High temperature crystal structure of sanidine Part I. A radiative microfurnace for single-crystal X-ray diffraction, acquiring control of the temperature against χ-angle movement

1996 ◽  
Vol 8 (1) ◽  
pp. 7-14 ◽  
Author(s):  
Shizuo Saito ◽  
Masahirο Shimizu ◽  
Mitsuyοshi Kimata
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Single Crystal ◽  
X Ray Diffraction ◽  
X Ray

High-temperature, high-pressure hydrothermal synthesis, crystal structure and photoluminescent properties, of K3[Gd1−xTbxGe3O8(OH)2] (x = 0, 0.3, 0.1, 1)

RSC Advances ◽  
2014 ◽  
Vol 4 (51) ◽  
pp. 26951-26955 ◽  
Author(s):  
Wei Liu ◽  
Min Yang ◽  
Ying Ji ◽  
Fuyang Liu ◽  
Ying Wang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
High Temperature ◽  
Hydrothermal Synthesis ◽  
Single Crystal ◽  
Hydrothermal Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Temperature High Pressure

A family of new lanthanide germanates K3LnGe3O8(OH)2 have been synthesized by a high-temperature, high-pressure hydrothermal method and characterized by single-crystal X-ray diffraction.

Synthesis, crystal structure, and luminescence properties of a new microporous europium silicate: Na3EuSi6O15·1.47H2O

RSC Advances ◽  
2015 ◽  
Vol 5 (37) ◽  
pp. 29121-29125 ◽  
Author(s):  
Wei Liu ◽  
Ying Ji ◽  
Fuyang Liu ◽  
Min Yang ◽  
Ying Wang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
High Temperature ◽  
Single Crystal ◽  
Xrd Analysis ◽  
Luminescence Properties ◽  
X Ray Diffraction ◽  
X Ray

A new microporous europium silicate, Na3EuSi6O15·1.47H2O (denoted as 1), was synthesized under high-temperature and high-pressure conditions, and structurally characterized by single-crystal and powder X-ray diffraction (XRD) analysis.

Incommensurately modulated crystal structure of flamite – natural analogue of \alpha _{\rm H}^{\prime}-Ca2SiO4

2019 ◽  
Vol 75 (6) ◽  
pp. 1137-1143
Author(s):  
Sergey V. Rashchenko ◽  
Yurii V. Seryotkin ◽  
Ella V. Sokol ◽  
Svetlana N. Kokh
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Ambient Temperature ◽  
Single Crystal ◽  
Diffraction Data ◽  
Natural Analogue ◽  
X Ray Diffraction ◽  
X Ray ◽  
Incommensurate Modulation ◽  
Cation Sites

Crystal structures of unquenchable high-temperature polymorphs of Ca2SiO4, important in cement chemistry, have eluded single-crystal X-ray analysis. However, the problem may be addressed by studying chemically stabilized Ca2SiO4 polymorphs at ambient temperature. Here an incommensurately modulated crystal structure of flamite [Pnma(0β0)00s, q = 0.2728 (2)b*, a = 6.8588 (2) Å, b = 5.4301 (2) Å, c = 9.4052 (3) Å] is described. It is a mineral analogue of orthorhombic \alpha _{\rm H}^{\prime}-Ca2SiO4 (stable between 1160 and 1425°C), naturally stabilized by substitution with phosphorus. The incommensurate modulation results from wave-like displacement of cation sites accompanied by tilting of (Si,P)O4 tetrahedra and variation of the Na/(Ca + Na + K) ratio along the modulation period. The studied sample from Hatrurim Basin (Negev Desert, Israel) with composition (Ca1.75K0.12Na0.12)1.99(Si0.74P0.26)1.00O4 also demonstrates pseudomerohedral cyclic twinning around the a axis, which results from pseudohexagonal topology of the crystal structure and complicates the indexing of X-ray diffraction data.

Die Kristallstruktur der orientierungsfehlgeordneten kubischen Hochtemperaturphase des Natriumperchlorats NaClO4 / The Crystal Structure of the Orientationally Disordered, Cubic High-temperature Phase of Sodium Perchlorate NaClO4

1979 ◽  
Vol 34 (3) ◽  
pp. 522-523 ◽  
Author(s):  
Hans Joachim Berthold ◽  
Brigitte Gabriele Kruska ◽  
Rudolf Wartchow
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Single Crystal ◽  
Diffraction Data ◽  
Sodium Perchlorate ◽  
High Temperature Phase ◽  
Temperature Phase ◽  
X Ray Diffraction ◽  
X Ray ◽  
Data Space

Abstract The crystal structure of the orientationally disordered, cubic high-temperature phase of NaC104 has been investigated using single crystal X-ray diffraction data. Space group Fm3m-O5h, Z = 4, sodium and chlorine as in NaCl, oxygen in position 96 j (occupation factor 1/6).

