Diffraction structure analysis

Until recently, an erroneous structure for SOCI2 has been widely used in the literature according to which ClSCl 114° and OSCl 106°. These angles originated from an early (1938) electron diffraction work in which values smaller than 114° were simply not tested for ClSCl. Modern techniques of electron diffraction structure analysis are more reliable in avoiding such artifacts. 

Abstract Electron diffraction Structure Analysis is generally used to study thin films... 

Key words electron diffraction, structure analysis, geometrical analysis of electron diffraction patterns... 

Oblique texture electron diffraction patterns (Fig.7) are main experimental material for the electron diffraction structure analysis since they have a large number of reflections, so that only one pattern can provide an almost three dimensional set of diffraction reflections. The formation of textures in specimens is achieved by the use of orienting agents. As in the preparation of single crystal films, use can be made of orienting supports, mechanical action or even the application of an electrical field. Electron... 

Vainshtein B.K., Zvyagin B.B., Avilov A.S. (1992) Electron diffraction structure analysis. In Electron diffraction techniques Vol. 1 (Ed. J. Cowley), lUCr Monographs on Crystallography, Oxford Science Publications, pp. 216-312. 

Klechkovskaya V.V., Imamov R.M. Electron diffraction structure analysis -from Vainshtein to our days. (2001) Crystallography Reports, v.46, N4. pp.598-613. 

QUANTITATIVE ELECTRON DIFFRACTION STRUCTURE ANALYSIS (EDSA)... 

Key words Electron diffraction structure analysis (EDSA), quantitative electron diffraction, electrostatic potential, chemical bonding... 

Quantitative Electron Diffraction Structure Analysis (EDSA) 117... 

New Instrumentation For Tern Electron Diffraction Structure Analysis 171... 

New Instrumentation For Tern Eleetron Diffraction Structure Analysis 175... 

Weirich, T. E. (2003) Electron Diffraction Structure Analysis structural research with low-quality diffraction data", Z. Kristallogr. 218, 269-278. 

Weirich, T. E. (2001), 31ectron crystallography without limits - Crystal structure of Ti45Sci6 redetermined hy electron diffraction structure analysis, /Icta Cryst. A57, 183-191. 

BK Vainshtein, BB Zvyagin, AS Avilov. Electron diffraction structure analysis, in Electron Diffraction Techniques, Vol. 1, J.M. Cowley, ed., Oxford Univ. Press, Oxford, 1992, pp. 216-312. 

Weirich, T.E. (2001). Electron crystallography without limits Crystal structure of Xi45Sei6 redetermined by electron diffraction structure analysis. Acta Cryst. A57,183-191. 

Up to now, the dynamical approach developed by Takagi is applied in electron diffraction structure analysis for accurate diagnosis of a thick distorted nanocrystals. Within this approach, the amplitudes of the transmitted and diffracted waves i given by the following Takagi-... 

Reetz et alJ33 described the stereoselective synthesis of partially protected a-hydroxy-y-amino acids 8 (Scheme 6) as potential pseudo-y-tum mimetics. X-ray diffraction structure analysis as well as NMR studies in CDC13 showed that these compounds display a pseu-docyclic eight-membered ring arising from an intramolecular H-bond between the amide carbonyl (i -1) and the alcohol hydroxy group (i). However, the ability of such a H-bond to induce or stabilize a pseudo-y-turn structure in an aqueous environment is doubtful. 

C4H9)4N]X, lies to the right under acidic conditions and in non aqueous solvent and is rather difficult to detect.7 (Ultracentrifugation solution molecular-weight determinations under several conditions are available.7) Attempts to grow single crystals of this product suitable for a X-ray diffraction structural analysis have been unsuccessful. 

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