10361-91-8Relevant academic research and scientific papers
Synthesis and characterization of pentaphenyldiytterbium Ph2Yb(THF)(μ-Ph)3Yb(THF)3
Bochkarev, Mikhail N.,Khramenkov, Vladimir V.,Rad'kov, Yury F.,Zakharov, Lev N.,Struchkov, Yury T.
, p. 27 - 39 (1992)
The binuclear ytterbium complex Ph2Yb(THF)(μ-Ph)3Yb(THF)3 (1) was obtained in reactions of naphthaleneytterbium C10H8Yb(THF)2 with diphenylmercury or triphenylbismuth in THF.An X-ray crystallographic study (a = 11.099(2), b = 19.876(4), c = 19.723(4) Angstroem, β = 103.33(3) deg, Z = 2, space group P21) showed that the molecule of 1 has two Yb atoms coupled by three bridging Ph groups, which are linked with the first Yb atom by an η1 bond and with the second one by an unsymmetrical η2 bond.In addition the first Yb atom has an η1 bond with two terminal Ph groups and one coordinated THF molecule whereas the second Yb atom is linked with three THF molecules.The coordination of both Yb atoms is a distorted octahedron.In the crystal, there are two symmetrically independent molecules of 1 with a similar structure.The Yb-C (terminal Ph) bond length is 2.388-2.463 Angstroem.The η1- and η2-Yb-C (bridging Ph) bond distance varies in the ranges 2.475-2.584, 2.547-2.751 and 2.877-3.250 Angstroem.The magnetic moment μeff(per YbIII atom) is 4.0 +/- 0.05 μB.Reactions of 1 with water, HCl, Br2, MeI and CO2 give benzene, bromobenzene, toluene and PhCOOH, respectively.
Scintillators based on ytterbium chloride adducts with neutral organophosphorus extractants for detecting solar neutrino for LENS (Low-Energy Neutrino Spectroscopy) experiment
Danilov,Krylov,Korpusov,Kostikova,Barabanov,Bezrukov,Kornoukhov,Nesterova,Yanovich,Yakshin,Tsarenko,Cattadori,Ferrari,Falgiani
, p. 140 - 145 (2003)
The main features of extraction of ytterbium chloride with dibutyl butylphosphonate (DBBP) and triisoamylphosphine oxide (TIAPO) were studied. The effects of temperature, DBBP and TIAPO concentrations in 1,2,4-trimethylbenzene (TMB), and concentrations of
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)
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.
Preparation of organoytterbium reagent from ytterbium trichloride and organomagnesium
Matsubara, Seijiro,Ikeda, Takanori,Oshima, Koichiro,Utimoto, Kiitiro
, p. 1226 - 1227 (2001)
The preparation of organolanthanoid species from diorganomagnesium and lanthanoid salt is discussed. Treatment of cerium trichloride or ytterbium trichloride with diorganomagnesium gave the corresponding organolanthanoid species much more efficiently than treatment of the salt with organomagnesium halide.
Water-soluble Yb3+, Tm3+ codoped NaYF4 nanoparticles: Synthesis, characteristics and bioimaging
Chen, Huan,Zhai, Xuesong,Li, Duo,Wang, Lili,Zhao, Dan,Qin, Weiping
, p. 70 - 73 (2012)
Water soluble NaYF4 nanocrystals codoped with 20 mol% Yb 3+, 0.5 mol% Tm3+ were prepared by a facile solvothermal approach using polyvinylpyrrolidone (PVP) as a surfactant. The upconversion NaYF4 nanocrystals were pure cubic phase with an average size of ～40 nm. They could be well redispersed in water to form a clearly transparent solution without obvious precipitation. With the excitation of a 980-nm diode laser, the nanocrystal solution presents bright violet and blue upconversion luminescence. These upconversion nanoparticles (UCNPs) were incubated with HeLa cells at 37 °C for 24 h, and bright blue upconversion luminescence were observed from the UCNPs endocytosed into the HeLa cells on a microscope equipped with a 980-nm fiber laser. These results indicated that the UCNPs had potential applications for biological imaging as luminescent probes.
