Bonding In Electron Rich Molecules

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Bonding in Electron-Rich Molecules

Author : Richard D. Harcourt
Publisher : Springer
ISBN 13 : 331916676X
Total Pages : 328 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Bonding in Electron-Rich Molecules by : Richard D. Harcourt

Download or read book Bonding in Electron-Rich Molecules written by Richard D. Harcourt and published by Springer. This book was released on 2015-10-30 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition was updated to include some of the recent developments, such as “increased-valence” structures for 3-electron-3-centre bonding, benzene, electron conduction and reaction mechanisms, spiral chain O4 polymers and recoupled-pair bonding. The author provides qualitative molecular orbital and valence-bond descriptions of the electronic structures for primarily electron-rich molecules, with strong emphasis given to the valence-bond approach that uses “increased-valence” structures. He describes how “long-bond” Lewis structures as well as standard Lewis structures are incorporated into “increased-valence” structures for electron-rich molecules. “Increased-valence” structures involve more electrons in bonding than do their component Lewis structures, and are used to provide interpretations for molecular electronic structure, bond properties and reactivities. Attention is also given to Pauling “3-electron bonds”, which are usually diatomic components of “increased-valence” structures for electron-rich molecules.

Qualitative Valence-Bond Descriptions of Electron-Rich Molecules: Pauling “3-Electron Bonds” and “Increased-Valence” Theory

Author : R. D. Harcourt
Publisher : Springer Science & Business Media
ISBN 13 : 3642932169
Total Pages : 275 pages
Book Rating : 4.6/5 (429 download)

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Book Synopsis Qualitative Valence-Bond Descriptions of Electron-Rich Molecules: Pauling “3-Electron Bonds” and “Increased-Valence” Theory by : R. D. Harcourt

Download or read book Qualitative Valence-Bond Descriptions of Electron-Rich Molecules: Pauling “3-Electron Bonds” and “Increased-Valence” Theory written by R. D. Harcourt and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides qualitative molecular orbital and valence-bond descriptions of the electronic structures for electron-rich molecules, with strong emphasis given to the valence-bond approach. Electron-rich molecules form an extremely large class of molecules, and the results of quantum mechanical studies from different laboratories indicate that qualitative valence-bond descriptions for many of these molecules are incomplete in so far as they usually omit "long-bond" Lewis structures from elementary descriptions of bonding. For example, the usual representation for the electronic structure of the ground-state for 03 involves resonance between the (+1 o and Until standard Lewis structures ~ ~ (-I . b:'" ~d· . . . . , recently, any contribution to resonance of the "long-bond" (or spin-paired o •• / •• ,. . has been largely ignored. diradica~ Lewis structure However, it :0 . 0. . e-. . . . . ______ " has now been calculated to be a very important structure. For the ground-states of numerous other systems, calculations also indicate that "long-bond" structures are more important than is usually supposed, and therefore they should frequently be included in qualitative valence-bond descriptions of electronic structure. The book describes how this may be done, and some of the resulting consequences for the interpretation of the electronic structure, bond properties and reactivities of various electron-rich molecules. When appropriate, molecular orbital and valence bond descriptions of bonding are compared, and relationships that exist between them are derived.

A Dictionary of Chemistry

Author : Richard Rennie
Publisher : Oxford University Press
ISBN 13 : 0191059439
Total Pages : 609 pages
Book Rating : 4.1/5 (91 download)

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Book Synopsis A Dictionary of Chemistry by : Richard Rennie

Download or read book A Dictionary of Chemistry written by Richard Rennie and published by Oxford University Press. This book was released on 2016-01-21 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully revised and updated, the seventh edition of this popular dictionary is the ideal reference resource for students of chemistry, either at school or at university. With over 5000 entries—over 175 new to this edition—it covers all aspects of chemistry, from physical chemistry to biochemistry. The seventh edition boasts broader coverage in areas such as nuclear magnetic resonance, polymer chemistry, nanotechnology and graphene, and absolute configuration, increasing the dictionary's appeal to students in these fields. New diagrams have been added and existing diagrams updated to illustrate topics that would benefit from a visual aid. There are also biographical entries on key figures, featured entries on major topics such as polymers and crystal defects, and a chronology charting the main discoveries in atomic theory, biochemistry, explosives, and plastics.

