Download or read book Electronic Absorption Spectra and Geometry of Organic Molecules written by Hiroshi Suzuki and published by Elsevier. This book was released on 2012-12-02 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electronic Absorption Spectra and Geometry of Organic Molecules: An Application of Molecular Orbital Theory focuses on electronic absorption spectra of organic compounds and molecules. The book begins with the discussions on molecular spectra, electronic absorption spectra of organic compounds, and practical measures of absorption intensity. The text also focuses on molecular orbital theory and group theory. Molecular state functions; fundamental postulates of quantum theory; representation of symmetry groups; and symmetry operations and symmetry groups are described. The book also discusses shape of absorption bands and geometry of excited electronic states; effect of environment on electronic absorption spectra; and the application of simple LCAO MO method to simple p systems. An evaluation of the parameters used in simple LCAO MO method is presented. The text notes the usefulness and restrictions of simple LCAO MO method in the interpretation of electronic absorption spectra. The correlation between results of simple MO calculation and spectral data in aromatic hydrocarbons, and correlation between results of simple MO calculation and spectral data in conjugated linear polyenes are discussed. The book also looks at MO methods and the relations between electronic absorption spectra and geometry of molecules, biphenyl, styrene, and related compounds. The text is a good source of data for researchers and chemistry students who want to study electronic absorption spectra.
Download or read book National Library of Medicine Current Catalog written by National Library of Medicine (U.S.) and published by . This book was released on 1971 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: First multi-year cumulation covers six years: 1965-70.
Download or read book Information Sources in Chemistry written by R. T. Bottle and published by Walter de Gruyter. This book was released on 2011-12-01 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of each volume of this series Guides to Information Sources is to reduce the time which needs to be spent on patient searching and to recommend the best starting point and sources most likely to yield the desired information. The criteria for selection provide a way into a subject to those new to the field and assists in identifying major new or possibly unexplored sources to those who already have some acquaintance with it. The series attempts to achieve evaluation through a careful selection of sources and through the comments provided on those sources.
Download or read book Polyynes written by Franco Cataldo and published by CRC Press. This book was released on 2005-08-29 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polyynes: Synthesis, Properties, and Applications compiles information found scattered throughout the literature in inorganic, organic, and polymer chemistry into one cohesive volume. In addition to being a precursor of fullerenes, polyynes are one of the key precursors in the formation of soot and carbon dust, or elemental carbon in the gal
Download or read book Topics In Organic Polarography written by P. Zuman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: Even though the nwnber of requests for reprints and the number of quotations in the Science Citation Index has indicated an ever-increasing interest in topics of organic polarography, I have often felt that the reason that some work is less known may well be because the papers were published in less accessible journals. Therefore, I was pleased when I was asked to prepare a selection of my papers on organic polarography for reprinting. This collection of papers may indicate some of the possibilities offered by polarography in the study of properties of organic compounds. The fact that the papers are published in one volume, not only makes the information more easily accessible for the reader, but also enables a direct comparison of related topics. The mode of selection is discussed in the Introduction. The papers reprinted in this volume are mostly based on work carried out in the J. Heyrovsky Institute of Polarography of the Czechoslovak Academy of Sciences in Prague, in cooperation with my co-workers. I would like to take this opportunity of thanking all of them for the pleasure I got from this cooperation on the solution of varying problems of organic electrochemistry .
Download or read book Polyphenyls written by Edward H. Smith and published by . This book was released on 1956 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Derivative Spectrophotometry and PAM Fluorescence in Comparative Biochemistry written by Vladimir S. Saakov and published by Springer. This book was released on 2015-12-09 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents various examples of how advanced fluorescence and spectroscopic analytical methods can be used in combination with computer data processing to address different biochemical questions. The main focus is on evolutionary biochemistry and the description of biochemical and metabolic issues; specifically, the use of pulse amplitude modulated fluorescence (PAM) for the functional analysis of the cellular state, as well as results obtained by means of the derivative spectroscopy method characterizing structural reorganization of a cell under the influence of external factors, are discussed. The topics presented here will be of interest to biologists, geneticists, biophysicists and biochemists, as well as experts in analytical chemistry, pharmaceutical chemistry and radio chemistry and radio activation studies with protonen and alpha-particles. It also offers a valuable resource for advanced undergraduate and graduate students in biological, physical and chemical disciplines whose work involves derivative spectrophotometry and PAM-fluorescence.
