Download or read book Symmetry and Chirality written by C. Alden Mead and published by . This book was released on 1974 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Symmetry Spectroscopy and Crystallography written by Robert Glaser and published by John Wiley & Sons. This book was released on 2015-10-05 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written in a clear and understandable manner, this book provides a comprehensive, yet non-mathematical, treatment of the topic, covering the basic principles of symmetry and the important spectroscopic techniques used to probe molecular structure. The chapters are extensively illustrated and deal with such topics as symmetry elements, operations and descriptors, symmetry guidelines, high-fidelity pseudosymmetry, crystallographic symmetry, molecular gears, and experimental techniques, including X-ray crystallography and NMR spectroscopy. As an additional feature, 3D animations of most of the structures and molecules covered are available online at wiley.com. As a result, chemists learn how to understand and predict molecular structures and reactivity. Authored by a renowned expert with numerous publications and an excellent track record in research and teaching, this is a useful source for graduate students and researchers working in the field of organic synthesis, physical chemistry, biochemistry, and crystallography, while equally serving as supplementary reading for courses on stereochemistry, organic synthesis, or crystallography.
Download or read book Symmetry and Chirality written by C. A. Mead and published by . This book was released on 2014-01-15 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Symmetry and Group theory in Chemistry written by M Ladd and published by Elsevier. This book was released on 1998-09-01 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive discussion of group theory in the context of molecular and crystal symmetry, this book covers both point-group and space-group symmetries. - Provides a comprehensive discussion of group theory in the context of molecular and crystal symmetry - Covers both point-group and space-group symmetries - Includes tutorial solutions
Download or read book The Origin of Chirality in the Molecules of Life written by Albert Guijarro and published by Royal Society of Chemistry. This book was released on 2008 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Symmetry and Combinatorial Enumeration in Chemistry written by Shinsaku Fujita and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written to introduce a new approach to stereochemical problems and to combinatorial enumerations in chemistry. This approach is based on group the ory, but different from conventional ways adopted by most textbooks on chemical group theory. The difference sterns from their starting points: conjugate subgroups and conjugacy classes. The conventional textbooks deal with linear representations and character ta bles of point groups. This fact implies that they lay stress on conjugacy classesj in fact, such group characters are determined for the respective conjugacy classes. This approach is versatile, since conjugacy classes can be easily obtained by ex amining every element of a group. It is unnecessary to know the group-subgroup relationship of the group, which is not always easy to obtain. The same situa tion is true for chemical enumerations, though these are founded on permutation groups. Thus, the P6lya-Redfield theorem (1935 and 1927) uses a cycle index that is composed of terms associated with conjugacy classes.
Download or read book Basic Organic Chemistry for the Life Sciences written by Hrvoj Vančik and published by Springer Nature. This book was released on 2022-01-18 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook is designed for students of biology, molecular biology, ecology,medicine, agriculture, forestry and other professions where the knowledge of organic chemistry plays an important role. The work may also be of interest to non-professionals, as well as to teachers in high schools. The book consists of 13 chapters that cover the essentials of organic chemistry, including - basic principles of structure and constitution of organic compounds, - the elements of the nomenclature, - the concepts of the nature of chemical bond, - introductions in NMR and IR spectroscopy, - the concepts and main classes of the organic reaction mechanisms, - reactions and properties of common classes or organic compounds, - and the introduction to the chemistry of the natural organic products followed by basic principles of the reactions in living cells. This second edition includes revisions and suggestions made by the readers of the first edition and the author's colleagues. In addition, it includes substantial changes compared to the first edition. The chapter on Cycloaddition has been completed by including the other pericyclic reactions (sigmatropic rearrangements, electrocyclic reactions). The chapter on Organic Natural Products has been extended to include new section covering the principles of organic synthesis. New chapter "Organic Supramolecular and Supermolecular Structures" is added. This chapter covers the basic knowledge about the molecular recognition, supramolecular structures, and the mechanisms of the enzyme catalyzed reactions.
