Download or read book Carbene Chemistry written by Guy Bertrand and published by CRC Press. This book was released on 2002-05-14 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlights recent discoveries in the development of rapid kinetic techniques that allow for direct visualization and state-of-the-art computational methods.
Download or read book Advances in Carbene Chemistry Volume 3 written by U.H. Brinker and published by Elsevier. This book was released on 2001-10-24 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our understanding of carbene chemistry has advanced dramatically, especially in the last decade, and new developments continue to emerge. Some of the recent exciting findings have been collected in the first and second volumes of Advances in Carbene Chemistry. With the third volume, the series continues to provide a periodic coverage of carbene chemistry in its broadest sense. Beginning as chemical curiosities, carbenes are now solidly established as reactive intermediates with fascinating and productive research areas of their own. Five decades of divalent carbon chemistry have provided us with a vast repertoire of new, unusual, and surprising reactions. Some of those reactions, once classified as exotic, have become standard methods in organic synthesis. These highly reactive carbene species have been harnessed and put to work to achieve difficult synthetic tasks other reactive intermediates cannot easily perform. The fruitful relationship between experiment and theory has pushed carbene chemistry further toward the direction of reaction control; that is, regio- and stereoselectivity in intra- and intermolecular addition and insertion reactions. The interplay between experiment and modern spectroscopy has led to the characterization of many carbenes that are crucial to both an understanding and further development of this field.
Download or read book Kinetics and Spectroscopy of Carbenes and Biradicals written by M.S. Platz and published by Springer Science & Business Media. This book was released on 2013-12-14 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of mechanistic organic chemistry is filled with claims of short-lived reactive intermediates connecting starting material to product. In many ways this book represents a personal odyssey of the editor in this area of chemistry. I well remember my introduction to organic chemistry as an undergraduate working in the laboratories of Shelton Bank at SUNY Albany in the early 1970s, and the excitement and frustration attending the piecing together of the details of a reaction mechanism by working backwards from the stable products of the reaction. In those days the reaction and the reactive intermediates flew by too rapidly to permit direct observation. Thus it came as something of a revelation to me as a graduate student at Yale that it was possible to slow down a reaction and actually "see" such ephemeral species as carbenes and biradicals by spectroscopic methods, by generating them photochemically at cryogenic temperatures. In this monograph several chap ters are devoted to low-temperature studies. Dougherty has described the matrix EPR spectra of biradicals, which were pure conjecture only ten years ago. Michl and Arnold have described the matrix spectroscopy of cyciobutadiene, a molecule that has fascinated organic chemists for over a hundred years. They have shown that by using a combination of matrix spec troscopic methods it is possible to learn nearly as much about the structure of cyciobutadiene, the prototypical antiaromatic biradicaloid, as about that of a common shelf-stable reagent.
Download or read book Rearrangements in Ground and Excited States written by Paul de Mayo and published by Academic Press. This book was released on 2013-10-22 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rearrangement in ground and excited states, Volume 1 covers essays on the rearrangements of carbocations; gas-phase ion rearrangements; and rearrangements of carbenes and nitrenes. The book also includes essays on the free-radical rearrangements; hypothetical biradical pathways in thermal unimolecular rearrangements; and rearrangements in carbanions. Chemists and people involved in the study of rearrangements will find the book invaluable.