Valence Bond Theory

Author : David Cooper
Publisher : Elsevier
ISBN 13 : 0080543499
Total Pages : 837 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Valence Bond Theory by : David Cooper

Download or read book Valence Bond Theory written by David Cooper and published by Elsevier. This book was released on 2002-06-05 with total page 837 pages. Available in PDF, EPUB and Kindle. Book excerpt: Valence bond (VB) theory, which builds the descriptions of molecules from those of its constituent parts, provided the first successful quantum mechanical treatments of chemical bonding. Its language and concepts permeate much of chemistry, at all levels. Various modern formulations of VB theory represent serious tools for quantum chemical studies of molecular electronic structure and reactivity. In physics, there is much VB-based work (particularly in semi-empirical form) on larger systems. Importance of TopicThe last decade has seen significant advances in methodology and a vast increase in the range of applications, with many new researchers entering the field.Why This TitleValence Bond Theory succeeds in presenting a comprehensive selection of contributions from leading valence bond (VB) theory researchers throughout the world. It focuses on the vast increase in the range of applications of methodology based on VB theory during the last decade and especially emphasizes recent advances.

Qualitative Valence-bond Descriptions of Electron-rich Molecules

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (224 download)

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Book Synopsis Qualitative Valence-bond Descriptions of Electron-rich Molecules by :

Download or read book Qualitative Valence-bond Descriptions of Electron-rich Molecules written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Chemistry as a Game of Molecular Construction

Author : Sason Shaik
Publisher : John Wiley & Sons
ISBN 13 : 1119001439
Total Pages : 529 pages
Book Rating : 4.1/5 (19 download)

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Book Synopsis Chemistry as a Game of Molecular Construction by : Sason Shaik

Download or read book Chemistry as a Game of Molecular Construction written by Sason Shaik and published by John Wiley & Sons. This book was released on 2016-02-04 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemistry as a Game of Molecular Construction: The Bond-Click Way utilizes an innovative and engaging approach to introduce students to the basic concepts and universal aspects of chemistry, with an emphasis on molecules’ beauty and their importance in our lives. • Offers a unique approach that portrays chemistry as a window into mankind’s material-chemical essence • Reveals the beauty of molecules through the “click” method, a teaching methodology comprised of the process of constructing molecules from building blocks • Styles molecular construction in a way that reveals the universal aspect of chemistry • Allows students to construct molecules, from the simple hydrogen molecule all the way to complex strands of DNA, thereby showing the overarching unity of matter • Provides problems sets and solutions for each chapter

Electron Deficient Compounds

Author : K. Wade
Publisher : Springer Science & Business Media
ISBN 13 : 1468460544
Total Pages : 211 pages
Book Rating : 4.4/5 (684 download)

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Book Synopsis Electron Deficient Compounds by : K. Wade

Download or read book Electron Deficient Compounds written by K. Wade and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about compounds such as the boron hydrides and associated metal hydrides and alkyls which acquired the label 'electron deficient' when they were thought to contain too few valence electrons to hold together. Though they are now recognized as containing the numbers of bonding electrons appropriate for their structures, the term 'electron deficient' is still commonly applied to many substances that contain too few valence electrons to provide a pair for every pair of atoms close enough to be regarded as covalently bonded. The study of such substances has contributed much to chemistry. Techniques for the vacuum manipulation of volatile substances were devised specifically for their study; developments in valence theory resulted from considerations of their bonding; and the reactivity of several (for example, diborane and complex metal hydrides, lithium and aluminium alkyls) has made them valuable reagents. The purpose of this book is to provide an introduction to the chemistry of these fascinating compounds. The experimental and spectroscopic methods by which they can be studied are outlined, the various types of structure they adopt are described and profusely illustrated, and the relative merits of extended valence bond and simple molecular orbital treatments of their bonding are discussed, with as liberal use of diagrams and as limited recourse to the Greek alphabet as possible. A recurring theme is the importance attached to considerations of molecular sym metry. Their reactions are treated in sufficient detail to show whether these reflect any deficiency of electrons.

Chemical Bonding

Author : Richard Dronskowski
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3111167267
Total Pages : 250 pages
Book Rating : 4.1/5 (111 download)

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Book Synopsis Chemical Bonding by : Richard Dronskowski

Download or read book Chemical Bonding written by Richard Dronskowski and published by Walter de Gruyter GmbH & Co KG. This book was released on 2023-10-02 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern DFT simulations of solids and molecules are typically based on the mighty plane-wave pseudopotential combination. Despite being numerically efficient, it does not allow for chemical conclusions unless the electronic structure is unitarily transformed into atomic orbitals. This primer for chemists and as well for physicists and engineers shows how to simply extract the chemistry and, hence, truly understand a plethora of real-world materials The goal of this humorous primer entertaining to read is to truly serve but not repel the reader. Recent in-person and also virtual summer schools in Europe and Asia have demonstrated the need for such a primer, also to be used for self-training

Aromaticity and Other Conjugation Effects

Author : Rolf Gleiter
Publisher : John Wiley & Sons
ISBN 13 : 352732934X
Total Pages : 486 pages
Book Rating : 4.5/5 (273 download)

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Book Synopsis Aromaticity and Other Conjugation Effects by : Rolf Gleiter

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.

