I. Spatial Arrangements of Atomic Systems and Optical Activity PDF Download
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Author: Francis Mauritius Jaeger
Publisher:
ISBN:
Category : Chemistry, Physical and theoretical
Languages : en
Pages : 494
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Book Description
Author: Francis Mauritius Jaeger
Publisher:
ISBN:
Category : Chemistry, Physical and theoretical
Languages : en
Pages : 494
Get Book Here
Book Description
Author: Francis Mauritius Jaeger
Publisher:
ISBN:
Category : Chemistry, Physical and theoretical
Languages : en
Pages : 488
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Book Description
Author: Frans Maurits Jaeger
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: S.F. Mason
Publisher: Springer Science & Business Media
ISBN: 9401576440
Category : Science
Languages : en
Pages : 375
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Book Description
For Louis Pasteur, the two distinctive properties of dissymmetric systems, optical activity and chiral discrimination, provided prime evidence for a Divine origin to the universe. Handedness appeared to be built into the macrocosm of the galaxies, each with a non-superposable mirror image by virtue of its rotation, as well as the microcosm of each molecule of most natural products. The best that the chemist in the laboratory could accomplish appeared to be the synthesis of the detordu internally-compensated meso-form and, as Pasteur ultimately came to admit, the externally-compensated racemic form. In the latter case the chemist generated not merely one but two chiral structures, although parity, and secondary symmetry generally, seemed to be conserved in the enantiomer antipode pair. The cosmic element in the Pasteur tradition received an augmentation in secular form from demonstrations of the non conservation of parity in the weak interactions, and from the discovery of net circularity in the extra-terrestrial photons, such as those from the less-distant planets, particularly the photons from the Jupiter red-spot. The development of the photoacoustic circular analysers a decade ago was received in fact with as much enthusiasm by the astronomers as by the chemists. It would be just to add, however, that the majority of these circular analysers are now to be found, not in the observatories, but in the physical and chemistry laboratories devoted to the molecular aspects of the Pasteur tradition.
Author: Aleksander Abramovich Grinberg
Publisher: Elsevier
ISBN: 1483184668
Category : Science
Languages : en
Pages : 388
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Book Description
An Introduction to the Chemistry of Complex Compounds discusses the fundamental concepts that are essential in understanding the underlying principles of complex compounds. The coverage of the book includes the compounds of the hexa, penta, and tetrammine type; compounds of the tri, dl, monoamine and hexacido types for the coordination number of 6; and complex compounds with a coordination number of 4. The text also covers the effects and chemical properties of complex compounds, such as the nature of the force of complex formation; the mutual effects of coordinated groups; and acid-base properties, oxidation-reduction properties, and solution equilibriums of complex compounds. The book will be of great use to chemists and chemical engineers.
Author: Kurt Mislow
Publisher: Courier Corporation
ISBN: 0486151158
Category : Science
Languages : en
Pages : 210
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Book Description
Molecular shape, form, and symmetry play a central role in organic chemistry, and this text presents a brief introduction to the conceptual basis of stereochemistry. Its focus lies in the fundamentals of structural stereochemistry, rather than the dynamic aspects that are more relevant to reaction mechanisms. The three-part treatment deals with structure and symmetry, stereoisomerism, and the separation and configuration of stereoisomers. The first section reviews molecular architecture, relating empirical bonding geometries to the hybridization of the central carbon atom. Students receive a nonrigorous treatment of symmetry elements and point groups, with particular focus on the presence or absence of reflection symmetry. The second section classifies stereoisomers according to symmetry properties and to the nature of their barriers; it also discusses the dependence of optical activity on structure and concludes with an examination of topological isomerism. The third and final section explores the conceptual basis of asymmetric syntheses and kinetic resolutions. Each of the major sections features a series of exercises that reinforce and extend the preceding material, and answers are provided. Preface to the Dover edition. Answers to Exercises. Bibliography. Index.
Author: R.S. Shallenberger
Publisher: Springer Science & Business Media
ISBN: 1461526663
Category : Technology & Engineering
Languages : en
Pages : 633
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Book Description
The object ofthis text is to examine, and elaborate on the meaning of the established premise that 'taste is a chemical sense.' In particular, the major effort is directed toward the degree to which chemical principles apply to phenomena associated with the inductive (recognition) phase of taste. A second objective is to describe the structure and properties of compounds with varying taste that allow decisions to be made with respect to the probable nature of the recognition chemistry for the different tastes, and the probable nature of the receptor(s) for those tastes. A final objective is to include appropriate interdisciplinary observations that have application to solving problems related to the chemical nature of taste. Taste is the most easily accessible chemical structure-biological activity relationship, and taste chemistry studies, i.e. the chemistry of sweetness, saltiness, sourness, and bitterness, have application to general biology, physiology, and pharmacology. Because it involves sensory perception, taste is also of interest to psychologists, and has application to the food and agricultural industries. The largest portion of the text is directed toward sweetness as, due to economic and other factors, the majority of the scientific studies are concerned with sweetness. The text begins with a prologue to describe the problems associated with the study of taste chemistry. Then, there is an introductory chapter to serve as an overview of the general interdisciplinary knowledge of the subject. It is followed by a chapter on the fundamental chemical principles that apply to taste induction chemistry.