Download or read book UV VIS Spectroscopy and Its Applications written by Heinz-Helmut Perkampus and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: UV-VIS spectroscopy is one of the oldest methods in molecular spectroscopy. The definitive formulation of the Bouguer-Lambert Beer law in 1852 created the basis for the quantitative evaluation of absorption measurements at an early date. This led firstly to colorimetry, then to photometry and finally to spectrophotometry. This evolution ran parallel with the development of detectors for measuring light intensities, i.e. from the human eye via the photo element and photocell, to the photomultiplier and from the photo graphic plate to the present silicon-diode detector both of which allow simultaneous measurement of the complete spectrum. With the development of quantum chemistry, increasing atten tion was paid to the correlation between light absorption and the structure of matter with the result that in recent decades a number of excellent discussions of the theory of electronic spectroscopy (UV-VIS and luminescence sp,~ctroscopy) have been published. Consequently, this extremely ivteresting aspect of molecular spec troscopy has dominated the teaching of the subject both in my own lectures and those of others. However, it is often overlooked that, in addition to the theory, applications of spectroscopic methods are of particular interest to scientists. For this reason, a lecture series about electronic spectroscopy given in the Institute for Physical Chemistry at the Heinrich-Heine-University in Dusseldorf was supplemented by one about "UV-VIS spectroscopy and its applications". This formed the basis of the present book.
Download or read book Physical Methods in Heterocyclic Chemistry V3 written by A Katritzky and published by Elsevier. This book was released on 2012-12-02 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physical Methods in Heterocyclic Chemistry, Volume III provides information pertinent to ionization constants and ultraviolet spectra. This book discusses the methods for the prediction of ionization constants. Comprised of seven chapters, this volume starts with an overview of the ionization constants of a number of heterocyclic compounds. This text then describes the procedures that are usually followed when molecular structure determinations based on electron diffraction measurements are carried out. Other chapters consider the concept of group frequencies, which rests upon the experimental fact that certain groups of atom give rise to vibrational transitions which are close or at the same frequency irrespective of the particular molecule in which the group occurs. The final chapter deals with the optical rotatory power, which is the only generally accessible physical property by which enantiomers can be distinguished in isolation. Heterocyclic chemists, biochemists, molecular biologists, and researchers will find this book extremely useful.
Download or read book Applications of NMR Spectroscopy Volume 2 written by Atta-ur Rahman and published by Elsevier. This book was released on 2015-12-10 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applications of NMR Spectroscopy, Volume 2, originally published by Bentham and now distributed by Elsevier, presents the latest developments in the field of NMR spectroscopy, including the analysis of plant polyphenols, the role of NMR spectroscopy in neuroradiology, NMR–based sensors, studies on protein and nucleic acid structure and function, and mathematical formations for NMR spectroscopy in structural biology. The fully illustrated chapters contain comprehensive references to the recent literature. The applications presented cover a wide range of the field, such as drug development, medical imaging and diagnostics, food science, mining, petrochemical, process control, materials science, and chemical engineering, making this resource a multi-disciplinary reference with broad applications. The content is ideal for readers who are seeking reviews and updates, as it consolidates scientific articles of a diverse nature into a single volume. Sections are organized based on disciplines, such as food science and medical diagnostics. Each chapter is written by eminent experts in the field. - Consolidates the latest developments in NMR spectroscopy into a single volume - Authored and edited by world-leading experts in spectroscopy - Features comprehensive references to the most recent related literature - More than 65 illustrations aid in the retention of key concepts
Download or read book The Organic Chemistry of Museum Objects written by Stephen G Rees-Jones and published by Elsevier. This book was released on 1987-02-24 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Organic Chemistry of Museum Objects provides an account of the composition, chemistry, and analysis of the organic materials which enter into the structures of objects in museum collections. This book is not intended to duplicate the information available in existing handbooks on the materials and techniques of art and conservation but rather to convey the state of knowledge of the chemical composition of such materials and so provide a framework for a general understanding of their properties. The book begins with a review of basic organic chemistry, covering hydrocarbons and compounds with functional groups. It then describes spectrometry and separation methods. This is followed by discussions of the chemistry and composition of oils and fats, natural waxes, bituminous materials, carbohydrates, proteins, and natural resins and lacquers. Subsequent chapters deal with synthetic materials, i.e., high molecular weight polymers of a wholly synthetic nature; and natural and synthetic dyestuffs. Also discussed are the deterioration and other changes in organic materials resulting from both free radical and ionic reactions; and the application of analytical methods to identify the organic materials of actual museum objects. This book is intended for both chemists and nonchemists.