Redox reaction Yb(III) + e = Yb(II) in a molten eutectic mixture NaCl-2CsCl
Novoselova,Smolenskii
, p. 2133 - 2138 (2009)
Potentiometric method was used to measure the redox potentials of Yb 3+/Yb2+ in a eutectic melt of sodium and cesium chlorides relative to a chlorine reference electrode in the temperature range 823-973 K. The basic thermodynamic cha
Accessing decaphenylmetallocenes of ytterbium, calcium, and barium by desolvation of solvent-separated ion pairs: Overcoming adverse solubility properties
Deacon, Glen B.,Forsyth, Craig M.,Jaroschik, Florian,Junk, Peter C.,Kay, Danielle L.,Maschmeyer, Thomas,Masters, Anthony F.,Wang, Jun,Field, Leslie D.
, p. 4772 - 4778 (2008)
The redox-transmetalation ligand-exchange reaction of ytterbium or calcium metal with 2 equiv of pentaphenylcyclopentadiene (C5Ph5H) and 1 equiv of HgPh2 in thf afforded the solvent-separated ion pairs (SSIPs) [M(thf)
X-RAY POWDER DIFFRACTION STUDY OF THE YbCl2-Ybl2 SYSTEM.
Lasocha,Voos-Esquivel,Hodorowicz,Kim,Eick
, p. 67 - 73 (1988)
The YbCl//2-Ybl//2 system has been investigated over the entire composition range by examining at room temperature both slowly cooled and quenched fused samples of the reactants. The system may be described in terms of mole% Ybl//2, Y, as follows: for Y equals approximately 85 to 100, a YbI//2 (CdI//2-type) solid solution region prevails; for Y equals approximately 55 to approximately 85, 'YbCl//0//. //3I//1//. //7,' YbCl//2, and 6R- 'YbCl//0//. //5I//1//. //5' are found; for Y equals 10 to approximately 55, the YbCl//2 and 6R- 'YbCl//0//. //5I//1//. //5' phases coexist; and for Y equals 0 to 10, a YbCl//2 solid solution region is found. The unusual behavior of the system is discussed and compared with that of related systems.
Luminescent properties of ytterbium-doped ternary lanthanum chloride
Kaminska,Cybińska,Zhydachevskii,Sybilski,Meyer,Suchocki
, p. 7993 - 7997 (2011/08/03)
Studies of the absorption and temperature dependence of photoluminescence spectra and luminescence decay times of the intra-shell f-f transitions ( 2F5/2 ? 2F7/2) of Yb 3+ ions in K2LaClsu
Lanthanide carbonates
Janicki, Rafal,Starynowicz, Przemyslaw,Mondry, Anna
, p. 3601 - 3616 (2011/10/11)
The crystal and molecular structures of the rare earth carbonates with the general formulae [C(NH2)]3 [Ln(CO3)4 (H2O)]·2H2O (where Ln = Pr3+,Nd 3+,Sm3+,Eu3+,Gd3+,Tb 3+)and [C(NH2)]3 [Ln(CO3) 4]·2H2O (where Ln = Y3+,Dy 3+,Ho3+,Er3+, Tm3+,Yb 3+,Lu3+) were determined. The crystals consist of monomeric [Ln(CO3)4 (H2O)] 5-or [Ln(CO3)4] 5-complex anions in which the carbonate ligands coordinate to the Ln3+ion in a bidentate manner. The spectroscopic (UV/Vis/NIR and IR) properties of the crystalline lanthanide carbonates, as well as their aqueous solutions, were determined. Correlation between the spectroscopic and the structural data enabled us to conclude that the [Ln(CO3)4 (OH)]6-and [Ln-(CO 3)4]5- species predominate in the light and heavy lanthanide solutions, respectively. The nature of the Ln-O interaction was also discussed. The experimental data, as well as the theoretical calculations, indicated that the Ln-O(CO3 2-) bond is more covalent than the Ln-O(OH2) bond. Moreover, the covalency degree is larger for the heavy lanthanide ions. Inspection of the NBO results revealed that the oxygen hybrids, with the approximate composition sp4, form strongly polarized bonds with the 6s6p5d4 hybrids of lutetium. 2011 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
