13477-89-9Relevant articles and documents
Hydrothermal synthesis and crystal structures of three novel lanthanide coordination polymers with glutarate and 1,10-phenanthroline
Zhang, Li-Ping,Wan, Yong-Hong,Jin, Lin-Pei
, p. 169 - 178 (2003)
The first series of lanthanide coordination polymers with glutarate (glu) and 1,10-phenanthroline (phen), [Nd2(glu)3(phen)2]n 1,[Tb(glu)(phen)Cl]n 2 and [Ho(glu)(phen)Cl]n 3, have been prep
Hydrothermal synthesis and structural characterization of two novel lanthanide supramolecular coordination polymers with nano-chains
Wan, Yong-Hong,Jin, Lin-Pei,Wang, Ke-Zhi
, p. 85 - 93 (2003)
Two novel lanthanide supramolecular coordination polymers, {[Nd2(phth)3(phen)(H2O)].H2O}n (1, phth = phthalate, phen = 1,10-phenanthroline) and {[Ho2(phth)3(phen)(H2O) 2].3H2O}n (2), have been synthesized by hydrothermal method and characterized by X-ray diffraction. The results show that complex 1 crystallizes in triclinic space group P1? with a = 7.605(2) ?, b = 12.972(4) ?, c = 18.773(6) ?, α = 109.778(5)°, β = 91.657(5)°, γ = 103.951(5)° and Z = 2. Complex 1 has a one-dimentional nano-chain structure and the existence of hydrogen bonds and π-π interactions results in 2D network structure. Complex 2 crystallizes in triclinic space group P1? with a = 11.695(2) ?, b = 13.488(3) ?, c = 13.761(3) ?, α = 87.09(3)°, β = 67.40(3)°, γ = 67.41(3)° and Z = 2. Complex 2 features a zigzag double-chain and the hydrogen bonds lead to the formation of a three-dimensional network. Both Complex 1 and 2 have two metal environments.
Effect of methanol on the dissolution of neodymium oxide in hydrochloric acid solutions
Girgin,Y?rüko?lu
, p. 646 - 654 (2010)
The effect of methanol on the solubility of Nd2O3 in HCl medium in the temperature range of 25-55°C were studied. HCl-CH 3OH was observed to be a better solvent than HCl-CH 3OH-H2O and hydrochloric acid for the dissolution of Nd2O3 mainly due to prevention of neodymium hydroxide and dissolution increased with increase of HCl concentration even at high HCl concentrations. Presence of methanol in the medium was determined to cause corresponding decreases in conductivity, ESCE, pH values with corresponding increase in ER values. Neodymium compounds formed in HCl-CH3OH medium at 25°C were isolated and identified using X-ray diffraction, thermal and chemical analysis methods and their thermal behaviour were investigated between 25-1100°C. NdCl3 × x 1CH3OH and NdCl3 × x 2CH 3OH × 4.14H2O (x 1 + x 2 = 2.8) were formed in non-aqueous medium and these compounds were converted into NdCl3, NdCl2.37 and NdCl3 × 0.47CH 3OH with complete and partial loss of water and methanol around 240°C respectively. Methanol was completely removed around 390°C with formation of NdCl2.37 (77.5%) and NdOCl (22.5%) and NdOCl was detected as the major stable phase above 700°C.
Hydrothermal synthesis and luminescence behavior of rare-earth-doped NaLa(WO4)2 powders
Wang, Feng,Fan, Xianping,Pi, Daibo,Wang, Zhiyu,Wang, Minquan
, p. 825 - 830 (2005)
NaLa(WO4)2 powders doped with Eu3+, Nd3+, and Er3+ have been synthesized by a mild hydrothermal method and a crystal of exclusive scheelite phase could be obtained at low temperature. From the spectrum of Eu3+ it has been concluded that the dopant Eu3+ ion occupies a La3+ site and mainly takes the site with C2 symmetry. The higher quenching concentration can be observed in the Eu3+-doped NaLa(WO4)2 powders. The Er3+- and Nd3+-doped NaLa(WO4)2 powders exhibit luminescence in the near infrared (Er3+ at 1550 nm, and Nd3+ at 1060 nm). The transition mechanism of the up-conversion luminescence of the Er3+-doped NaLa(WO4)2 powders can be ascribed to two photons absorption process.
