Results 241 to 250 of about 33,849 (279)
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Nature Chemistry, 2017
Alasdair Skelton and Brett F. Thornton examine the twisting path through the several discoveries of ytterbium, from the eighteenth century to the present.
Alasdair, Skelton, Brett F, Thornton
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Alasdair Skelton and Brett F. Thornton examine the twisting path through the several discoveries of ytterbium, from the eighteenth century to the present.
Alasdair, Skelton, Brett F, Thornton
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Cyclopentadienides of ytterbium (III) and ytterbium (II)
Journal of Inorganic and Nuclear Chemistry, 1966Abstract The reaction of anhydrous ytterbium (III) chloride with sodium cyclopentadienide followed by crystallization from tetrahydrofuran (THF) gives the tetrahydrofuranate Yb(C5H5)3 · C4H8O (I), which can easily be converted into the ammoniate Yb(C5H5)3 · NH3 (II) by treatment with the stoichiometric amount of ammonia.
F. Calderazzo, R. Pappalardo, S. Losi
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2023
Fact sheet covering the potential in Montana for the critical mineral ytterbium.
R. Davison, A. Van Rythoven
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Fact sheet covering the potential in Montana for the critical mineral ytterbium.
R. Davison, A. Van Rythoven
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Ytterbium(III) Trifluoromethanesulfonate & Ytterbium(III) Trifluoromethanesulfonate Hydrate
2004[54761-04-5] C3F9O9S3Yb (MW 620.28) InChI = 1S/3CHF3O3S.Yb/c3*2-1(3,4)8(5,6)7;/h3*(H,5,6,7);/q;;;+3/p-3 InChIKey = AHZJKOKFZJYCLG-UHFFFAOYSA-K [314041-23-1] C3F9O9S3Yb·xH2O (x = 1–2) (MW 620.28) (organometallics derived from addition of organolithiums or organomagnesiums to Yb(OTf)3 display enhanced diastereoselectivities ...
Gary A. Molander +3 more
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Proceedings of LEOS'94, 2002
Trivalent ytterbium has been shown to have favorable properties over trivalent neodymium as a 1 /spl mu/m laser source when pumped at 940 or 968 nanometers. These properties include a broader absorption band, a longer fluorescence lifetime and smaller photon decrement between the pump beam and the Yb/sup 3+/ laser emission. An additional feature of the
R. Allen, L. Esterowitz, T.Y. Fan
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Trivalent ytterbium has been shown to have favorable properties over trivalent neodymium as a 1 /spl mu/m laser source when pumped at 940 or 968 nanometers. These properties include a broader absorption band, a longer fluorescence lifetime and smaller photon decrement between the pump beam and the Yb/sup 3+/ laser emission. An additional feature of the
R. Allen, L. Esterowitz, T.Y. Fan
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Magnetoresistance of Ytterbium
Physics Letters A, 1968Abstract The magnetoresistance of Yb at 1.3°K and in magnetic fields up to 20 kOe is reported. The Fermi surface of Yb supports no open orbits and the single-OPW model of Yb is not adequate. It is suggested that the Fermi surface is closed and occupies a small volume.
W.R. Datars, S. Tanuma
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Journal of the Less Common Metals, 1965
Abstract X-ray parametric, differential thermal and metallographic methods were used to establish the ytterbium-magnesium phase diagram. A eutectic reaction occurs at 31.5 at. % Mg and 496°C. A eutectoid reaction associated with the 792°C α-β transformation temperature of pure ytterbium occurs at 8.0 at. % Mg and 447°C. The maximum solid solubilities
O.D. McMasters, K.A. Gschneidner
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Abstract X-ray parametric, differential thermal and metallographic methods were used to establish the ytterbium-magnesium phase diagram. A eutectic reaction occurs at 31.5 at. % Mg and 496°C. A eutectoid reaction associated with the 792°C α-β transformation temperature of pure ytterbium occurs at 8.0 at. % Mg and 447°C. The maximum solid solubilities
O.D. McMasters, K.A. Gschneidner
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Journal of Inorganic and Nuclear Chemistry, 1971
Abstract The reaction of ytterbium metal with ammonia gas at elevated pressure yields ytterbium(II) amide, in contrast to the reaction with liquid ammonia, which yields a di- and tri-amide mixture. The Yb(NH 2 ) 2 was characterized by i.r. spectra, X-ray diffraction, and magnetic susceptibility. The equilibrium constant for the reaction Yb(NH 2 ) 2
James C. Warf, Viktor Gutmann
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Abstract The reaction of ytterbium metal with ammonia gas at elevated pressure yields ytterbium(II) amide, in contrast to the reaction with liquid ammonia, which yields a di- and tri-amide mixture. The Yb(NH 2 ) 2 was characterized by i.r. spectra, X-ray diffraction, and magnetic susceptibility. The equilibrium constant for the reaction Yb(NH 2 ) 2
James C. Warf, Viktor Gutmann
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2001
[19357-86-9] I2Yb (MW 426.84) InChI = 1S/2HI.Yb/h2*1H;/q;;+2/p-2 InChIKey = SJLISRWUWZVXNZ-UHFFFAOYSA-L (promotes the reduction of conjugated alkenes, leaving isolated alkenes unaffected;1a,2 effects the reductive cyclization of halo ketones with good diastereoselectivities3) Physical Data: light yellow powder; mp 780 °C;
Gary A. Molander, Christina R. Harris
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[19357-86-9] I2Yb (MW 426.84) InChI = 1S/2HI.Yb/h2*1H;/q;;+2/p-2 InChIKey = SJLISRWUWZVXNZ-UHFFFAOYSA-L (promotes the reduction of conjugated alkenes, leaving isolated alkenes unaffected;1a,2 effects the reductive cyclization of halo ketones with good diastereoselectivities3) Physical Data: light yellow powder; mp 780 °C;
Gary A. Molander, Christina R. Harris
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