Qualitative Valence-bond Descriptions of Electron-rich Molecules

Author : R. D. Harcourt
Publisher : Springer Verlag
ISBN 13 : 9780387115559
Total Pages : 0 pages
Book Rating : 4.1/5 (155 download)

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Book Synopsis Qualitative Valence-bond Descriptions of Electron-rich Molecules by : R. D. Harcourt

Download or read book Qualitative Valence-bond Descriptions of Electron-rich Molecules written by R. D. Harcourt and published by Springer Verlag. This book was released on 1982 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Instant Notes in Organic Chemistry

Author : Graham Patrick
Publisher : Taylor & Francis
ISBN 13 : 1135321256
Total Pages : 362 pages
Book Rating : 4.1/5 (353 download)

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Book Synopsis Instant Notes in Organic Chemistry by : Graham Patrick

Download or read book Instant Notes in Organic Chemistry written by Graham Patrick and published by Taylor & Francis. This book was released on 2004-08-02 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: BIOS Instant Notes Organic Chemistry, Second Edition, is the perfect text for undergraduates looking for a concise introduction to the subject, or a study guide to use before examinations. Each topic begins with a summary of essential facts-an ideal revision checklist-followed by a description of the subject that focuses on core information, with clear, simple diagrams that are easy for students to understand and recall in essays and exams.

Organic Radicals

Author : Chuanyi Wang
Publisher : Elsevier
ISBN 13 : 0443133476
Total Pages : 448 pages
Book Rating : 4.4/5 (431 download)

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Book Synopsis Organic Radicals by : Chuanyi Wang

Download or read book Organic Radicals written by Chuanyi Wang and published by Elsevier. This book was released on 2024-03-14 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Radicals summarizes the applications of these materials in several fields, in addition to analyzing challenges, limitations and impacts of materials containing organic radicals on human, plants, water, soil, and animals. Sections cover uses of organic radicals as effective precursors for block molecules building and discuss their effectiveness as precursors of organic radical- containing materials synthesis and their applications in medicine, biology, electronics, environmental sciences, plastics synthesis, polymers building and the several impacts after organic radicals uses. In recent years, the rapid development of organic radical-containing materials has afforded an interesting research area in various applications. - Covers the main proprieties and current techniques in organic radicals' measurements, advantages, and disadvantages - Analyzes the lifecycle analysis and the stability of organic radicals, their biodegradability, and biocompatibility - Provides a comprehensive overview about the chemical synthesis of organic radicals, their physiochemical proprieties, and risks caused by the presence of high amounts of organic radicals

Inorganic Chemistry

Author : William W. Porterfield
Publisher : Academic Press
ISBN 13 : 0323138942
Total Pages : 938 pages
Book Rating : 4.3/5 (231 download)

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Book Synopsis Inorganic Chemistry by : William W. Porterfield

Download or read book Inorganic Chemistry written by William W. Porterfield and published by Academic Press. This book was released on 2013-04-12 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is one of the few books available that uses unifying theoretical concepts to present inorganic chemistry at the advanced undergraduate and graduate levels--most texts are organized around the periodic table, while this one is structured after bonding models, structure types, and reaction patterns. But the real strength of Porterfield's Second Edition is its clear presentation of ample background description, especially in recent areas of development such as cluster molecules, industrial catalysis, and bio-inorganic chemistry. This information will enable students to understand most current journals, empowering them to stay abreast of the latest advances in the field. Specific improvements of the Second Edition include new chapters on materials-science applications and bioinorganic chemistry, an extended discussion of transition-metal applications (including cuprate superconductors), and extended Tanabe-Sugano diagrams. - Extended treatment of inorganic materials science--ceramics, refractories, magnetic materials, superconductors--in the context of solid-state chemistry - Extended coverage of biological systems and their chemical and physiological consequences--02 metabolism, N2 fixation, muscle action, iron storage, cisplatin and nucleic acid structural probes, and photosynthesis - Unusual structures and species--silatranes, metallacarboranes, alkalides and electrides, vapor-deposition species, proton and hybrid sponges, massive transition-metal clusters, and agostic ligands - Thorough examination of industrial processes using organometallic catalysts and their mechanisms - Entropy-driven reactions - Complete discussion of inorganic photochemistry