Author: Scott E. Denmark
Publisher: John Wiley & Sons
ISBN: 0470147539
Category : Science
Languages : en
Pages : 332
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Book Description
Since it was first published in 1967, the highly regarded Topics in Stereochemistry series has consistently reflected the state of the art in the field and provided readers with a coherent framework for the conceptual, theoretical, and practical aspects of modern stereochemistry. With the new series editor, Scott E. Denmark, at the helm, Volume 22 continues to offer important insights into the evolution of stereochemistry and its future direction. Written by internationally recognized leaders in their respective fields, this volume introduces readers to some of the most intensely studied topics in research laboratories today. Along with the fundamental principles of chirality, the authors describe exciting new applications of stereochemistry in synthetic organic, physical organic, and bioorganic chemistry. They cover cutting-edge research in areas such as asymmetric catalysis, reactions with catalytic antibodies, and stereoelectronic control of organic reactions. In addition, a feature chapter provides a critical analysis of the concepts of molecular chirality. Timely and authoritative, Topics in Stereochemistry, Volume 22, features over 120 illustrations and a cumulative index covering Volumes 1 through 22. It is an essential resource for organic chemists involved in synthesis as well as those in the physical and bioorganic areas of organic chemistry. Volume 22 relaunches this highly respected series, providing a timely, valuable reference to the theory and practice of stereochemistry. Cutting-edge topics include: * Foundations of molecular and topological chirality. * Stereoselective reactions with catalytic antibodies. * Stereoelectronic effects of the group 4 metal substituents in organic chemistry. * Asymmetric catalysis with the new class of chiral lanthanoid complexes. * Basic principles of the exciting new area of asymmetric amplification.
Author: Peter J. Ramberg
Publisher: Routledge
ISBN: 1351952455
Category : History
Languages : en
Pages : 394
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Book Description
Offering a comprehensive narrative of the early history of stereochemistry, Dr Ramberg explores the reasons for and the consequences of the fundamental change in the meaning of chemical formulas with the emergence of stereochemistry during the last quarter of the nineteenth century. As yet relatively unexplored by historians, the development of stereochemistry - the study of the three-dimensional properties of molecules - provides a superb case study for exploring the meaning and purpose of chemical formulas, as it entailed a significant change in the meaning of chemical formulas from the purely chemical conception of 'structure' to the physico-chemical conception of molecules provided by the tetrahedral carbon atom. This study is the first to treat the emergence of the unique visual language of organic chemistry between 1830 and 1874 to place in context the near simultaneous proposal of the tetrahedral carbon atom by J.H. van 't Hoff and J.A. Le Bel in 1874. Dr Ramberg then examines the research programs in stereochemistry by Johannes Wislicenus, Arthur Hantzsch, Victor Meyer, Carl Bischoff, Emil Fischer and Alfred Werner, showing how the emergence of stereochemistry was a logical continuation of established research traditions in chemistry. In so doing, he also illustrates the novel and controversial characteristics of stereochemical ideas, especially the unprecedented use of mechanistic and dynamic principles in chemical explanation.
Author: Nina Berova
Publisher: John Wiley & Sons
ISBN: 1118120388
Category : Science
Languages : en
Pages : 884
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Book Description
This book provides an introduction to the important methods of chiroptical spectroscopy in general, and circular dichroism (CD) in particular, which are increasingly important in all areas of chemistry, biochemistry, and structural biology. The book can be used as a text for undergraduate and graduate students and as a reference for researchers in academia and industry. Experimental methods and instrumentation are described with topics ranging from the most widely used methods (electronic and vibrational CD) to frontier areas such as nonlinear spectroscopy and photoelectron CD, as well as the theory of chiroptical methods and techniques for simulating chiroptical properties. Applications of chiroptical spectroscopy to problems in organic stereochemistry, inorganic stereochemistry, and biochemistry and structural biology are also discussed, and each chapter is written by one or more leading authorities with extensive experience in the field.
