Notizen: Die Kristallstruktur von KLiTe / The Crystal Structure of KLiTe

1993 ◽  
Vol 48 (12) ◽  
pp. 1835-1836 ◽  
Author(s):  
Horst Sabrowsky ◽  
Rolf-Dieter Hitzbleck ◽  
Petra Vogt
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
X Ray Diffraction ◽  
Fourier Methods ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters

The crystal structure of KLiTe described earlier as a dark grey powder compound has been determined by X-ray diffraction of single crystals. Very hygroscopic KLiTe crystallizes in the tetragonal space group P4/nmm (Z = 2) with the cell parameters a = 483.0(1) and c = 770.4(2) pm. The structure was determined from 211 independent reflections by Patterson and Fourier methods (R = 0.013; wR = 0.013).

Die Kristallstruktur von CsNaTe / The Crystal Structure o f CsNaTe

1996 ◽  
Vol 51 (11) ◽  
pp. 1576-1578 ◽  
Author(s):  
Karsten Fischer ◽  
Elisabeth Feldbaum -Möller ◽  
Petra Vogt ◽  
Michael Wachhold ◽  
Volker Winter ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
X Ray Diffraction ◽  
Fourier Methods ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters

The crystal structure of CsNaTe has been determined by X-ray diffraction of single crystals. The hygroscopic CsNaTe crystallizes in the tetragonal space group P4/nmm (Z = 2) with the cell parameters a = 527.6(1) and c = 847.8(2) pm. The structure was determined from 237 independent reflections by Patterson and Fourier methods (R1 = 0.065; wR2 = 0.080).

Kristallstruktur von RbNaO / Crystal Structure of RbNaO

1985 ◽  
Vol 40 (12) ◽  
pp. 1761-1762 ◽  
Author(s):  
Horst Sabrowsky ◽  
Petra Vogt-Mertens ◽  
Alfred Thimm
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Single Crystals ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters ◽  
Ordered Pairs

Abstract The colourless compound RbNaO has been prepared as described earlier [1 ], but single crystals were not yet available at that time. N ow its crystal structure was determined by X-ray diffraction techniques. The very hygroscopic RbNaO crystallizes in the tetragonal space group P4/nmm (Z = 2) with the cell parameters a - 406.8(1), c = 649.4(1) pm. The structure was solved from 1031 counter reflections (375 symmetry independent reflections) by using differential Fourier syntheses. Refining gives a least squares residue o f 0.086. The structure forms an am/-PbFCl-type geom etry with c-centered squares of sodium interspersed by antiparallel ordered pairs of R b-O

Kristallstruktur von Na4OBr2 / Crystal Structure of Na4OBr2

1990 ◽  
Vol 45 (2) ◽  
pp. 105-106 ◽  
Author(s):  
Karin Hippler ◽  
Stephan Sitta ◽  
Petra Vogt ◽  
Horst Sabrowsky
Keyword(s):  
Crystal Structure ◽  
Structure Type ◽  
X Ray Diffraction ◽  
Fourier Methods ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters ◽  
Group I

The colourless compound Na4OBr2 has been prepared and its crystal structure determined by X-ray diffraction. Very hygroscopic Na4OBr2 crystallizes in the tetragonal space group I 4/mmm (Z = 2) with the cell parameters a = 452.1(3) and c = 1490.8(1) pm. The structure was solved from 267 symmetry independent reflections by Patterson and Fourier methods (R = 0.028; wR = 0.029). Na4OBr2 crystallizes in the anti-K2NiF4-structure type and is isotypic to Na4OI2 and K4OBr2 which have been described earlier.

Zur Komplexchemie der Alkalimetalle: Kristallstruktur von RbLiS / On the Complex Chemistry of the Alkali Metals: The Crystal Structure of RbLiS

1989 ◽  
Vol 44 (8) ◽  
pp. 893-895 ◽  
Author(s):  
Horst Sabrowsky ◽  
Karin Hippler ◽  
Rolf-Dieter Hitzbleck ◽  
Stephan Sitta ◽  
Alfred Thimm ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Alkali Metals ◽  
Double Layers ◽  
X Ray Diffraction ◽  
Fourier Methods ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters ◽  
Complex Chemistry

The colourless compound RbLiS has been prepared as described earlier (H. Sabrowsky, A. Thimm, and P. Vogt-Mertens, Z. Naturforsch. 40b, 1759 (1985)) and its crystal structure determined by X-ray diffraction. Very hygroscopic RbLiS crystallizes in the tetragonal space group P4/nmm (Z = 2) with the cell parameters a = 4.424(3) Å, c = 7.255(2) Å. The structure was solved from 1635 counter reflections (155 symmetry independent reflections) by Patterson and Fourier methods (R = 0.031; wR = 0.031).The structure is characterized by layers of ∞2[LiS4/4]-tetrahedrons separated by double-layers of Rb+ to form a PbFCl-type geometry.

