Physical Principles Of Chirality In Nmr
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| Author | : Piotr Garbacz |
| Publisher | : Royal Society of Chemistry |
| Total Pages | : 268 |
| Release | : 2024-09-20 |
| Genre | : Science |
| ISBN | : 1839169591 |
How can we study one of the most elusive molecular properties, chirality, using nuclear interactions with the magnetic field that are apparently insensitive to handedness? This book answers this question from the physicochemical point of view by providing a clear, coherent, and comprehensive review of methods used in NMR studies of chirality. Presented arguments based on fundamental physical and chemical laws and in-depth descriptions of new methods utilizing purely physical interactions are mainly addressed to spectroscopists in both academia and industry. The introductory chapters provide the reader with the basics of NMR spectroscopy as a tool for the study of chiral compounds, and those more interested in the methods of chiral discrimination will benefit from the brief description of their common points and reasons why some of them may or may not work. In the following chapters, the book shows rapid progress in a newly emerging field of chirality-sensitive NMR, in particular, a search for effects that give direct information about the absolute configuration of a molecule.
| Author | : G. N. La Mar |
| Publisher | : Elsevier |
| Total Pages | : 695 |
| Release | : 2013-10-22 |
| Genre | : Science |
| ISBN | : 1483272451 |
NMR of Paramagnetic Molecules: Principles and Applications is a compendium of papers that discusses the physical principles behind the technique of nuclear magnetic resonance, as well as, evaluates the scope and limitation of the applications of NMR in chemistry and biology. These papers emphasize the applications of the technique in chemistry and biochemistry where it widely used, particularlyon NMR experiments in the liquid state. Some papers describe the theoretical factors governing the resonance position and linewidth, and then also interpret magnetic resonance parameters in terms of electronic structure. Another paper investigates the gap between the mathematical complexities of earlier experiments and the operational aspects of chemical information from the spectra. Examples show studies in biochemical molecules and process in events where contact interactions are present either as a result of intrinsic molecular paramagnetism or are just induced through the addition of suitable paramagnetic probes. One paper presents the definitive and controversial results involving stereochemistry and deuterium NMR. This collection of papers will prove useful for nuclear physicists, researchers, and academicians in the field of nuclear physics.
| Author | : Harald Günther |
| Publisher | : John Wiley & Sons |
| Total Pages | : 842 |
| Release | : 2013-12-13 |
| Genre | : Science |
| ISBN | : 3527674772 |
Nuclear magnetic resonance (NMR) spectroscopy is one of the most powerful and widely used techniques in chemical research for investigating structures and dynamics of molecules. Advanced methods can even be utilized for structure determinations of biopolymers, for example proteins or nucleic acids. NMR is also used in medicine for magnetic resonance imaging (MRI). The method is based on spectral lines of different atomic nuclei that are excited when a strong magnetic field and a radiofrequency transmitter are applied. The method is very sensitive to the features of molecular structure because also the neighboring atoms influence the signals from individual nuclei and this is important for determining the 3D-structure of molecules. This new edition of the popular classic has a clear style and a highly practical, mostly non-mathematical approach. Many examples are taken from organic and organometallic chemistry, making this book an invaluable guide to undergraduate and graduate students of organic chemistry, biochemistry, spectroscopy or physical chemistry, and to researchers using this well-established and extremely important technique. Problems and solutions are included.
| Author | : Albert Guijarro |
| Publisher | : Royal Society of Chemistry |
| Total Pages | : 243 |
| Release | : 2022-06-10 |
| Genre | : Science |
| ISBN | : 1839163690 |
This book provides an interdisciplinary review of one of the great unsolved mysteries that has fascinated scientists for over 150 years: the origin of chirality in biomolecules. Current advances in fields as diverse as space exploration, prebiotic chemistry and high-energy physics may help to provide an answer. Important pieces of information will come from observations at the two frontiers of science: outer space and the subatomic world. Observation of distant planets, galaxies, and even actual sampling of celestial objects from beyond the solar system are projects currently underway. At the other end of the spectrum, there are experiments that study the elemental properties of matter, such as symmetry, and interactions with the fundamental forces. Completely revised and updated this new edition once again unifies all the theories of the origin of biomolecular homochirality together in a single source. This complete, interdisciplinary review of an intriguing subject condenses a large and disparate range of contributions from journals in almost every scientific field. The various theories have been organized, interrelated and explained in a unified way. It is fundamental, comprehensive and structured to be accessible for educational purposes.
