X-ray powder diffraction data for [Co(NH3)5Br]Br2

1996 ◽  
Vol 11 (4) ◽  
pp. 297-298
Author(s):  
Hongxiang Wu ◽  
Lidun Ma ◽  
Xiaoliang Shen ◽  
Guoshun Shi

The X-ray powder diffraction pattern for the title compound is reported in the range 10<2θ<60°. The sample was purified by recrystallization and was indexed using the program DICVOL91 and TREOR90. Refined unit parameters for the orthorhombic system (Pnma or Pn21a) are: a=13.7098(8) Å, b=10.7153(7) Å, c=6.9473(4) Å, V=1020.59 Å3, Z=4, Dx=2.50 g cm−3. M20=49, F30=93(0.0075, 43).

1995 ◽  
Vol 10 (3) ◽  
pp. 207-209 ◽  
Author(s):  
V. E. Lamberti ◽  
M. A. Rodriguez ◽  
A. Navrotsky

The X-ray powder diffraction pattern for the title compound is reported in the range 5 ≤ 2θ ≤ 125°. The sample was prepared through solid-state reaction of BaCO3, CuO, and Pr6O11, and characterized with respect to oxygen content through iodometric titration. Refined parameters for the orthorhombic (space group Pmmm) unit cell are a = 3.8587(2) Å; b = 3.9302(1) Å; c= 11.7126(3) Å; a/b = 0.98181(6); a/c = 0.32945(2); b/c = 0.33555(1); Z = 1; Dx = 6.705(2) Mg m−3; V = 177.62(1) Å3; formula wt. = 717.48(16) g mol−1; SS/FOM: F30 = 48(0.005,127).


1999 ◽  
Vol 14 (4) ◽  
pp. 258-260 ◽  
Author(s):  
W. Paszkowicz

X-ray powder diffraction pattern for InN synthesized using a microwave plasma source of nitrogen is reported. The data were obtained with the help of an automated Bragg-Brentano diffractometer using Ni-filtered CuKα radiation. The lattice parameters for the wurtzite-type unit cell are ao=3.5378(1) Å, co=5.7033(1) Å. The calculated density is 6.921±0.002 g/cm3.


1993 ◽  
Vol 8 (4) ◽  
pp. 249-250 ◽  
Author(s):  
Chan Park ◽  
Robert L. Snyder

The X-ray powder diffraction pattern for a sample of the high-temperature superconducting phase Tl0.5Pb0.5Sr2CaCu2O6.5+δ has been determined. The sample was prepared by a molten salt technique and had a Tc of 96 K.


2013 ◽  
Vol 69 (2) ◽  
pp. i11-i12 ◽  
Author(s):  
Yongho Kee ◽  
Hoseop Yun

The structure of Li3V2(PO4)3has been reinvestigated from single-crystal X-ray data. Although the results of the previous studies (all based on powder diffraction data) are comparable with our redetermination, all atoms were refined with anisotropic displacement parameters in the current study, and the resulting bond lengths are more accurate than those determined from powder diffraction data. The title compound adopts the Li3Fe2(PO4)3structure type. The structure is composed of VO6octahedra and PO4tetrahedra by sharing O atoms to form the three-dimensional anionic framework∞3[V2(PO4)3]3−. The positions of the Li+ions in the empty channels can vary depending on the synthetic conditions. Bond-valence-sum calculations showed structures that are similar to the results of the present study seem to be more stable compared with others. The classical charge balance of the title compound can be represented as [Li+]3[V3+]2[P5+]3[O2−]12.


1989 ◽  
Vol 4 (1) ◽  
pp. 34-35 ◽  
Author(s):  
Diano Antenucci ◽  
Francois Fontan ◽  
Andre-Mathieu Fransolet

AbstractWolfeite (Fe0.59Mn0.40Mg0.01)2PO4(OH) from the Hagendorf-Sud pegmatite, Bavaria, Federal Republic of Germany, yields unit-cell parameters of: a = 12.319(1), b = 13.280(2), c = 9.840(1) Å and β = 108° 24(1). Dmeas. = 3.82(2); Dcalc. = 3.88. An indexed powder diffraction pattern is given.


1999 ◽  
Vol 14 (4) ◽  
pp. 305-307 ◽  
Author(s):  
Rodney T. Tettenhorst ◽  
Roger E. Gerkin

Crystal and X-ray powder diffraction data are presented for the title compound. The powder pattern was indexed and refined on a monoclinic cell with a=17.356(6) Å, b=3.528(1) Å, c=11.285(1) Å, β=94.23(2) Å. The cell volume and Dm=1.772 g/cm3 give Z=4. The space group could not be determined with certainty. The planes of the urate anions likely are stacked parallel or nearly parallel to (010).


1997 ◽  
Vol 12 (1) ◽  
pp. 20-21
Author(s):  
A. Gómez ◽  
J. Guerra-López ◽  
R. González ◽  
R. Pomés

Ammonium manganese phosphate monohydrate (NH4MnPO4.H2O) has been investigated by means of X-ray powder diffraction. The title compound is orthorhombic with unit-cell parameters a=5.7289(11), b=8.8167 (12), and c=4.9098 (8) Å.


1999 ◽  
Vol 14 (4) ◽  
pp. 276-279
Author(s):  
Wiesław Łasocha ◽  
Wiesław Surga ◽  
Alicja Rafalska-Łasocha

The X-ray powder diffraction data of polycrystalline fibrillar zinc trimolybdates ZnMo3O10·3.75H2O, ZnMo3O10·5H2O, and ZnMo3O10·10H2O, are reported. An uncommon diffraction pattern was recorded in the case of the “wet fibers” of ZnMo3O10·10H2O, which could be indexed assuming a model of parallel fibers with translation disorder along the fiber axis. The powder diffraction patterns, lattice parameters, space groups, and other data describing these compounds are presented in this paper.© 1999 International Centre for Diffraction Data.


2009 ◽  
Vol 24 (1) ◽  
pp. 29-31 ◽  
Author(s):  
B. Grushko

A monoclinic phase isostructural to Al4W was revealed in Al–Ni–Re close to the Al–Re terminal. It is assumed to be a ternary extension of the high-temperature Al4Re phase usually transforming in binary alloys even by sharp quenching from the existence temperatures. The powder X-ray diffraction pattern of this phase of the Al77Ni2.5Re20.5 composition was indexed for the Cm space group with a=5.1538(12) Å, b=17.410(5) Å, c=5.1546(15) Å, and β=100.548(16)°.


1998 ◽  
Vol 13 (1) ◽  
pp. 20-21 ◽  
Author(s):  
A. Paneque Quevedo ◽  
H. Novoa de Armas ◽  
L. Xuárez Marill

2,4-dichloro-5-nitrobenzoic acid (C7H3NO4Cl2) has been investigated by means of X-ray powder diffraction. The title compound is monoclinic with unit-cell parameters a=13.761 (2), b=8.435 (1), c=7.684 (1) Å, β=99.85 (1)°, V=878.5 (1) Å3, Z=4, Dx=1.772 g/cm3, space group P21/a (14).


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