scholarly journals Crystal Chemistry and High-Temperature Behaviour of Ammonium Phases NH4MgCl3·6H2O and (NH4)2Fe3+Cl5·H2O from the Burned Dumps of the Chelyabinsk Coal Basin

Minerals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 486 ◽  
Author(s):  
Andrey A. Zolotarev ◽  
Elena S. Zhitova ◽  
Maria G. Krzhizhanovskaya ◽  
Mikhail A. Rassomakhin ◽  
Vladimir V. Shilovskikh ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Unit Cell ◽  
X Ray Diffraction ◽  
Coal Basin ◽  
Unit Cell Parameters ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters ◽  
Mineral Phases

The technogenic mineral phases NH4MgCl3·6H2O and (NH4)2Fe3+Cl5·H2O from the burned dumps of the Chelyabinsk coal basin have been investigated by single-crystal X-ray diffraction, scanning electron microscopy and high-temperature powder X-ray diffraction. The NH4MgCl3·6H2O phase is monoclinic, space group C2/c, unit cell parameters a = 9.3091(9), b = 9.5353(7), c = 13.2941(12) Å, β = 90.089(8)° and V = 1180.05(18) Å3. The crystal structure of NH4MgCl3·6H2O was refined to R1 = 0.078 (wR2 = 0.185) on the basis of 1678 unique reflections. The (NH4)2Fe3+Cl5·H2O phase is orthorhombic, space group Pnma, unit cell parameters a = 13.725(2), b = 9.9365(16), c = 7.0370(11) Å and V = 959.7(3) Å3. The crystal structure of (NH4)2Fe3+Cl5·H2O was refined to R1 = 0.023 (wR2 = 0.066) on the basis of 2256 unique reflections. NH4MgCl3·6H2O is stable up to 90 °C and then transforms to the less hydrated phase isotypic to β-Rb(MnCl3)(H2O)2 (i.e., NH4MgCl3·2H2O), the latter phase being stable up to 150 °C. (NH4)2Fe3+Cl5·H2O is stable up to 120 °C and then transforms to an X-ray amorphous phase. Hydrogen bonds provide an important linkage between the main structural units and play the key role in determining structural stability and physical properties of the studied phases. The mineral phases NH4MgCl3·6H2O and (NH4)2Fe3+Cl5·H2O are isostructural with natural minerals novograblenovite and kremersite, respectively.

About the crystal structure of La1−xSrxCoO3−δ (0≤x≤0.6)

1996 ◽  
Vol 11 (1) ◽  
pp. 31-34 ◽  
Author(s):  
Nicole M. L. N. P. Closset ◽  
René H. E. van Doorn ◽  
Henk Kruidhof ◽  
Jaap Boeijsma
Keyword(s):  
Crystal Structure ◽  
Unit Cell Parameter ◽  
Cell Parameter ◽  
Unit Cell ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters

The crystal structure of La1−xSrxCoO3−δ (0≤x≤0.6) has been studied, using powder X-Ray diffraction. The crystal structure shows a transition from rhombohedral distorted perovskite for LaCoO3−δ into cubic perovskite for La0.4Sr0.6CoO3−δ. The cubic unit cell parameter is ac=3.8342(1) Å for La0.4Sr0.6CoO3−δ, the space group probably being Pm3m. Using a hexagonal setting, the cell parameters for La0.5Sr0.5CoO3−δ, are a=5.4300(3) Å, c=13.2516(10) Å; a=5.4375(1) Å, c=13.2313(4) Å for La0.6Sr0.4CoO3−δ; a=5.4437(1) Å, c=13.2085(5) Å for La0.7Sr0.3CoO3−δ; a=5.4497(2) Å, c=13.1781(6) Å for La0.8Sr0.2CoO3−δ and a=5.4445(2) Å, c=13.0936(6) Å for LaCoO3−δ with the space group probably being R3c.

scholarly journals On the crystal structure of the ordered vacancy compound Cu3In5Te9

2019 ◽  
Vol 65 (4 Jul-Aug) ◽  
pp. 360 ◽  
Author(s):  
G. E. Delgado ◽  
C. Rincón ◽  
G. Marroquin
Keyword(s):  
Crystal Structure ◽  
Diffraction Data ◽  
Rietveld Method ◽  
Structural Models ◽  
Unit Cell ◽  
X Ray Diffraction ◽  
Unit Cell Parameters ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters

