(III) and terbium(III) compounds. The related [Tb(H2O)3(NO3)2(acac)] C14H20O5 [...
Novel lanthanide luminescent materials based on complexes of 3-hydroxypicolinic...
Soares-Santos, PCR; Nogueira, HIS; Felix, V; Drew, MGB; Ferreira, RAS; Carlos, LD; Trindade, TNew lanthanide complexes of 3-hydroxypicolinic acid (HpicOH) were prepared: [Ln(H2O)- (picOH)2(í-HpicO)]â3H2O (Ln ) Eu, Tb, Er). The complexes were characterized using photoluminescence, infrared, Raman, and 1H NMR spectroscopy, and elemental analysis. The crystal structure of [Eu(H2O)(picOH)2(í-HpicO)]â3H2O 1 was determined by X-ray diffraction. Compound 1 crystallizes in a monoclinic system with space group P...
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