ChemInform Abstract: Crystal Chemistry of Ba2YCu3O7 and Related Compounds

ChemInform ◽  
1988 ◽  
Vol 19 (22) ◽  
Author(s):  
M. O'KEEFFE ◽  
S. HANSEN
Keyword(s):  
Crystal Chemistry ◽  
Related Compounds

Structure determination of Na3DySi6O15 and crystal chemistry of zektzerite related compounds

2004 ◽  
Vol 177 (12) ◽  
pp. 4777-4784 ◽  
Author(s):  
Abdellah Ziadi ◽  
Harald Hillebrecht ◽  
Gerhard Thiele ◽  
Brahim Elouadi
Keyword(s):  
Crystal Chemistry ◽  
Structure Determination ◽  
Related Compounds

scholarly journals Crystal Chemistry of Copper-Based Oxide Superconductors and Related Compounds

1991 ◽  
Vol 99 (1150) ◽  
pp. 435-442 ◽  
Author(s):  
Takahiro WADA ◽  
Ataru ICHINOSE ◽  
Hisao YAMAUCHI ◽  
Shoji TANAKA
Keyword(s):  
Crystal Chemistry ◽  
Oxide Superconductors ◽  
Related Compounds

Crystal chemistry of copper-based oxide superconductors and related compounds

1991 ◽  
Vol 185-189 ◽  
pp. 729-730 ◽  
Author(s):  
Takahiro Wada ◽  
Ataru Ichinose ◽  
H. Yamauchi ◽  
Shoji Tanaka
Keyword(s):  
Crystal Chemistry ◽  
Oxide Superconductors ◽  
Related Compounds

Pyrochlores. VIII. Studies of some 2–5 Pyrochlores and Related Compounds and Minerals

1972 ◽  
Vol 50 (22) ◽  
pp. 3648-3666 ◽  
Author(s):  
François Brisse ◽  
David J. Stewart ◽  
V. Seidl ◽  
Osvald Knop
Keyword(s):  
Crystal Structures ◽  
Crystal Chemistry ◽  
Powder Diffraction ◽  
Mixed Crystals ◽  
Powder Diffractometer ◽  
Pyrochlore Type ◽  
Diffraction Patterns ◽  
Relationship Of ◽  
The Relationship ◽  
Related Compounds

The cubic pyrochlores Cd2Nb2O7, Cd2Ta2O7, Sn2Nb2O7, Sn2Ta2O7. Cd2Sb7O7, Ca2Sb2O7, Mn2Sb2O7, Pb2Sb2O7, and related compounds were prepared and investigated by a number of methods. On heating above 700°. Ca2Sb2O7(pyrochlore) transformed to Ca2Sb2O7(weberite), while Pb2Sb2O7(pyrochlore) changed to a rhombohedrally distorted Pb2Sb2O7 pyrochlore. Refinement of the crystal structures of Cd2Nb2O7 and Cd2Ta2O7 from powder diffractometer intensities yielded 0.434(2) and 0.434(3) respectively as the best estimates of x(O2). Specimens of natural bindheimite and stibiconite were also examined. Stibiconite from San Luis Potosi (Mexico) was shown, on the evidence of its Mössbauer 121Sb spectrum, to contain Sb(V) and Sb(III) in the approximate ratio of 0.2.BaCd2Cl6•5H2O and BaCd2Cl6•2H2O both give powder diffraction patterns of the pyrochlore type. The chlorine could be partially replaced by Br to give mixed crystals BaCd2Cl6−zBrz•5H2O almost up to z = 2.The crystal chemistry of 2–5 oxide pyrochlores and the relationship of the weberite to the pyrochlore phases are discussed.

Zur Kristallchemie der Oxoplatinate. Eine neue Phase der Zusammensetzung Sr4-ϰNaϰPtO6 (ϰ = 0,33) / On the Crystal Chemistry of Oxoplatinates. A New Phase of the Composition Sr4-ϰNaϰPtO6 (ϰ = 0,33)

1994 ◽  
Vol 49 (5) ◽  
pp. 581-584 ◽  
Author(s):  
G. Tams ◽  
Hk. Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Single Crystals ◽  
Crystal Chemistry ◽  
Space Group ◽  
X Ray ◽  
Group D ◽  
Related Compounds ◽  
New Phase ◽  
Trigonal Prismatic

Single crystals of Sr3.67Na0.33PtO6 were prepared by heating oxide mixtures in closed silver tubes and investigated by X-ray single crystal techniques. It crystallizes with trigonal symme­try, space group D63d-R3̅c (Nr. 167) with a = 9.6617, c = 11.6580 Å, Z = 6. Sr3.67Na0.33PtO6 belongs to the Sr4PtO6 type and is isotypic to K4CdCl6. One point position characterized by a trigonal prismatic O2- coordination is occupied by Na+ and Sr2+ statistically. The crystal structure is discussed with respect to the related compounds Sr3CuPtO6 and Ca3. 5Cu0.5PtO6.

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