Synthesis, Crystal Structure and Characterization of Two Rare Earth Substituted Keggin-Type Germanotungstates

2008 ◽  
Vol 26 (7) ◽  
pp. 1239-1243 ◽  
Author(s):  
Jing-Ping WANG ◽  
Qing-Xia YAN ◽  
Xiao-Di DU ◽  
Jing-Yang NIU
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Keggin Type

ChemInform Abstract: Synthesis, Crystal Structure and Characterization of Two Rare Earth Substituted Keggin-Type Germanotungstates.

ChemInform ◽  
2008 ◽  
Vol 39 (43) ◽  
Author(s):  
Jing-Ping Wang ◽  
Qing-Xia Yan ◽  
Xiao-Di Du ◽  
Jing-Yang Niu
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Keggin Type

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.

Structural Systematics of Rare Earth Complexes. VII. Crystal Structure of Bis(2,2'/6',2␛-Terpyridinium) Octaaquaterbium(III) Heptachloride Hydrate

1994 ◽  
Vol 47 (2) ◽  
pp. 391 ◽  
Author(s):  
CJ Kepert ◽  
BW Skeleton ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Single Crystal ◽  
Structural Characterization ◽  
Title Compound ◽  
Room Temperature ◽  
Chloride Ions ◽  
Full Matrix ◽  
X Ray

The room-temperature single-crystal X-ray structural characterization of the title compound (tpyH2)2[Tb(OH2)8]Cl7.~2⅓H2O is recorded. Crystals are triclinic, Pī , a 17.063(5), b 16.243(3), c 7.878(3) Ǻ, α 84.78(2), β 84.39(3), γ 87.81(2)°, Z = 2 formula units; 3167 'observed' diffractometer reflections were refined by full-matrix least-squares procedures to a residual of 0.057. Notable features of interest of the compound are the 'chelation' of chloride ions by the terpyridinium cations , and the existence of a free [Tb(OH2)8]2+ cation in the presence of an abundance of chloride ions.

Synthesis, X-ray Crystal Structure and Spectroscopic Characterization of a Hybrid Material Based on Glycine and α-Keggin Type Polyoxotungstate

2012 ◽  
Vol 22 (3) ◽  
pp. 141-142 ◽  
Author(s):  
Masoud Mirzaei ◽  
Hossein Eshtiagh-Hosseini ◽  
Mohsen Nikpour ◽  
Ahmad Gholizadeh ◽  
Afra Ebrahimi
Keyword(s):  
Crystal Structure ◽  
Hybrid Material ◽  
Spectroscopic Characterization ◽  
X Ray ◽  
Keggin Type

Synthesis and Crystal Structure Characterization of Oxysilicate Apatites for Stabilization of Sr and Rare-Earth Elements

2016 ◽  
Vol 99 (5) ◽  
pp. 1761-1768 ◽  
Author(s):  
Jingxian Wang ◽  
Fengxia Wei ◽  
Soo Min Lim ◽  
Erjia Liu ◽  
Claude Guet ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Structure Characterization ◽  
Synthesis And Crystal Structure

ChemInform Abstract: Dimeric Complexes of Rare-Earth Substituted Keggin-Type Silicotungstates: Syntheses, Crystal Structure and Solid State Properties.

ChemInform ◽  
2014 ◽  
Vol 45 (44) ◽  
pp. no-no
Author(s):  
Mukesh Kumar Saini ◽  
Rakesh Gupta ◽  
Swati Parbhakar ◽  
Anil Kumar Mishra ◽  
Rashi Mathur ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Solid State ◽  
Keggin Type ◽  
Dimeric Complexes ◽  
Complexes Of Rare Earth

Dimeric complexes of rare-earth substituted Keggin-type silicotungstates: syntheses, crystal structure and solid state properties

RSC Advances ◽  
2014 ◽  
Vol 4 (48) ◽  
pp. 25357-25364 ◽  
Author(s):  
Mukesh Kumar Saini ◽  
Rakesh Gupta ◽  
Swati Parbhakar ◽  
Anil Kumar Mishra ◽  
Rashi Mathur ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Solid State ◽  
Nmr Spectroscopy ◽  
Analytical Techniques ◽  
Keggin Type ◽  
Dimeric Complexes ◽  
Complexes Of Rare Earth ◽  
C Nmr

A series of rare-earth substituted dimeric complexes of Keggin-type silicotungstates were synthesized and characterized using various analytical techniques like SCXD, photoluminescence, 1H and 13C NMR spectroscopy.

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