In Situ Remediation Engineering

Author : Suthan S. Suthersan
Publisher : CRC Press
ISBN 13 : 1135461945
Total Pages : 534 pages
Book Rating : 4.1/5 (354 download)

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Book Synopsis In Situ Remediation Engineering by : Suthan S. Suthersan

Download or read book In Situ Remediation Engineering written by Suthan S. Suthersan and published by CRC Press. This book was released on 2004-12-28 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Situ Remediation Engineering provides a comprehensive guide to the design and implementation of reactive zone methods for treatment of all major classes of groundwater contamination. It teaches the fundamentals that underlie development of cost-effective reactive zone strategies, guides the selection of cost-effective remedial strategies and provides environmental engineers and scientists with tools to achieve optimal deployment of source area, reactive barrier, and site-wide treatments. It offers extensive coverage of remedial system operation, discussing reagent injection strategies, interpretation of process monitoring results for biological and chemical reactive zone systems, and impacts of treatment processes on aquifer hydraulic characteristics.

Shriver and Atkins' Inorganic Chemistry

Author : Peter Atkins
Publisher : Oxford University Press, USA
ISBN 13 : 0199236178
Total Pages : 852 pages
Book Rating : 4.1/5 (992 download)

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Book Synopsis Shriver and Atkins' Inorganic Chemistry by : Peter Atkins

Download or read book Shriver and Atkins' Inorganic Chemistry written by Peter Atkins and published by Oxford University Press, USA. This book was released on 2010 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inorganic Chemistry fifth edition represents an integral part of a student's chemistry education. Basic chemical principles are set out clearly in 'Foundations' and are fully developed throughout the text, culminating in the cutting-edge research topics of the 'Frontiers', which illustrate the dynamic nature of inorganic chemistry.

Metal Ions in Biochemistry

Author : Pabitra Krishna Bhattacharya
Publisher : CRC Press
ISBN 13 : 1000292649
Total Pages : 293 pages
Book Rating : 4.0/5 (2 download)

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Book Synopsis Metal Ions in Biochemistry by : Pabitra Krishna Bhattacharya

Download or read book Metal Ions in Biochemistry written by Pabitra Krishna Bhattacharya and published by CRC Press. This book was released on 2020-12-13 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Metal Ions in Biochemistry deals with the multidisciplinary subject of bio-inorganic chemistry, encompassing the disciplines of inorganic chemistry, biochemistry and medicine. The book deals with the role of metal ions in biochemistry, emphasising that biochemistry is mainly the chemistry of metal-biochemical complexes. Hence, the book starts with the structures of biochemicals and the identification of their metal binding sites. Thermodynamic and kinetic properties of the complexes are explained from the point of view of the nature of metal-ligand bonds. Various catalytic and structural roles of metal ions in biochemicals are discussed in detail. Features The role of Na+ and K+ in brain chemistry. The role of zinc insulin in glucose metabolism and its enhancement by vanadium and chromium compounds. Discussion of the role of zinc signals, zinc fingers and cascade effect in biochemistry. Haemoglobin synthesis and the role of vitamin B12 in it. The role of lanthanides in biochemical systems. A detailed discussion of the role of non-metals in biochemistry, a topic missing in most of the books on bio-inorganic chemistry. The study of bio-inorganic chemistry makes biochemists rethink the mechanistic pathways of biochemical reactions mediated by metal ions. There is a realisation of the role of metal complexes and inorganic ions as therapeutics such as iron in leukaemia, thalassemia and sickle cell anaemia, iodine in hypothyroidism and zinc, vanadium and chromium in glucose metabolism. The most recent realisation is of the use of zinc in the prevention and treatment of COVID-19.

Remediation Engineering

Author : Suthan S. Suthersan
Publisher : CRC Press
ISBN 13 : 1315349957
Total Pages : 1286 pages
Book Rating : 4.3/5 (153 download)

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Book Synopsis Remediation Engineering by : Suthan S. Suthersan

Download or read book Remediation Engineering written by Suthan S. Suthersan and published by CRC Press. This book was released on 2016-11-25 with total page 1286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remediation engineering has evolved and advanced from the stage of being a sub-discipline of environmental engineering into its own engineering discipline supporting the growth of a global industry. This fully-updated second edition will capture the fundamental advancements that have taken place during the last two decades, within the sub-disciplines that form the foundation of the remediation engineering platform. The book will cover the entire spectrum of current technologies that are being employed in this industry, and will also touch on future trends and how practitioners should anticipate and adapt to those needs.