| Author | : Terry Gordon Burlingame |
| Publisher | : |
| Total Pages | : 198 |
| Release | : 1970 |
| Genre | : Chemistry, Organic |
| ISBN | : |
| Author | : Albert Guijarro |
| Publisher | : Royal Society of Chemistry |
| Total Pages | : 164 |
| Release | : 2008 |
| Genre | : Science |
| ISBN | : 0854041567 |
Few times an unsolved issue in science has dealt with a larger number of approaches or theories intending to shed light on it and few times this has been done from so different, often orthogonal perspectives. This book covers a hot topic, one of the unsolved problems not just in chemistry, but in science
| Author | : Harald Günther |
| Publisher | : John Wiley & Sons |
| Total Pages | : 739 |
| Release | : 2013-11-04 |
| Genre | : Science |
| ISBN | : 3527330003 |
Auch die komplett überarbeitete 3. Auflage dieses bewährten Lehrbuchs überzeugt durch Klarheit, eine didaktisch gelungene Aufbereitung des Stoffes und ein hohes Maß an Praxisbezug. Das komplexe Thema wird mit einem Mindestmaß an Mathematik erklärt - ideal für Studenten, die die Grundlagen der NMR-Spektroskopie verstehen und das Verfahren effizient und präzise anwenden möchten. Die neue Auflage ist vollständig überarbeitet und aktualisiert. So sind rund 25% der Inhalte neu, darunter auch Kapitel zur biologischen NMR-Spektroskopie sowie viele Beispiele aus der organischen Chemie. Daher stellt dieses Fachbuch auch für Studenten in Grund- und Hauptstudium verwandter Fachrichtungen wie der Biochemie, Medizinischen Chemie, Pharmazeutischen Chemie und Materialwissenschaften einen wertvollen Leitfaden dar. Außerdem findet der Leser eine Vielzahl von Übungsaufgaben mit zugehörigen Lösungen.
| Author | : Thomas J. Wenzel |
| Publisher | : John Wiley & Sons |
| Total Pages | : 1303 |
| Release | : 2018-06-01 |
| Genre | : Science |
| ISBN | : 1119324777 |
An updated guide to the most current information available for determining how to use NMR spectroscopy to differentiate chiral compounds Differentiation of Chiral Compounds Using NMR Spectroscopy offers a thoroughly revised second edition to the essential volume that puts the focus on the chiral systems that are commercially available and have been widely vetted for use in NMR spectroscopy. The text covers a broad range of reagents that make it possible to determine the enantiomeric purity and assign the absolute configuration of many classes of compounds. Comprehensive in scope, the text describes the chiral NMR differentiating agents as derivatizing agents, solvating agents, metal-based reagents and liquid crystals and gels, and explains the range and types of compounds for which they can be used for analysis. New to this edition are the most recent findings in the field as well as the development of advanced NMR measurement techniques that allow for the simplification of complex spectra resulting in more readily identified enantiodifferentiation. This important resource: Includes the most recent coverage of a large range of compounds that can be analyzed using chiral NMR reagents Explores the use of chiral NMR reagents and explains their relationship to the stereochemistry of the analyzed molecules Offers the essential information needed to help decide which method is the best NMR method to apply to a class or molecules Contains experimental strategies for using the reagents that are likely to improve the quality of the results Differentiation of Chiral Compounds Using NMR Spectroscopy is a comprehensive guide designed for investigators planning to use NMR spectroscopy to determine enantiomeric purity or assign the absolute configuration of a compound.
| Author | : Takashiro Akitsu |
| Publisher | : BoD – Books on Demand |
| Total Pages | : 130 |
| Release | : 2019-02-06 |
| Genre | : Science |
| ISBN | : 1789851556 |
In chemistry, biology, and physics, "chirality" is an important concept in nature. Especially in chemistry, not only classical stereochemistry but also asymmetric organic synthesis, supramolecular chemistry, construction of bio-related molecules and molecular recognition became indispensable structural chemical keywords. However, in view of synthetic chemistry and its structural chemistry, chemistry dealing with chirality in relation to the more fundamental electronic state is still a minority. This book is particularly aimed at chiroptical spectroscopy, structural or physical features and theoretical computation of chirality.
| Author | : Paul G. Mezey |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 296 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 940113698X |
Molecular chirality is one of the fundamental aspects of chemistry. Chirality properties of molecules have implications in a wide variety of subjects, ranging from the basic quantum mechanical properties of simple of a few atoms to molecular optical activity, asymmetric synthesis, systems and the folding pattern of proteins. Chirality, in both the geometrical and the topological sense, has also been the subject of investigations in various branches of mathematics. In particular, new developments in a branch of topology, called knot theory, as well as in various branches of discrete mathematics, have led to a novel perspective on the topological aspects of molecular chirality. Some of the mathematical advances have already found applications to the interpretation of new concepts in theoretical chemistry and mathematical chemistry, as well as to novel synthetic approaches leading to new molecules of exceptional structural properties. Some of the new developments in molecular chirality have been truly fundamental to the theoretical understanding and to the actual practice of many aspects of chemistry. The progress in this field has been very rapid, even accelerating in recent years, and a review appears more than justified. This book offers a selection of subjects covering some of the latest developments. Our primary aim is to clarify some of the basic concepts that are the most prone to misinterpretation and to provide brief introductions to some of those subjects that are expected to have further, important contributions to our understanding of molecular properties and chemical reactivity.
