Synthesis, crystal structure and photophysical properties of a neodymium trifluoroacetate complex wi

来源 :Journal of Rare Earths | 被引量 : 0次 | 上传用户:liongliong466
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The neodymium trifluoroacetate complexes were synthesized and characterized by single-crystal X-ray diffraction for [Nd(CF3COO)3·Bpy·(H2O)3]Bpy(1),elemental and TG analysis,FT-IR spectra,and PL spectra for Nd(CF3COO)3·Bpy(2)(Bpy:2,2’-bipyri-dine).The most interesting feature of the crystal structure for 1 is that it comprises a coordinated 2,2’-bipyridine molecule and an out-sphere 2,2’-bipyridine molecule.At the same time,the C-O distances appeared average which indicates the three atoms of carboxylato forming elec-tron-conjugate system.Hydrogen bond and π-π-stacking link the binuclear to two-dimensional sheet.The optical spectra for 2 exhibited that the complex possessed typical Nd(III) ion absorption and photoluminescence emission.The emission cross-section of 4F3/2→4I11/2 fluores-cence transition(3.63×10-20 cm2) was comparable with some laser glasses,which indicated good radiative properties of this neodymium trifluoroacetate complex in liquid matrix.The thermal analysis indicated that it was quite stable to heat. The neodymium trifluoroacetate complexes were synthesized and characterized by single-crystal X-ray diffraction for [Nd (CF3COO) 3 · Bpy · (H2O) 3] Bpy (1) Nd (CF3COO) 3 · Bpy (2) (Bpy: 2,2’-bipyri-dine) .The most interesting feature of the crystal structure for 1 is that it comprises a coordinated 2,2’-bipyridine molecule and an out- sphere 2,2’-bipyridine molecule. At the same time, the CO rate average average indicates that the three atoms of carboxylato forming elec-tron-conjugate system. Hydrogen bond and π-π-stacking link the binuclear to two-dimensional sheet The optical spectra for 2 exhibited that the complex possessed typical Nd (III) ion absorption and photoluminescence emission. The emission cross-section of 4F3 / 2 → 4I11 / 2 fluorescene transition (3.63 × 10-20 cm2) was comparable with some laser glasses, which shows good radiative properties of this neodymium trifluoroacetate complex in liquid matrix. The thermal analysis in dicated that it was quite stable to heat.
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