ChemInform Abstract: High-Pressure Syntheses and Characterization of the Rare-Earth Fluoride Borates RE2(BO3)F3(RE: Tb, Dy, Ho).

The new rare-earth fluoride borates RE2(BO3)F3 (RE=Tb, Dy, Ho) were synthesized under highpressure/ high-temperature conditions of 1:5 GPa=1200 °C for Tb2(BO3)F3 and 3:0 GPa=900 °C for Dy2(BO3)F3 and Ho2(BO3)F3 in a Walker-type multianvil apparatus from the corresponding rareearth sesquioxides, rare-earth fluorides, and boron oxide. The single-crystal structure determinations revealed that the new compounds are isotypic to the known rare-earth fluoride borate Gd2(BO3)F3. The new rare-earth fluoride borates crystallize in the monoclinic space group P21/c (Z = 8) with the lattice parameters a=16:296(3), b=6:197(2), c=8:338(2) Å , b =93:58(3)° for Tb2(BO3)F3, a= 16:225(3), b = 6:160(2), c = 8:307(2) Å , b = 93:64(3)° for Dy2(BO3)F3, and a = 16:189(3), b = 6:124(2), c = 8:282(2) Å , β= 93:69(3)° for Ho2(BO3)F3. The four crystallographically different rare-earth cations (CN=9) are surrounded by oxygen and fluoride anions. All boron atoms form isolated trigonal-planar [BO3]3- groups. The six crystallographically different fluoride anions are in a nearly planar coordination by three rare-earth cations.

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RE4B4O11F2 (RE = Sm, Tb, Ho, Er): four new rare earth fluoride borates isotypic to Gd4B4O11F2

Zeitschrift für Naturforschung B ◽

10.1515/znb-2016-0123 ◽

2016 ◽

Vol 71 (11) ◽

pp. 1105-1113 ◽

Cited By ~ 2

Author(s):

Matthias Glätzle ◽

Hubert Huppertz

Keyword(s):

Crystal Structure ◽

High Pressure ◽

Rare Earth ◽

Monoclinic Space Group ◽

Rare Earth Fluoride ◽

High Pressure High Temperature ◽

Earth Fluoride ◽

Structure Determinations ◽

New Compounds

AbstractThe rare earth fluoride borates RE4B4O11F2 (RE = Sm, Tb, Ho, Er) were synthesized in a Walker-type multianvil apparatus from the corresponding rare earth oxides and fluorides with boron oxide. Sm4B4O11F2 was obtained under high-pressure/high-temperature conditions of 6 GPa/1100°C, Tb4B4O11F2 at 7.5 GPa/1200°C, and Ho4B4O11F2 and Er4B4O11F2 at 9.5 GPa/1300°C. The single-crystal structure determinations showed that all compounds are isotypic to the known rare earth fluoride borates RE4B4O11F2 (RE = Pr, Nd, Eu, Gd, Dy). They crystallize in the monoclinic space group C2/c (Z = 4). The structure is built up from BO4 tetrahedra as well as BO3 groups connected via common corners. Here, we report about the crystallographic characterization of these new compounds in comparison to the isotypic phases RE4B4O11F2 (RE = Pr, Nd, Eu, Gd, Dy).

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High-pressure Synthesis and Characterization of the Rare-earth Fluoride Borate LaB2O4F

Zeitschrift für Naturforschung B ◽

10.5560/znb.2013-3177 ◽

2013 ◽

Vol 68 (9) ◽

pp. 951-959 ◽

Cited By ~ 2

Author(s):

Ernst Hinteregger ◽

Krisztina Kocsis ◽

Thomas S. Hofer ◽

Gunter Heymann ◽

Lukas Perfler ◽

...

Keyword(s):

High Pressure ◽

Rare Earth ◽

Orthorhombic Space Group ◽

Raman Spectroscopic ◽

Rare Earth Fluoride ◽

High Pressure High Temperature ◽

Earth Fluoride ◽

Vibrational Bands ◽

A Chain ◽

The Rare Earth

The rare-earth fluoride borate LaB2O4F was synthesized under high-pressure=high-temperature conditions of 1.1 GPa and 1300 °C in a Walker-type multianvil apparatus from lanthanum oxide, lanthanum fluoride, and boron oxide. The single-crystal structure determination revealed that LaB2O4F is isotypic to CeB2O4F. The compound crystallizes in the orthorhombic space group Pbca (no. 61) with eight formula units and the lattice parameters a = 8.2493(9), b = 12.6464(6), c = 7.3301(5) Å , V = 764.7(2) Å3, R1 = 0.0354, and wR2 = 0.0474 (all data). The structure exhibits a 9+1 coordinated lanthanum cation, one threefold coordinated fluoride ion and a chain of corner-sharing [BO3]3- groups. In addition to the IR- and Raman-spectroscopic investigations, DFT calculations were performed to support the assignment of the vibrational bands

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High-pressure Syntheses and Characterization of the Rare Earth BoratesRE5(BO3)2F9(RE = Dy, Ho)

Zeitschrift für Naturforschung B ◽

10.5560/znb.2013-2313 ◽

2013 ◽

Vol 68b ◽

pp. 29-38 ◽

Cited By ~ 5

Author(s):

Ernst Hinteregger ◽

Gerhard Böhler ◽

Thomas S. Hofer ◽

Hubert Huppertz ◽

Keyword(s):

High Pressure ◽

Rare Earth ◽

The Rare Earth

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High-pressure Synthesis and Characterization of the Fluoride Borate Tm5(BO3)2F9

Zeitschrift für Naturforschung B ◽

10.1515/znb-2010-1006 ◽

2010 ◽

Vol 65 (10) ◽

pp. 1213-1218 ◽

Cited By ~ 6

Author(s):

Almut Haberer ◽

Michael Enders ◽

Reinhard Kaindl ◽

Hubert Huppertz

Keyword(s):

Crystal Structure ◽

High Pressure ◽

Spectroscopic Data ◽

Synthesis And Characterization ◽

Raman Spectroscopic ◽

Rare Earth Fluoride ◽

High Pressure High Temperature ◽

Earth Fluoride ◽

Pressure Synthesis

The rare earth fluoride borate Tm5(BO3)2F9 was synthesized from Tm2O3, B2O3, and TmF3 under high-pressure/high-temperature conditions of 5 GPa and 900 °C in a Walker-type multianvil apparatus. The single-crystal structure determination revealed that Tm5(BO3)2F9 is isotypic to the compounds RE5(BO3)2F9 (RE = Er,Yb). Tm5(BO3)2F9 crystallizes in the space group C2/c (Z = 4) with the parameters a = 2030.9(4), b = 606.2(2), c = 822.6(2) pm, β = 100.5(1)°, V = 995.7(3) Å3, R1 = 0.0341, and wR2 = 0.0724 (all data). The structure is composed of isolated BO3 groups, ninefold coordinated thulium cations, and fluoride anions. Infrared and Raman spectroscopic data of Tm5(BO3)2F9 are compared to the data of RE5(BO3)2F9 (RE = Er, Yb).

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