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

2016 ◽  
Vol 71 (11) ◽  
pp. 1105-1113 ◽  
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).

High-pressure Syntheses and Characterization of the Rare-earth Fluoride Borates RE2(BO3)F3 (RE=Tb, Dy, Ho)

2013 ◽  
Vol 68 (11) ◽  
pp. 1198-1206 ◽  
Author(s):  
Ernst Hinteregger ◽  
Michael Enders ◽  
Almut Pitscheider ◽  
Klaus Wurst ◽  
Gunter Heymann ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Rare Earth ◽  
Monoclinic Space Group ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
Structure Determinations ◽  
New Compounds ◽  
Rare Earth Fluorides

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.

RE4B4O11F2 (RE = Eu, Dy): New Phases Isotypic to the Fluoride Borate Gd4B4O11F2

2010 ◽  
Vol 65 (12) ◽  
pp. 1439-1444 ◽  
Author(s):  
Almut Pitscheider ◽  
Michael Enders ◽  
Hubert Huppertz
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Rare Earth ◽  
Structure Type ◽  
Lanthanum Fluoride ◽  
Space Group ◽  
Rare Earth Fluoride ◽  
High Pressure High Temperature ◽  
Earth Fluoride ◽  
Structure Determinations

The rare-earth fluoride borates RE4B4O11F2 (RE = Eu, Dy) were synthesized in a Walkertype multianvil apparatus from the corresponding rare-earth oxides and fluorides, and boron oxide. Eu4B4O11F2 was obtained under high-pressure/high-temperature conditions of 5 GPa and 900 °C, and Dy4B4O11F2 at 8 GPa and 1000 °C. The single-crystal structure determinations revealed that both compounds are isotypic to Gd4B4O11F2, crystallizing in the space group C2/c (Z = 4) with the parameters a = 1368.2(3), b = 465.4(1), c = 1376.6(3) pm, β = 91.2(1)°, V = 0.8765(3) nm3, R1 = 0.0232, and wR2 = 0.0539 (all data) for Eu4B4O11F2 and a = 1349.5(3), b = 460.9(1), c = 1362.5(3) pm, β = 91.3(1)°, V = 0.8472(3) nm3, R1 = 0.0353, and wR2 = 0.0729 (all data) for Dy4B4O11F2. These phases are entirely different from the recently discovered lanthanum fluoride borate La4B4O11F2, which exhibits the same constitution in another structure type with space group P21/c.

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

2010 ◽  
Vol 65 (10) ◽  
pp. 1213-1218 ◽  
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).

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

ChemInform ◽  
2014 ◽  
Vol 45 (6) ◽  
pp. no-no
Author(s):  
Ernst Hinteregger ◽  
Michael Enders ◽  
Almut Pitscheider ◽  
Klaus Wurst ◽  
Gunter Heymann ◽  
...  
Keyword(s):  
High Pressure ◽  
Rare Earth ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
The Rare Earth

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

2013 ◽  
Vol 68 (9) ◽  
pp. 951-959 ◽  
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

ChemInform Abstract: High-Pressure Synthesis and Characterization of the Rare-Earth Fluoride Borate LaB2O4F.

ChemInform ◽  
2013 ◽  
Vol 44 (48) ◽  
pp. no-no
Author(s):  
Ernst Hinteregger ◽  
Krisztina Kocsis ◽  
Thomas S. Hofer ◽  
Gunter Heymann ◽  
Lukas Perfler ◽  
...  
Keyword(s):  
High Pressure ◽  
Rare Earth ◽  
Synthesis And Characterization ◽  
High Pressure Synthesis ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
Pressure Synthesis ◽  
The Rare Earth

Ni6B22O39·H2O – extending the field of nickel borates

2017 ◽  
Vol 72 (12) ◽  
pp. 967-975 ◽  
Author(s):  
Martin K. Schmitt ◽  
Hubert Huppertz
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
High Temperature ◽  
Temperature Reaction ◽  
Orthorhombic Space Group ◽  
X Ray ◽  
High Temperature Reaction ◽  
High Pressure High Temperature ◽  
Related Phase

AbstractNi6B22O39·H2O was synthesized in a high-pressure/high-temperature reaction at 5 GPa/900°C. It crystallizes in the orthorhombic space group Pmn21 (no. 31) with the lattice parameters a=7.664(2), b=8.121(2) and c=17.402(2) Å. The crystal structure is discussed with regard to the isotypic compounds M6B22O39·H2O (M=Fe, Co) and the structurally related phase Cd6B22O39·H2O. Furthermore, the characterization of Ni6B22O39·H2O via X-ray powder diffraction and vibrational spectroscopy is reported.

Hochdruckmodifikationen der Lanthaniden(III)sulfide Ln2S3 (Ln = Lu-Ho, Y) mit U2S3-Struktur / High Pressure Modifications of the Rare Earth Sulfides Ln2S3 (Ln = Lu-Ho, Y) with U2S3-Structure

1975 ◽  
Vol 30 (11-12) ◽  
pp. 889-895 ◽  
Author(s):  
Klaus-Jürgen Range ◽  
Richard Leeb
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Rare Earth ◽  
Temperature Treatment ◽  
The Other ◽  
High Temperature Treatment ◽  
Ambient Conditions ◽  
High Pressure High Temperature ◽  
Trigonal Prismatic ◽  
The Rare Earth

New modifications of the rare-earth sesquisulfides Ln2S3 (Ln = Lu-Ho, Y) were found after high pressure, high temperature treatment and quenching to ambient conditions. The crystal structure of the prototype Tm2S3-III was determined from singlecrystal data. Tm2S3-III and the other members of the isotypic series Ln2S3-III are isostructural with U2S3. Some relations between the U2S3 structure and other structures with trigonal prismatic anion configurations are discussed.

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