The crystal structure of the ordered vacancy compound (OVC) Cu3In5Te9 was analyzed using powder X-ray diffraction data. Several structural models were derived from the structure of the Cu-poor Cu-In-Se compound b-Cu0.39In1.2Se2 by permuting the cations in the available site positions. The refinement of the best model by the Rietveld method in the tetragonal space group P2c (Nº 112), with unit cell parameters a = 6.1852(2) Å, c = 12.3633(9) Å, V = 472.98(4) Å3, led to Rp = 7.1 %, Rwp = 8.5 %, Rexp = 6.4 %, S = 1.3 for 162 independent reflections. This model has the following Wyckoff site atomic distribution: Cu1 in 2e (0,0,0); In1 in 2f (½,½,0), In2 in 2d (0,½,¼); Cu2-In3 in 2b (½,0,¼); in 2a (0,0,¼); Te in 8n (x,y,z).

scholarly journals New data on gersdorffite and associated minerals from the Peloritani Mountains (Sicily, Italy)

2021 ◽  
Vol 33 (6) ◽  
pp. 717-726
Author(s):  
Daniela Mauro ◽  
Cristian Biagioni ◽  
Federica Zaccarini
Keyword(s):  
Crystal Structure ◽  
Microprobe Analysis ◽  
Unit Cell ◽  
X Ray Diffraction ◽  
Unit Cell Parameters ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters ◽  
Quartz Veins ◽  
Group I

Abstract. Gersdorffite, ideally NiAsS, and associated minerals from Contrada Zillì (Peloritani Mountains, Sicily, Italy) have been characterized through electron microprobe analysis and X-ray diffraction. Primary minerals, hosted in quartz veins, are represented by gersdorffite, tetrahedrite-(Fe), and chalcopyrite with minor pyrite and galena. Rare aikinite inclusions were observed in tetrahedrite-(Fe) and chalcopyrite. Gersdorffite occurs as euhedral to subhedral crystals, up to 1 mm in size, with (Sb,Bi)-enriched cores and (Fe,As)-enriched rims. Its chemical composition is (Ni0.79−0.95Fe0.18−0.04Co0.04−0.01)(As0.90−1.03Sb0.10−0.00Bi0.02−0.00)S0.98−0.92. It crystallizes in the space group P213, with unit-cell parameters a=5.6968(7) Å, V=184.88(7) Å3, and Z=4, and its crystal structure was refined down to R1= 0.035. Associated tetrahedrite-(Fe) has chemical formula (Cu5.79Ag0.07)Σ5.86(Cu3.96Fe1.59Zn0.45)Σ6.00(Sb3.95As0.17Bi0.03)Σ4.15S13.06, with unit-cell parameters a= 10.3815(10) Å, V=1118.9(3) Å3, and space group I-43m. Its crystal structure was refined to R1=0.027. Textural and crystallographic data suggest a polyphasic crystallization of gersdorffite under low-temperature conditions.

Kaliumlithiumsulfid, KLiS: Das erste Interalkalimetallsulfid / Potassium Lithium Sulphide, KLiS: The First Inter Alkaline Metal Sulphide

1985 ◽  
Vol 40 (6) ◽  
pp. 733-735 ◽  
Author(s):  
Horst Sabrowsky ◽  
Alfred Thimm ◽  
Petra Mertens
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Alkaline Metal ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Metal Sulphide ◽  
Cell Parameters ◽  
Yellow Compound

Abstract The compound KLiS has been prepared and its crystal structure is determined by X-ray diffraction techniques. The hygroscopic, yellow compound crystallizes in the tetragonal space group P4/nmm (Z = 2) with the cell parameters a - 431.79(4), c = 696.20(9) pm. The structure was solved from 2100 counter reflections (356 symmetry independent reflections) through a Patterson synthesis and refinement by Fourier syntheses to a least squares residue of 0.026. The structure is characterized by c-centered squares of lithium layers interspersed by anti-parallel ordered K-S-pairs forming an anti-PbFCl-type geometry.

Filling up another Gap: Synthesis and Crystal Structure of Ba2H3I

2011 ◽  
Vol 66 (11) ◽  
pp. 1087-1091 ◽  
Author(s):  
Olaf Reckeweg ◽  
Francis J. DiSalvo
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Single Crystals ◽  
Title Compound ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Bond Lengths

Colorless and transparent single crystals of Ba2H3I were obtained by reacting Ba with dried and sublimed NH4I in a 4 : 1 molar ratio in silica-jacketed Nb ampoules at 1100 K for 13 h. The crystal structure of the title compound was determined and refined by means of single-crystal X-ray diffraction. Ba2H3I crystallizes in a stuffed anti-CdI2 structure isotypic to Sr2H3I in the space group P3̄m1 (no. 164) with the lattice parameters a = 451.86(12) and c = 811.84(23) pm. The structural results for Ba2H3I are consistent with bond lengths and coordination geometries of related binary and ternary hydrides

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