Download or read book Aromaticity written by Israel Fernandez and published by Elsevier. This book was released on 2021-05-16 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluating the aromaticity of a molecular system and the influence of this concept on its properties is a crucial step in the development of novel aromatic systems. Modern computational methods can provide researchers with a high level of insight into such aromaticity, but identifying the most appropriate method for assessing a specific system can prove difficult. Aromaticity: Modern Computational Methods and Applications reviews the latest state-of-the-art computational methods in this field and discusses their applicability for evaluating the aromaticity of a system. In addition to covering aromaticity for typical organic molecules, this volume also explores systems possessing transition metals in their structures, macrocycles and even transition structures. The influence of the aromaticity on the properties of these species (including the structure, magnetic properties and reactivity) is highlighted, along with potential applications in fields including materials science and medicinal chemistry. Finally, the controversial and fuzzy nature of aromaticity as a concept is discussed, providing the basis for an updated and more comprehensive definition of this concept. Drawing on the knowledge of an international team of experts, Aromaticity: Modern Computational Methods and Applications is a unique guide for anyone researching, studying or applying principles of aromaticity in their work, from computational and organic chemists to pharmaceutical and materials scientists. Reviews a range of computational methods to assess the aromatic nature of different compounds, helping readers select the most useful tool for the system they are studying Presents a complete guide to the key concepts and fundamental principles of aromaticity Provides guidance on identifying which variables should be modified to tune the properties of an aromatic system for different potential applications
Download or read book Aromatic Chemistry written by Malcolm Sainsbury and published by . This book was released on 1992-08-27 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: All the basic principles of this important topic are clearly presented here in an account which takes as examples many compounds of industrial and biological significance. Consideration is given to the structure, reactions, and properties of benzene and classes of aromatic compounds derived from it, and topics such as thermodynamic versus kinetic control and pericyclic reactions are introduced. The text also covers polycyclic arenes and the small and large ring systems which are embraced by the wider definition of aromaticity.
Download or read book Industrial Aromatic Chemistry written by Heinz-Gerhard Franck and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aromatic organic hydrocarbons and heterocycles represent a bulk of about one third of all industrially produced organic basic materials. Aromatic compounds such as benzene, phenol, naphthalene, anthracene, and their homologues, are derived from raw materials, coal, crude oil and biogenic resources by thermal and catalytic refining processes. This book introduces the chemistry of aromatics with a brief discussion of the aromatic character and a survey of historical aspects, particularly the development of the organic dye industry during the 19th century. The main emphasis of the book is to give a clear prospect of industrial processes for the production and the derivatisation of aromatics with consistent flow diagrams. Economical aspects of by- and side-products are especially regarded. For the most important aromatics an analysis of the international market included their derivatives: polymers, pesticides, dyes, pigments and drugs. Professional scientists, managers and students in chemistry and chemical engineering will find a wealth of information for their career and daily work.
Download or read book Fundamental Aliphatic Chemistry written by P. W. G. Smith and published by Elsevier. This book was released on 2014-04-24 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Chemistry for General Degree Students is written to meet the requirements of the London General Internal examination and degree examinations of a similar standing. It will also provide for the needs of students taking the Part 1 examination for Graduate Membership of the Royal Institute of Chemistry, or the Higher National Certificate, whilst the treatment is such that Ordinary National Certificate courses can be based on the first two volumes Within the limits broadly defined by the syllabus, the aim of this first volume is to provide a concise summary of the important general methods of preparation and properties of the main classes of aliphatic compounds. Due attention is paid to practical considerations with particular reference to important industrial processes. At the same time, the fundamental theoretical principles of organic chemistry are illustrated by the discussion of a selection of the more important reaction mechanisms. Questions and problems are included, designed to test the student's appreciation of the subject and his ability to apply the principles embodied therein. A selection of questions set in the relevant examinations is also included.
Download or read book Aromaticity and Other Conjugation Effects written by Rolf Gleiter and published by John Wiley & Sons. This book was released on 2012-09-24 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors provide an excellent overview of conjugation effects in organic chemistry within and between Pi systems. Besides various aspects of aromaticity one finds detailed discussions of homo-, spiroand hyperconjugation as well as effects of through-space and throughbond interactions. These effects are presented on the basis of experimental results and are analyzed by the use of qualitative arguments of perturbation theory and from a comparison with results from high level ab initio calculations. This book is a must-have for bachelor students from the second year on, master and PhD students of chemistry. Also students in science such as physics, biology and medicine will benefit from the concepts described in the book. Furthermore, chemists in research and development will be grateful to find here an overview of conjugation effects allowing to understand the structures, the dynamics and the reactivity of molecules.