Download or read book Chemical Kinetics written by Luis Arnaut and published by Elsevier. This book was released on 2021-06-22 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical Kinetics: From Molecular Structure to Chemical Reactivity, Second Edition, explains how molecular structures change with time. It offers a comprehensive and coherent coverage of the rates of chemical transformations. The book is written for both undergraduate chemistry students, and for the specialist. The newcomer will find the fundamental concepts, the simple experiments, and the underlying theories. For the seasoned specialist, it presents sophisticated experimental and theoretical methods, offering a panorama of time-dependent molecular phenomena connected by a new rationale. The gap between the two is bridged by a logical path that leads the reader from a phenomenological approach of molecular changes, to the formalism of chemical reaction rates, and then to state-of-the-art calculations of rate constants of the most prevalent reactions: atom transfers, catalysis, proton transfers, substitution reactions, energy transfers and electron transfers. In the process, the reader is presented with the details of collision and transition state theories. The coverage includes unimolecular reactions in the gas phase, reactions in solution and reactions on surfaces. - All first edition chapters were revised and most were extended - Features two new chapters, one on Pharmacokinetics and the other on Oscillatory Reactions and Chaos - Includes practical examples, detailed theoretical calculations, and cross-relations between reactions throughout the text to underscore key concepts - The rigor of mathematical description of phenomena is combined with simple and profusely-illustrated concepts - Provides a state-of-the-art presentation on the kinetics of reactions implicated in the most active research fields
Download or read book Photobiology in Medicine written by Giulo Jori and published by Springer Science & Business Media. This book was released on 2013-12-11 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Man has recognised an association of light with life and medicine for over 3000 years. Today the major challenges to this topic include the elucidation of photochemical reactions involved in photobiology at the molecular level. This includes the use of a variety of modem probing techniques that directly measures the reactivity of excited states and free radicals involved in biological reactions. This text-book is based on such an approach and has arisen from some of the lectures delivered at the NATO ASI held at Hotel Capo Caccia near the Centre for Advanced Research in Photobiology (CARP) in Sardegia, Italy. The ASI took place from 30 September -13 October 1993 and involved a total membership of 90. The book, like the NATO ASI itself, is divided into four themes starting with fundamental aspects and ending with complex medically related systems. Thus Theme 1 covers aspects of the underlying photophysics and photochemistry with particular emphasis on modem experimental techniques to study molecular mechanisms of biological processes. Theme 2 applies many of these fundamental studies to the chemical reactions of most relevance to photobiology and photomedicine such as photo-addition, -isomerization, -sensitization and -pigmentation. The third and fourth Themes deal with the deleterious and therapeutic aspects of light with particular emphasis on the use of Photo-Dynamic Therapy (PDT) to treat cancer and on viral and micro bioi infections.
Download or read book Reviews of Reactive Intermediate Chemistry written by Matthew S. Platz and published by John Wiley & Sons. This book was released on 2007-04-20 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemistry of reactive intermediates is central to a modern mechanistic and quantitative understanding of organic chemistry. Moreover, it underlies a significant portion of modern synthetic chemistry and is integral to a molecular view of biological chemistry. Reviews in Reactive Intermediate Chemistry presents an up-to-date, authoritative guide to this fundamental topic. Although it follows Reactive Intermediate Chemistry by the same authors, it serves as a free-standing resource for the entire chemical and biochemical community. The book includes: Relevant, practical applications Coverage of such topics as mass spectrometry methods, reactive intermediates in interstellar medium, quantum mechanical tunnelling, solvent effects, reactive intermediates in biochemical processes, and excited state surfaces Discussions of emerging areas, particularly those involving dynamics and theories Concluding sections identifying key directions for future research are provided at the end of each chapter
Download or read book Biradicals Radicals in Excited States Carbenes and Reladte Species written by and published by Springer. This book was released on 1998-06-08 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Free radicals, which are key intermediates in many thermal, photochemical and radiation processes, are important for a proper understanding of fundamental natural processes and the successful development of organic syntheses. Volume II/18 serves as supplement and extension to Volume II/13 and covers rate constants and other kinetic data of free radical reactions in liquids. II/18 contains new chapters on reactions of radicals in excited states and of carbenes, nitrenes and analogues. Species in aqueous solutions for which other compilations are available were deliberately omitted as before, and for the same reason electron transfer equilibria of organic radicals were not covered. II/18E2 contains reaction rate data on biradicals, radicals in excited states, and carbenes and related species. Contains CD-ROM.