Download or read book Mirror Image Asymmetry written by James P. Riehl and published by John Wiley & Sons. This book was released on 2011-04-22 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: An overview of the importance and consequences of asymmetry from molecules to the macroscopic world As scientists have become more capable of probing the structure of three-dimensional objects at the molecular level, the need to understand the concept and the consequences of mirror-image asymmetry—chirality—has increased enormously. Written at an introductory level, Mirror-Image Asymmetry provides an overview of the importance and effects of asymmetry from the atomic and molecular world of physics and chemistry to the organisms and structures that we see and use in our everyday life. The reader will develop a broad appreciation of three-dimensional asymmetry from the microscopic molecular world to the macroscopic world of handedness, automobile driving, windmills, sports, and similar phenomena. The book features: An introduction to basic definitions and the nomenclature of asymmetric and dissymmetric molecules Up-to-date examples of the importance and consequences of asymmetry in modern drug applications, current theories of the origin of asymmetry in nature, and examples of molecular asymmetry in smell, taste, and insect communication Many illustrations, chemical structures, and photographs that enable the reader to connect the actual asymmetrical structures to the different phenomena that depend on structural asymmetry In the 150 years since Louis Pasteur discovered asymmetry in molecular structures, scientists have made great progress in understanding how interactions between chiral molecules influence biochemical processes. This knowledge is leading to very sophisticated asymmetric synthetic techniques that have greatly benefitted many research groups especially those in the pharmaceutical industry. This guide to the role of molecular and macroscopic chirality will inspire students and scientists in chemistry, biology, physics, and drug discovery.
Download or read book Reflections on Symmetry written by Edgar Heilbronner and published by John Wiley & Sons. This book was released on 1993 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Organic Chemistry 1 written by Martin Walker and published by State University of New York Oer Services. This book was released on 2018-08-11 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Developments in Gauge Theories written by G. 't Hooft and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Almost all theories of fundamental interactions are nowadays based on the gauge concept. Starting with the historical example of quantum electrodynamics, we have been led to the successful unified gauge theory of weak and electromagnetic interactions, and finally to a non abelian gauge theory of strong interactions with the notion of permanently confined quarks. The. early theoretical work on gauge theories was devoted to proofs of renormalizability, investigation of short distance behaviour, the discovery of asymptotic freedom, etc . . , aspects which were accessible to tools extrapolated from renormalised perturbation theory. The second phase of the subject is concerned with the problem of quark confinement which necessitates a non-perturbative understanding of gauge theories. This phase has so far been marked by the introduc tion of ideas from geometry, topology and statistical mechanics in particular the theory of phase transitions. The 1979 Cargese Institute on "Recent Developments on Gauge Theories" was devoted to a thorough discussion of these non-perturbative, global aspects of non-abelian gauge theories. In the lectures and seminars reproduced in this volume the reader wilf find detailed reports on most of the important developments of recent times on non perturbative gauge fields by some of the leading experts and innovators in this field. Aside from lectures on gauge fields proper, there were lectures on gauge field concepts in condensed matter physics and lectures by mathematicians on global aspects of the calculus of variations, its relation to geometry and topology, and related topics.
Download or read book Quarks Baryons and Chiral Symmetry written by Atsushi Hosaka and published by World Scientific. This book was released on 2001 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ch. 1. Ingredients of the standard model. 1.1. Strong interaction - QCD. 1.2. Electroweak theory. 1.3. CKM mass matrix -- ch. 2. Symmetries and wave functions. 2.1. Why is symmetry important? 2.2. Symmetry current. 2.3. SU(2). 2.4. SU(3). 2.5. Multi-particle states. 2.6. Product-states. 2.7. Quark model wave functions -- ch. 3. Chiral symmetry. 3.1. Lorentz group and chiral fermions. 3.2. Chiral group. 3.3. Spontaneous breaking of chiral symmetry -- ch. 4. The sigma model. 4.1. Linear sigma model. 4.2. Non-linear sigma model. 4.3. Fermion field -- ch. 5. Chiral bag model. 5.1. The MIT bag model. 5.2. The little bag model. 5.3. The Skyrme model. 5.4. The chiral bag model. 5.5. Chiral casimir effects. 5.6. The edgehog solution -- ch. 6. Nucleon properties. 6.1. Semiclassical method. 6.2. Isospin rotation of the hedgehog solution. 6.3. Axial properties. 6.4. Non-rigid quantization of the skyrmion. 6.5. Electromagnetic properties. 6.6. Chiral bag with vector mesons -- ch. 7. Large-Nc baryons. 7.1. Introduction. 7.2. General counting rules. 7.3. Counting rules for solitons. 7.4. Large-Nc algebra for baryons. 7.5. Finite Nc. 7.6. Other representations and gA -- ch. 8. Excited baryons. 8.1. Systematics in baryon masses. 8.2. Quarks in a deformed oscillator potential. 8.3. Electromagnetic transitions.
Download or read book Quarks Baryons and Chiral Symmetry written by Atsushi Hosaka and published by World Scientific. This book was released on 2001 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes baryon models constructed from quarks, mesons and chiral symmetry. The role of chiral symmetry and of quark model structure with SU(6) spin-flavor symmetry are discussed in detail, starting from a pedagogic introduction. Emphasis is placed on symmetry aspects of the theories. As an application, the chiral bag model is studied for nucleon structure, where important methods of theoretical physics, mostly related to the semiclassical approach for a system of strong interactions, are demonstrated. The text is more practical than formal; tools and ideas are explained in detail while solving actual problems. By checking each step of the computations, readers can learn not only the calculational techniques but also the essential ideas behind them.