Download or read book Aromatic Organic Chemistry written by Amit Arora and published by Discovery Publishing House. This book was released on 2006 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written for B.Sc. (Hons.) and M.Sc. students of various universities. In this book my aim has been describe the fundamental principles of organic chemistry. Since I do not consider the chemistry of natural products to be fundamental chemistry but rather the application of fundamental principles. The subject matter described in this book covers much of the basic organic chemistry that is needed by a student who which to study chemistry as a main subject at degree level. The arrangement of the subject-matter is based on homologous series and in general, descriptions of reactions are followed by discussion of their mechanisms and these includes an elementary account of the sort of evidence that led workers to suggest mechanisms that are acceptable at the present time.
Download or read book Aromaticity written by Peter J. Garratt and published by Wiley-Interscience. This book was released on 1986-04-25 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examines aromaticity through the historical and conceptual framework of simple molecular orbital theory. This approach is unique in that theoretical considerations are integrated with experimental observations. The criteria for aromatic, antiaromatic and nonaromatic compounds are discussed in with reference to benzene, cyclobutadiene and cyclooctatetraene. Also includes a chapter on the likely classes of aromatic compounds.
Download or read book Aromaticity and Antiaromaticity written by Miquel Solà and published by John Wiley & Sons. This book was released on 2022-10-14 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aromaticity and Antiaromaticity A comprehensive review of the science of aromaticity, as well as its evolution, from benzene to atomic clusters In Aromaticity and Antiaromaticity: Concepts and Applications, a team of accomplished chemists delivers a comprehensive exploration of the evolution and critical aspects of aromaticity. The book examines the new global criteria used to evaluate aromaticity, including the Nucleus Independent Chemical Shift (NICS) index and the electronic indices based on electronic properties. Additional discussions of inorganic aromatic compounds developed in this century, which give rise to new concepts like multifold aromaticity, are included. Three-dimensional aromaticity found in fullerenes and nanotubes, Möbius aromaticity present in some annulenes, and excited state aromaticity are explored as well. This volume explores the geometrical, electronic, magnetic, and thermodynamic characteristics of aromatic and antiaromatic compounds and their reactivity properties. It also provides: A thorough historical overview of aromaticity, as well as simple electronic and structural models Comprehensive explorations of organic and inorganic aromatic compounds, concepts of stability and reactivity, and geometric, energetic, magnetic, and electronic criteria of descriptors of aromaticity Practical discussions of heteroaromaticity, as well as Möbius aromaticity and excited state aromaticity In-depth examinations of sigma, pi, delta, and phi aromaticity Perfect for graduate students, researchers, and academics interested in aromaticity, organometallic chemistry, and computational chemistry, Aromaticity and Antiaromaticity: Concepts and Applications will also earn a place in the libraries of professionals and researchers working in organic, inorganic, and physical chemistry.
Download or read book Aromatic Chemistry written by John D. Hepworth and published by Royal Society of Chemistry. This book was released on 2002 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides material required by undergraduate students and is also ideal for industrial chemists seeking to update their knowledge of this important aspect of chemistry.
Download or read book Aromaticity and Antiaromaticity written by Vladimir I. Minkin and published by Wiley-Interscience. This book was released on 1994-04-14 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designed to assist chemists in integrating the results of calculations on molecules and ions into their general body of chemical knowledge. Contains recent contributions from theoretical and computational chemistry to the development of the concept of aromaticity (antiaromaticity) and its expansion into new areas such as organometallic and cluster compounds and three-dimensional structures. Updates the modern status of aromaticity and covers basic principles and experimental applications.
Download or read book Aromaticity in Heterocyclic Compounds written by Tadeusz Marek Krygowski and published by Springer Science & Business Media. This book was released on 2009-01-30 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterocyclic chemistry is the biggest branch of chemistry covering two-thirds of the chemical literature. Aromaticity in Heterocyclic Compounds covers hot topics of frontier research summarized by reputed scientists in the field.