Download or read book Ultraviolet Visible Spectrophotometry in Pharmaceutical Analysis written by S. Gorog and published by CRC Press. This book was released on 2018-01-10 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of the state of the art in pharmaceutical applications of UV-VIS spectroscopy. This book presents the fundamentals for the beginner and, for the expert, discusses both qualitative and quantitative analysis problems. Several chapters focus on the determination of drugs in various matrices, the coupling of chromatographic and spectrophotometric methods, and the problems associated with the use of chemical reactions prior to spectrophotometric measurements. The final chapter provides a survey of the spectrophotometric determination of the main families of drugs, emphasizing the achievements of the last decade.
Download or read book The Chemistry of PCB S written by Otto Hutzinger and published by CRC Press. This book was released on 2018-05-04 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: The literature on chlorinated biphenyl is growing rapidly. Review articles on PCB's cited in this book usually contained a section on the toxicity of PCB. The structure and nomenclature are detailed. The chapters and topics included are (1) commercial PCB preparations: properties and compositions, (2) synthesis of chlorobiphenyls, (3) chemical reactions of chlorobiphenyls, (4) photodegradation of chlorobiphenyls, (5) metabolism of chlorobiphenyls, (5) mass spectroscopy of chlorobiphenyls, (6) nuclear magnetic resonance of chlorobiphenyls, (7) ultraviolet spectroscopy of chlorobiphenyls, (8) infrared spectrometry of chlorobiphenyls, (9) determination of chlorobiphenyls, and (10) recent developments.
Download or read book Laboratory Practice of Organic Chemistry written by Thomas Lloyd Jacobs and published by . This book was released on 1974 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of General Chemistry of the U S S R in English Translation written by and published by . This book was released on 1986 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index to Reviews Symposia Volumes and Monographs in Organic Chemistry written by Norman Kharasch and published by Elsevier. This book was released on 2013-10-22 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: Index to Reviews, Symposia Volumes and Monographs in Organic Chemistry for the Period 1940-1960 presents a resume of published monographs, reviews, and symposia lectures in organic chemistry. The editors adopted the plan of listings by symposia volume or journal, backed up by the total subject and author indexes. In this way the user can readily locate a particular article through the author index or the subject index; or should he recall that an article appeared in a particular source, the chronological listing in that source can be scanned quickly. The Index gives a convenient overview of the accomplishments of organic chemists during this very prolific period of the growth of the field. Frequently, several articles on the same or similar subject appear, hence the historical perspective can be sensed by rapid evaluation of the reviews selected. This Index will be useful to research workers, teachers and students. It will also assist editors and authors to select specific areas which require critical review.
Download or read book Absorption Spectroscopy of Organic Molecules written by V. M. Parikh and published by Reading, Mass. : Addison-Wesley Publishing Company. This book was released on 1974 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