Download or read book Zahlenwerte und Funktionen aus Naturwissenschaften und Technik written by K. H. Hellwege and published by . This book was released on 1961 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report for Fiscal Year written by National Science Foundation (U.S.) and published by . This book was released on 1978 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Photochemistry written by David H. Volman and published by John Wiley & Sons. This book was released on 2009-09-24 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Setting the pace for progress and innovation . . . "[Provides] a wealth of information on frontier photochemistry . . . could easily serve as a definitive source of background information for future researchers." —Journal of the American Chemical Society "The overall quality of the series and the timeliness of selections and authors warrants continuation of the series by any library wishing to maintain a first-rate reference series to the literature." —Physics Today ADVANCES IN PHOTOCHEMISTRY More than a simple survey of the current literature, Advances in Photochemistry offers critical evaluations written by internationally recognized experts. These pioneering scientists offer unique and varied points of view of the existing data. Their articles are challenging as well as provocative and are intended to stimulate discussion, promote further research, and encourage new developments in the field.
Download or read book International Books in Print written by and published by . This book was released on 1998 with total page 1332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photochemistry written by A. Gilbert and published by Royal Society of Chemistry. This book was released on 1995 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: The breadth of scientific and technological interests in the general topic of photochemistry is truly enormous and includes, for example, such diverse areas as microelectronics, atmospheric chemistry, organic synthesis, non-conventional photoimaging, photosynthesis, solar energy conversion, polymer technologies, and spectroscopy. This Specialist Periodical Report on Photochemistry aims to provide an annual review of photo-induced processes that have relevance to the above wide-ranging academic and commercial disciplines, and interests in chemistry, physics, biology and technology. In order to provide easy access to this vast and varied literature, each volume of Photochemistry comprises sections concerned with photophysical processes in condensed phases, organic aspects which are sub-divided by chromophore type, polymer photochemistry, and photochemical aspects of solar energy conversion. Volume 34 covers literature published from July 2001 to June 2002. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading authorities in the relevant subject areas, the series creates a unique service for the active research chemist, with regular, in-depth accounts of progress in particular fields of chemistry. Subject coverage within different volumes of a given title is similar and publication is on an annual or biennial basis.
Download or read book Free Radicals in Organic Chemistry written by Jacques Fossey and published by . This book was released on 1995-11-09 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Free radicals constitute the most frequently used class of reaction intermediates in organic chemistry. This study describes the structure and reactivity of free radicals, and explores their role in both natural phenomena and in the design of new reaction pathways.
Download or read book Physical Methods of Chemistry Determination of electronic and optical properties written by Bryant W. Rossiter and published by . This book was released on 1986 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photochemistry written by D Bryce-Smith and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: The breadth of scientific and technological interests in the general topic of photochemistry is truly enormous and includes, for example, such diverse areas as microelectronics, atmospheric chemistry, organic synthesis, non-conventional photoimaging, photosynthesis, solar energy conversion, polymer technologies, and spectroscopy. This Specialist Periodical Report on Photochemistry aims to provide an annual review of photo-induced processes that have relevance to the above wide-ranging academic and commercial disciplines, and interests in chemistry, physics, biology and technology. In order to provide easy access to this vast and varied literature, each volume of Photochemistry comprises sections concerned with photophysical processes in condensed phases, organic aspects which are sub-divided by chromophore type, polymer photochemistry, and photochemical aspects of solar energy conversion. Volume 34 covers literature published from July 2001 to June 2002. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading authorities in the relevant subject areas, the series creates a unique service for the active research chemist, with regular, in-depth accounts of progress in particular fields of chemistry. Subject coverage within different volumes of a given title is similar and publication is on an annual or biennial basis.
Download or read book Diradicaloids written by Jishan Wu and published by CRC Press. This book was released on 2022-04-01 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: π-Conjugated molecules with an even number of π-electrons usually have a closed-shell ground state. However, recent studies have demonstrated that a certain type of molecules could show open-shell singlet ground state and display diradical-like (diradicaloid) behavior. Their electronic structure can be understood in terms of the “diradical character” and “aromaticity” concepts. They display very different electronic properties from traditional closed-shell π-conjugated molecules and could be used as next-generation molecular materials. This book provides a comprehensive review on the chemistry, physics, and material applications of open-shell singlet diradicaloids. Particularly, it elaborates the fundamental structure–diradical character–electronic property relationships both theoretically and experimentally. The book has been written by leading scientists in the field from Japan, Germany, Spain, Italy, China, and Singapore.