Download or read book Arene Chemistry written by Jacques Mortier and published by John Wiley & Sons. This book was released on 2015-12-14 with total page 987 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organized to enable students and synthetic chemists to understand and expand on aromatic reactions covered in foundation courses, the book offers a thorough and accessible mechanistic explanation of aromatic reactions involving arene compounds. • Surveys methods used for preparing arene compounds and their transformations • Connects reactivity and methodology with mechanism • Helps readers apply aromatic reactions in a practical context by designing syntheses • Provides essential information about techniques used to determine reaction mechanisms
Download or read book Aromaticity and Metal Clusters written by Pratim Kumar Chattaraj and published by CRC Press. This book was released on 2010-10-15 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal clusters, an intermediate state between molecules and the extended solid, show peculiar bonding and reactivity patterns. Their significance is critical to many areas, including air pollution, interstellar matter, clay minerals, photography, catalysis, quantum dots, and virus crystals. In Aromaticity and Metal Clusters, dozens of international experts explore not only the basic aspects of aromaticity, but also the structures, properties, reactivity, stability, and other consequences of the aromaticity of a variety of metal clusters. Although the concept of aromaticity has been known for nearly two centuries, there is no way to measure it experimentally and no theoretical formula to calculate it. In order to gain insight into its exact nature, the authors of this volume examine various indirect characteristics such as geometrical, electronic, magnetic, thermodynamic, and reactivity considerations. The book begins by discussing the evolution of aromaticity from benzene to atomic clusters. Next, more specialized chapters focus on areas of significant interest. Topics discussed include: Computational studies on molecules with unusual aromaticity Electronic shells and magnetism in small metal clusters A density functional investigation on the structures, energetics, and properties of sodium clusters through electrostatic guidelines and molecular tailoring The correlation between electron delocalization and ring currents in all metallic aromatic compounds Phenomenological shell model and aromaticity in metal clusters Rationalizing the aromaticity indexes used to describe the aromatic behavior of metal clusters 5f orbital successive aromatic and antiaromatic zones in triangular uranium cluster chemistry This collection of diverse contributions, composed of the work of scientists worldwide, is destined to not only answer puzzling questions about the nature of aromaticity, but also to provoke further inquiry in the minds of researchers.
Download or read book Aromatic Chemistry written by P.W.G. Smith and published by Elsevier. This book was released on 2016-06-27 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Chemistry for General Degree Students, Volume 2: Aromatic Chemistry presents the fundamental aspects of aromatic chemistry. This book explores the systematic study in the first instance of the chemistry of functional groups, based on their structural characteristics in aliphatic systems. Organized into 11 chapters, this volume begins with an overview of the properties of the aromatic nucleus followed by a consideration of the manner in which interaction with the aromatic system may alter the reactivity of functional groups. Other chapters explain the two distinctly different classes of aromatic halogen compounds. This text discusses as well the properties of an aromatic amine, which is characterized by having at least one aromatic system attached to the nitrogen atom and may be further categorized as primary, secondary, or tertiary according to the degree of substitution of the nitrogen. The final chapter examines the classical structure for thiophen. This book is a valuable resource for organic chemists and students.
Download or read book Synthesis of Aromatic Compounds written by Kenneth E. Maly and published by Walter de Gruyter GmbH & Co KG. This book was released on 2022-07-05 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aromatic compounds are a diverse and fascinating class of compounds with wide-ranging importance. This book provides an overview of the synthesis and reactivity of aromatic compounds. The publication covers the many important reaction types, such as electrophilic and nucleophilic substitution, the reactivity of benzynes, aryllithium chemistry, and transition metal-mediated reactions. It also includes a discussion of the synthesis of heteroaromatic compounds, polycyclic aromatic compounds, and nonplanar aromatic systems. This book focusses on reaction mechanisms and numerous examples of applications in multistep synthesis of aromatic compounds.
Download or read book Aromatic Character and Aromaticity written by G. M. Badger and published by Cambridge University Press. This book was released on 1969-01-02 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally published in 1969, this book analyses the special properties of benzene and its derivatives, which give them their distinct aromatic character. The text first discusses the structure of benzene, including the light shed on it by physical methods and wave mechanics, and the structure of polycyclic benzenoid hydrocarbons and heterocyclic aromatic compounds. Aromaticity is defined as a function of the electronic structure of the molecule or ion in question and it is shown that this has important consequences in respect of bond lengths, resonance energies, electronic absorption spectra and induced ring currents. Final chapters discuss how far aromatic character and aromaticity are associated with non-benzenoid hydrocarbons and with more complex systems.
Download or read book Advanced Organic Chemistry Reactions And Mechanisms written by Maya Shankar Singh and published by Pearson Education India. This book was released on 2004-09 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Organic Chemistry: Reactions and Mechanisms covers the four types of reactions -- substitution, addition, elimination and rearrangement; the three types of reagents -- nucleophiles, electrophiles and radicals; and the two effects -- electroni.
