Determination of Debye temperature of α-iron by X-ray diffraction

Analysis of the constituents of renal and biliary calculi may be of help in the management of patients with calculous disease. Several methods of analysis are available for identifying these constituents. Most common are chemical methods, optical crystallography, x-ray diffraction, and infrared spectroscopy. The application of a SEM with x-ray analysis capabilities should be considered as an additional alternative.A scanning electron microscope equipped with an x-ray “mapping” attachment offers an additional dimension in its ability to locate elemental constituents geographically, and thus, provide a clue in determination of possible metabolic etiology in calculus formation. The ability of this method to give an undisturbed view of adjacent layers of elements in their natural state is of advantage in determining the sequence of formation of subsequent layers of chemical constituents.

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Carbonaceous materials used in the production of aluminium. Calcined coke. Determination of crystallite size of calcined petroleum coke by X-ray diffraction

10.3403/30106379u ◽

2015 ◽

Keyword(s):

Crystallite Size ◽

Petroleum Coke ◽

Carbonaceous Materials ◽

X Ray Diffraction ◽

X Ray ◽

Calcined Petroleum Coke ◽

Materials Used

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New Coordination Compounds of Fe(III) with Organic Ligands

Revista de Chimie ◽

10.37358/rc.08.12.2055 ◽

2009 ◽

Vol 59 (12) ◽

Author(s):

Mihaela Flondor ◽

Ioan Rosca ◽

Doina Sibiescu ◽

Mihaela-Aurelia Vizitiu ◽

Daniel-Mircea Sutiman ◽

...

Keyword(s):

Chemical Analysis ◽

Complex Compounds ◽

Organic Ligands ◽

X Ray Diffraction ◽

X Ray ◽

Elemental Chemical Analysis ◽

Structural Formulae ◽

Paramagnetic Properties

In this paper the synthesis and the study of some complex compounds of Fe(III) with ligands derived from: 2-(4-chloro-phenylsulfanyl)-1-(2-hydroxy-3,5-diiodo-phenyl)-ethanone (HL1), 1-(3,5-dibromo-2-hydroxy-phenyl)-2-phenylsulfanyl-ethanone(HL2), and 2-(4-chloro-phenylsulfanyl)-1-(3,5-dibromo-2-hydroxy-phenyl)-ethanone (HL3) is presented. The characterization of these complexes is based on method as: the elemental chemical analysis, IR and ESR spectroscopy, M�ssbauer, the thermogravimetric analysis and X-ray diffraction. Study of the IR and chemical analysis has evidenced that the precipitates form are a complexes and the combination ratio of M:L is 1:2. The central atoms of Fe(III) presented paramagnetic properties and a octaedric hybridization. Starting from this precipitation reactions, a method for the gravimetric determination of Fe(III) with this organic ligands has been possible. Based on the experimental data on literature indications, the structural formulae of the complex compounds are assigned.

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A Mechanical Loading/Synchrotron X-Ray Diffraction System for In-Situ Determination of Lattice Strains

10.21236/ada430973 ◽

2005 ◽

Author(s):

Matthew Miller ◽

Paul Dawson

Keyword(s):

Mechanical Loading ◽

X Ray Diffraction ◽

X Ray ◽

Lattice Strains

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Quantitative determination of the shock stage of L6 ordinary chondrites using X-ray diffraction

American Mineralogist ◽

10.2138/am-2021-7554 ◽

2020 ◽

Keyword(s):

Quantitative Determination ◽

Ordinary Chondrites ◽

X Ray Diffraction ◽

X Ray

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Crystal structure determination of the conformation of two bicyclo[3.3.1]nonan-ones

Canadian Journal of Chemistry ◽

10.1139/v85-198 ◽

1985 ◽

Vol 63 (6) ◽

pp. 1166-1169 ◽

Cited By ~ 4

Author(s):

John F. Richardson ◽

Ted S. Sorensen

Keyword(s):

Crystal Structure ◽

Direct Methods ◽

Chair Conformation ◽

Molecular Structures ◽

Boat Conformation ◽

X Ray Diffraction ◽

Space Group ◽

X Ray ◽

Final Agreement

The molecular structures of exo-7-methylbicyclo[3.3.1]nonan-3-one, 3, and the endo-7-methyl isomer, 4, have been determined using X-ray-diffraction techniques. Compound 3 crystallizes in the space group [Formula: see text] with a = 15.115(1), c = 7.677(2) Å, and Z = 8 while 4 crystallizes in the space group P21 with a = 6.446(1), b = 7.831(1), c = 8.414(2) Å, β = 94.42(2)°, and Z = 2. The structures were solved by direct methods and refined to final agreement factors of R = 0.041 and R = 0.034 for 3 and 4 respectively. Compound 3 exists in a chair–chair conformation and there is no significant flattening of the chair rings. However, in 4, the non-ketone ring is forced into a boat conformation. These results are significant in interpreting what conformations may be present in the related sp2-hybridized carbocations.

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