Two new 3D lanthanide coordination polymers with benzenesulfonic and adipic acids: Synthesis, structure And luminescent properties
Wang, Zhuo,Bai, Feng-Ying,Xing, Yong-Heng,Xie, Yan,Ge, Mao-Fa,Niu, Shu-Yun
, p. 1570 - 1575 (2010)
Two new lanthanide complexes [Sm2(ad)2.5(BSA)(H 2O)2]n, (1) and [Nd2(ad) 2.5(BSA)(H2O)2], (2) (H2ad = adipic acid, HBSA = benzenesulfonic acid) w
IR luminescence of neodymium(III) and ytterbium(III) ions in complexes with N-alkyl-substituted 2-aminobenzoic acids
Meshkova,Topilova,Devyatykh,Gusev,Shul'Gin
, p. 262 - 266 (2011/05/06)
The luminescence of neodymium(III) and ytterbium(III) ions in complexes with N-alkyl-substituted 2-aminobenzoic acids has been studied. The luminescence spectra of the Nd(III) complexes show two bands with maxima at 875 and 904 and 1060 nm, and the spectra of the Yb(III) complexes show one band at 980 nm. The introduction of an additional ligand or some surfactants into the Nd(III) and Yb(III) coordination sphere leads to an increase in the luminescence intensity. A correlation between the luminescence intensity of Nd(III) and Yb(III) 2(N-alkylamino)benzoates and the length of the hydrocarbon radical bound to the nitrogen atom has been studied.
Synthesis, structure, thermal and luminescent behaviors of lanthanide-Pyridine-3,5-dicarboxylate frameworks series
?yszczek, Renata
, p. 120 - 127 (2011/01/08)
The isostructural series of lanthanide pyridine-3,5-dicarboxylates of the formula [Ln2pdc3(dmf)2]·(dmf) x(H2O)y where Ln are lanthanides from La(III) to Lu(III); pdc2--C5/s
Near-infrared luminescence from visible-light-sensitized hybrid materials covalently linked with tris(8-hydroxyquinolinate)-lanthanide [Er(III), Nd(III), and Yb(III)] derivatives
Sun, Lining,Dang, Song,Yu, Jiangbo,Feng, Jing,Shi, Liyi,Zhang, Hongjie
, p. 16393 - 16397 (2011/05/14)
A series of new near-infrared (NIR) luminescent lanthanide-quinolinate derivatives [Ln(Q-Si)3] and xerogels (named as LnQSi-Gel, Ln = Er, Nd, Yb) covalently linked with the Ln(Q-Si)3 by using the 8-hydroxyquinoline-functionalized alkoxysilane (Q-Si) have been synthesized. The obtained xerogel materials LnQSi-Gel are rigid and show homogeneous by field-emission scanning electron microscopy (FE-SEM) images. The Fourier-transform infrared (FT-IR), fluorescence spectra of Ln(Q-Si) 3, and LnQSi-Gel were measured, and the corresponding luminescence decay analyses were recorded. Of importance here is that the excitation spectra of the Ln(Q-Si)3 and LnQSi-Gel extend to the region of visible light (more than 500 nm). Upon ligand-mediated excitation with the visible light, the Ln(Q-Si)3 and LnQSi-Gel show the characteristic NIR-luminescence of the corresponding lanthanide ions through the intramolecular energy transfer from the ligands to the lanthanide ions. The good luminescent performances enable these NIR-luminescent xerogel materials to have possible applications in medical diagnostics, laser systems, and optics, etc.
Syntheses and characterization of novel lanthanide adamantine-dicarboxylate coordination complexes
Li, Xing,Wei, Dan-Yi,Huang, Shi-Jie,Zheng, Yue-Qing
, p. 95 - 101 (2009/04/14)
Hydrothermal reactions of 1,10-phenanthroline (phen), 1,3-adamantanedicarboxylic acid (H2L) and lanthanide chlorides yielded six compounds: [Ln(L)(HL)(phen)] (Ln=Pr, 1; Nd, 2), [Ln(L)(HL)(phen)(H2O)] (Sm, 3; Eu, 4), [Tb(L)(HL)(phen)(
Thermochemical properties of the rare earth complexes with pyromellitic acid
Wang, Lijun,Liu, Fei,Yang, Xuwu,Wang, Xiaoyan,Liu, Ruiping,Zhao, Sa,Chen, Sanping
, p. 43 - 46 (2009/05/30)
Fourteen rare earth complexes with pyromellitic acid were synthesized and characterized by means of chemical and elemental analysis, and TG-DTG. The constant-volume combustion energies of complexes, ΔcU, were measured by a precise rotating-bomb
