Crystal Structure Determination From Powder Diffraction
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Structure Determination from Powder Diffraction Data
Author: William I. F. David
language: en
Publisher: Oxford University Press, USA
Release Date: 2002
Our understanding of the properties of materials, from drugs and proteins to catalysts and ceramics, is almost always based on structural information. This book describes the new developments in the realm of powder diffraction which make it possible for scientists to obtain such information even from polycrystalline materials. Written and edited by experts active in the field, and covering both the fundamental and applied aspects of structure solution from powder diffraction data, this book guides both novices and experienced practitioners alike through the maze of possibilities.
Fundamentals of Powder Diffraction and Structural Characterization of Materials
Author: Vitalij Pecharsky
language: en
Publisher: Springer Science & Business Media
Release Date: 2005-12-05
Fundamentals of Powder Diffraction and Structural Characterization of Materials provides an in-depth introduction to the theories and applications of the powder diffraction method for structure determination. The emphasis is placed on powder diffraction data collected using conventional x-ray sources, which remain primary tools for thousands of researchers and students in their daily experimental work. The book is divided into two parts: chapters one though three give essential theoretical background, while chapters four through seven guide the reader through practical aspects of extracting structural information from powder data. In addition color electronic versions of some 300 illustrations found throughout the book will be included.
Crystal Structure Determination
Author: Werner Massa
language: en
Publisher: Springer Science & Business Media
Release Date: 2013-03-09
To solve a crystal structure means to determine the precise spatial arrangements of all of the atoms in a chemical compound in the crystalline state. This knowledge gives a chemist access to a large range of information, including connectivity, conformation, and accurate bond lengths and angles. In addition, it implies the stoichiometry, the density, the symmetry and the three dimensional packing of the atoms in the solid. Since interatomic distances are in the region of100-300 pm or 1-3 A, 1 microscopy using visible light (wavelength Ä ca. 300-700 nm) is not applicable (Fig. l. l). In 1912, Max von Laue showed that crystals are based on a three dimensionallattice which scatters radiation with a wavelength in the vicinity of interatomic distances, i. e. X -rays with Ä = 50-300 pm. The process bywhich this radiation, without changing its wave length, is converted through interference by the lattice to a vast number of observable "reflections" with characteristic directions in space is called X-ray diffraction. The method by which the directions and the intensities of these reflections are measured, and the ordering of the atoms in the crystal deduced from them, is called X-ray struc ture analysis. The following chapter deals with the lattice properties of crystals, the starting point for the explanation of these interference phenomena. Interatomic distances Crystals . . . . . . . . . .