Download or read book When Topology Meets Chemistry written by Erica Flapan and published by Cambridge University Press. This book was released on 2000-07-31 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: The applications of topological techniques for understanding molecular structures have become increasingly important over the past thirty years. In this topology text, the reader will learn about knot theory, 3-dimensional manifolds, and the topology of embedded graphs, while learning the role these play in understanding molecular structures. Most of the results that are described in the text are motivated by questions asked by chemists or molecular biologists, though the results themselves often go beyond answering the original question asked. There is no specific mathematical or chemical prerequisite; all the relevant background is provided. The text is enhanced by nearly 200 illustrations and more than 100 exercises. Reading this fascinating book, undergraduate mathematics students can escape the world of pure abstract theory and enter that of real molecules, while chemists and biologists will find simple, clear but rigorous definitions of mathematical concepts they handle intuitively in their work.
Download or read book Rules for the Nomenclature of Organic Chemistry written by L. C. Cross and published by Elsevier. This book was released on 2013-09-17 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rules for the Nomenclature of Organic Chemistry: Section E: Stereochemistry (Recommendations 1974) deals with the main principles of stereochemistry. The rules discussed in this section have two main objects, namely, to prescribe, for basic views, terms that may provide a common language in all aspects of stereochemistry; and to define the ways in which these terms may be incorporated into the names of individual compounds. This book discusses the steric structure of a compound, which is denoted by an affix or affixes to the name that does not prescribe the stereochemistry. This text explains that isomers are termed stereoisomers when they differ only in the arrangement of the atoms in space. This book explains as well that the terms relative stereochemistry and relative configuration are used to describe the positions of substituents on different atoms in a molecule relative to one another. This book is a valuable resource for organic chemists.
Download or read book Molecular Symmetry written by David J. Willock and published by John Wiley & Sons. This book was released on 2009-03-16 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: Symmetry and group theory provide us with a formal method for the description of the geometry of objects by describing the patterns in their structure. In chemistry it is a powerful method that underlies many apparently disparate phenomena. Symmetry allows us to accurately describe the types of bonding that can occur between atoms or groups of atoms in molecules. It also governs the transitions that may occur between energy levels in molecular systems, which in turn allows us to predict the absorption properties of molecules and hence their spectra. Molecular Symmetry lays out the formal language used in the area using illustrative examples of particular molecules throughout. It then applies the ideas of symmetry to describe molecular structure, bonding in molecules and consider the implications in spectroscopy. Topics covered include: Symmetry elements Symmetry operations and products of operations Point groups used with molecules Point group representations, matrices and basis sets Reducible and irreducible representations Applications in vibrational spectroscopy Symmetry in chemical bonding Molecular Symmetry is designed to introduce the subject by combining symmetry with spectroscopy in a clear and accessible manner. Each chapter ends with a summary of learning points, a selection of self-test questions, and suggestions for further reading. A set of appendices includes templates for paper models which will help students understand symmetry groups. Molecular Symmetry is a must-have introduction to this fundamental topic for students of chemistry, and will also find a place on the bookshelves of postgraduates and researchers looking for a broad and modern introduction to the subject.
Download or read book Quantum Chemistry written by Ajit Thakkar and published by Morgan & Claypool Publishers. This book was released on 2017-10-03 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides non-specialists with a basic understanding ofthe underlying concepts of quantum chemistry. It is both a text for second or third-year undergraduates and a reference for researchers who need a quick introduction or refresher. All chemists and many biochemists, materials scientists, engineers, and physicists routinely user spectroscopic measurements and electronic structure computations in their work. The emphasis of Quantum Chemistry on explaining ideas rather than enumerating facts or presenting procedural details makes this an excellent foundation text/reference. The keystone is laid in the first two chapters which deal with molecular symmetry and the postulates of quantum mechanics, respectively. Symmetry is woven through the narrative of the next three chapters dealing with simple models of translational, rotational, and vibrational motion that underlie molecular spectroscopy and statistical thermodynamics. The next two chapters deal with the electronic structure of the hydrogen atom and hydrogen molecule ion, respectively. Having been armed with a basic knowledge of these prototypical systems, the reader is ready to learn, in the next chapter, the fundamental ideas used to deal with the complexities of many-electron atoms and molecules. These somewhat abstract ideas are illustrated with the venerable Huckel model of planar hydrocarbons in the penultimate chapter. The book concludes with an explanation of the bare minimum of technical choices that must be made to do meaningful electronic structure computations using quantum chemistry software packages.
