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Strength from Weakness: Structural Consequences of Weak Interactions in Molecules, Supermolecules, and Crystals

2012-12-06 Science
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Release : 2012-12-06
Genre : Science
Kind : eBook
Book Rating : 46X/5 ( reviews)

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Book Synopsis Strength from Weakness: Structural Consequences of Weak Interactions in Molecules, Supermolecules, and Crystals by : Aldo Domenicano

Download or read book Strength from Weakness: Structural Consequences of Weak Interactions in Molecules, Supermolecules, and Crystals written by Aldo Domenicano. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: The accurate determination of the structure of molecular systems provides information about the consequences of weak interactions both within and between molecules. These consequences impact the properties of the materials and the behaviour in interactions with other substances. The book presents modern experimental and computational techniques for the determination of molecular structure. It also highlights applications ranging from the simplest molecules to DNA and industrially significant materials. Readership: Graduate students and researchers in structural chemistry, computational chemistry, molecular spectroscopy, crystallography, supramolecular chemistry, solid state chemistry and physics, and materials science.

Electron Crystallography

2006-08-18 Science
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Release : 2006-08-18
Genre : Science
Kind : eBook
Book Rating : 204/5 ( reviews)

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Book Synopsis Electron Crystallography by : Thomas E. Weirich

Download or read book Electron Crystallography written by Thomas E. Weirich. This book was released on 2006-08-18. Available in PDF, EPUB and Kindle. Book excerpt: During the last decade we have been witness to several exciting achievements in electron crystallography. This includes structural and charge density studies on organic molecules complicated inorganic and metallic materials in the amorphous, nano-, meso- and quasi-crystalline state and also development of new software, tailor-made for the special needs of electron crystallography. Moreover, these developments have been accompanied by a now available new generation of computer controlled electron microscopes equipped with high-coherent field-emission sources, cryo-specimen holders, ultra-fast CCD cameras, imaging plates, energy filters and even correctors for electron optical distortions. Thus, a fast and semi-automatic data acquisition from small sample areas, similar to what we today know from imaging plates diffraction systems in X-ray crystallography, can be envisioned for the very near future. This progress clearly shows that the contribution of electron crystallography is quite unique, as it enables to reveal the intimate structure of samples with high accuracy but on much smaller samples than have ever been investigated by X-ray diffraction. As a tribute to these tremendous recent achievements, this NATO Advanced Study Institute was devoted to the novel approaches of electron crystallography for structure determination of nanosized materials.

Science of Crystal Structures

2015-09-09 Science
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Release : 2015-09-09
Genre : Science
Kind : eBook
Book Rating : 270/5 ( reviews)

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Book Synopsis Science of Crystal Structures by : Istvan Hargittai

Download or read book Science of Crystal Structures written by Istvan Hargittai. This book was released on 2015-09-09. Available in PDF, EPUB and Kindle. Book excerpt: A volume which includes entries on quasicrystals, icosahedral packing, other packing considerations, extended structures, data treatment and data mining is presented by luminaries from the crystallography community. Several of the contributions are from the schools of such trend-setting crystallographers as J. Desmond Bernal and Aleksandr I. Kitaigorodskii. Internationally renowned scientists contributed such as Tom L. Blundell, Johann Jacob Burckhardt, John L. Finney, Jenny P. Glusker, Nobel laureate Herbert A. Hauptman, the 2014 Ewald-Prize winner A. Janner, Aminoff-Prize winner Isabella Karle, Nobel laureate Jerome Karle, Buckley-Prize winner Alan L. Mackay, Ewald-Prize winner David Sayre, Vladimir Shevchenko, and J. Fraser Stoddart. A few frontier topics dominate the selected material. Pioneers of the direct methods describe the phase problem and how it was solved, including the mathematical approach and the utilization of experience with gas-phase electron diffraction. The reviews by Herbert Hauptman, Jerome and Isabella Karle, and David Sayre reach to the present day in assessing the possibilities of X-ray crystallography. Another focus topic is the investigation of systems that are outside the so-called classical system of crystals. They include quasicrystals, imperfect and very small crystals, supramolecular species, crystal structures without lattice, clusters, nanomaterials among others. Application of synchrotron and cryoprotection techniques, the free-electron laser flash technique and others are mentioned in addition to X-ray crystallography. The relationship between structural and materials properties are examined and uncovered. The broader topics of the so-called generalized crystallography include polymers, clusters, polydisperse chain assemblies, and giant icosahedral fullerenes. There are some key contributions related to the structural investigation of biological macromolecules.

Relativistic Methods for Chemists

2010-04-15 Science
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Release : 2010-04-15
Genre : Science
Kind : eBook
Book Rating : 754/5 ( reviews)

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Book Synopsis Relativistic Methods for Chemists by : Maria Barysz

Download or read book Relativistic Methods for Chemists written by Maria Barysz. This book was released on 2010-04-15. Available in PDF, EPUB and Kindle. Book excerpt: “Relativistic Methods for Chemists”, written by a highly qualified team of authors, is targeted at both experimentalists and theoreticians interested in the area of relativistic effects in atomic and molecular systems and processes and in their consequences for the interpretation of the heavy element’s chemistry. The theoretical part of the book focuses on the relativistic methods for molecular calculations discussing relativistic two-component theory, density functional theory, pseudopotentials and correlations. The experimentally oriented chapters describe the use of relativistic methods in different applications focusing on the design of new materials based on heavy element compounds, the role of the spin-orbit coupling in photochemistry and photobiology, and chirality and its relations to relativistic description of matter and radiation. This book is written at an intermediate level in order to appeal to a broader audience than just experts working in the field of relativistic theory.

The Chemistry of Superheavy Elements

2013-11-30 Science
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Release : 2013-11-30
Genre : Science
Kind : eBook
Book Rating : 662/5 ( reviews)

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Book Synopsis The Chemistry of Superheavy Elements by : Matthias Schädel

Download or read book The Chemistry of Superheavy Elements written by Matthias Schädel. This book was released on 2013-11-30. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of "The Chemistry of the Superheavy Elements" provides a complete coverage of the chemistry of a series of elements beginning with atomic number 104 – the transactinides or superheavy elements – including their nuclear properties and production in nuclear reactions at heavy-ion accelerators. The contributors to this work include many renowned scientists who, during the last decades, have made vast contributions towards understanding the physics and chemistry of these elusive elements, both experimentally and theoretically. The main emphasis here is on demonstrating the fascinating studies involved in probing the architecture of the Periodic Table at its uppermost end, where relativistic effects drastically influence chemical properties. All known chemical properties of these elements are described together with the experimental techniques applied to study these short-lived man-made elements one atom-at-a-time. The status of theoretical chemistry and of empirical models is presented as well as aspects of nuclear physics. In addition, one chapter outlines the meanderings in this field from a historical perspective and the search for superheavy elements in Nature.

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