ChemInform Abstract: Na3As Revisited: High-Pressure Synthesis of Single Crystals and Structure Refinement.

ChemInform ◽  
2010 ◽  
Vol 26 (15) ◽  
pp. no-no
Author(s):  
P. HAFNER ◽  
K.-J. RANGE
Keyword(s):  
High Pressure ◽  
Single Crystals ◽  
Structure Refinement ◽  
High Pressure Synthesis ◽  
Pressure Synthesis

Hochdrucksynthese und Strukturverfeinerung von SrVO3, Sr2VO4 und Sr3V2O7 / High-Pressure Synthesis and Structure Refinement of SrVO3, Sr2VO4, and Sr3V2O7

1991 ◽  
Vol 46 (10) ◽  
pp. 1315-1318 ◽  
Author(s):  
Klaus-Jürgen Range ◽  
Franz Rau ◽  
Ulrich Klement
Keyword(s):  
High Pressure ◽  
Single Crystals ◽  
Crystal Structures ◽  
Structure Refinement ◽  
Type I ◽  
High Pressure Synthesis ◽  
Pressure Synthesis ◽  
Perovskite Type ◽  
Type Apparatus

Single crystals of SrVO3, Sr2VO4 and Sr3V2O7 have been obtained by high-pressure reactions in a modified belt-type apparatus. The crystal structures, refined from diffractometer data, are as follows: SrVO3, perovskite type, Pm3̄m, a = 3.8408(3) Å, R = 0.017, Rw = 0.018, composition from occupancy refinement of oxygen positions SrVO2.93(2); Sr2VO4, K2NiF4 type, I 4/mmm, a = 3.837(1), c = 12.569(1) Å, R = 0.014, Rw = 0.017; Sr3V2O7, Sr3Ti2O7 type, I 4/mmm, a = 3.839(1), c = 20.262(2) Å, R = 0.020, Rw = 0.029.

β-PtO2: High pressure synthesis of single crystals and structure refinement

1987 ◽  
Vol 22 (11) ◽  
pp. 1541-1547 ◽  
Author(s):  
K.-J. Range ◽  
F. Rau ◽  
U. Klement ◽  
A.M. Heyns
Keyword(s):  
High Pressure ◽  
Single Crystals ◽  
Structure Refinement ◽  
High Pressure Synthesis ◽  
Pressure Synthesis

Notizen: Sodium Metaperrhenate, NaReO4: High Pressure Synthesis of Single Crystals and Structure Refinement

1995 ◽  
Vol 50 (9) ◽  
pp. 1417-1418 ◽  
Author(s):  
Alexandra Atzesdorfer ◽  
Klaus-Jürgen Range
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Single Crystals ◽  
Sodium Nitrate ◽  
Structure Refinement ◽  
Type Structure ◽  
Space Group ◽  
High Pressure Synthesis ◽  
High Pressure High Temperature ◽  
Pressure Synthesis

Single crystals of sodium metaperrhenate, NaReO4, have been obtained by oxidation of rhenium metal with sodium nitrate under high pressure- high temperature conditions (modified Belttype apparatus, 4 kbar, 400 °C, Au-capsules). The crystals are tetragonal, space group I41/a, with a = 5.3654(4), c = 11.732(2) Å and Z = 4. The structure was refined to R - 0.026, Rw = 0.013 for 382 unique, absorption-corrected reflections. The scheelite-type structure for NaReO4, proposed by Beintema in 1937, could be confirmed. It consists of isolated ReO4 tetrahedra (Re-O= 1.728(2) Å ), connected by NaOs dodecahedra (<Na- O > = 2.582(2) Å).

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