Synthesis, crystal structure, and luminescence properties of a new europium silicate

2016 ◽  
Vol 45 (23) ◽  
pp. 9631-9635 ◽  
Author(s):  
Wei Liu ◽  
Ying Ji ◽  
Ying Wang ◽  
Qiushi Sun ◽  
Xudong Zhao ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
High Temperature ◽  
Single Crystal ◽  
Luminescence Properties ◽  
X Ray Diffraction ◽  
X Ray

A new europium silicate, NaEuSi3O7(OH)2 (denoted as 1), was synthesized under high-temperature and high-pressure conditions, and structurally characterized by single-crystal and powder X-ray diffraction (XRD) analyses.

Crystal structure of an inclusion complex between chiral monoaza-15-crown-5 and S(–)-1-phenyl-ethyl ammonium percholorate

2003 ◽  
Vol 218 (5) ◽  
Author(s):  
Süheyla Özbey ◽  
F. B. Kaynak ◽  
M. Toğrul ◽  
N. Demirel ◽  
H. Hoşgören
Keyword(s):  
Crystal Structure ◽  
Inclusion Complex ◽  
Single Crystal ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
New Type

AbstractA new type of inclusion complex, S(–)-1 phenyl ethyl ammonium percholorate complex of R-(–)-2-ethyl - N - benzyl - 4, 7, 10, 13 - tetraoxa -1- azacyclopentadecane, has been prepared and studied by NMR, IR and single crystal X-ray diffraction techniques. The compound crystallizes in space group

scholarly journals High-pressure synthesis and crystal structure of the mixed-cation borate Ga4In4B15O33(OH)3

2019 ◽  
Vol 74 (4) ◽  
pp. 357-363
Author(s):  
Daniela Vitzthum ◽  
Hubert Huppertz
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
High Temperature ◽  
Diffraction Data ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Mixed Cation ◽  
High Pressure High Temperature ◽  
Pressure Synthesis

AbstractThe mixed cation triel borate Ga4In4B15O33(OH)3 was synthesized in a Walker-type multianvil apparatus at high-pressure/high-temperature conditions of 12.5 GPa and 1300°C. Although the product could not be reproduced in further experiments, its crystal structure could be reliably determined via single-crystal X-ray diffraction data. Ga4In4B15O33(OH)3 crystallizes in the tetragonal space group I41/a (origin choice 2) with the lattice parameters a = 11.382(2), c = 15.244(2) Å, and V = 1974.9(4) Å3. The structure of the quaternary triel borate consists of a complex network of BO4 tetrahedra, edge-sharing InO6 octahedra in dinuclear units, and very dense edge-sharing GaO6 octahedra in tetranuclear units.

scholarly journals An investigation of polyhedral deformation in two mixed-metal diarsenates: SrZnAs2O7and BaCuAs2O7

2015 ◽  
Vol 71 (4) ◽  
pp. 330-337 ◽  
Author(s):  
Sabina Kovač ◽  
Ljiljana Karanović ◽  
Tamara Đorđević
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
General Formula ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Open Framework ◽  
Geometrical Characteristics ◽  
Barium Copper

Two isostructural diarsenates, SrZnAs2O7(strontium zinc diarsenate), (I), and BaCuAs2O7[barium copper(II) diarsenate], (II), have been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction. The three-dimensional open-framework crystal structure consists of corner-sharingM2O5(M2 = Zn or Cu) square pyramids and diarsenate (As2O7) groups. Each As2O7group shares its five corners with five differentM2O5square pyramids. The resulting framework delimits two types of tunnels aligned parallel to the [010] and [100] directions where the large divalent nine-coordinatedM1 (M1 = Sr or Ba) cations are located. The geometrical characteristics of theM1O9,M2O5and As2O7groups of known isostructural diarsenates, adopting the general formulaM1IIM2IIAs2O7(M1II= Sr, Ba, Pb;M2II= Mg, Co, Cu, Zn) and crystallizing in the space groupP21/n, are presented and discussed.

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