Ions and Ion Pairs in Organic Reactions PDF Download

Author: J. Smid
Publisher: Elsevier
ISBN: 1483284573
Category : Science
Languages : en
Pages : 145

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Book Description
Ions and Ion Pairs and their Role in Chemical Reactions covers a wide spectrum of ion pairing phenomena. This book focuses on the structure, dynamics, and energetics of ions and ion pairs and their complexes with solvent molecules and ion coordinating ligands in the solid, liquid, and gaseous state. Organized into 12 chapters, this book begins with an overview of the theory and complications involved in dipole moment measurements in slightly conductive polar solvents. This text then explores the measurement of gas phase ion-molecule equilibria by special spectrometric methods. Other chapters consider the NMR experiments on potassium biphenyl, sodium biphenyl, and rubidium biphenyl, dissolved in different solvents. This book discusses as well the ion pair formation of some cyclic conjugated carbanions and nitranions. The final chapter deals with the information obtained from relaxation measurements on processes such as ionic dissociation, aggregation, and solvent separation. This book is a valuable resource for chemists, organic chemists, and quantum chemists.

Author: Michael Szwarc
Publisher: John Wiley & Sons
ISBN:
Category : Chemistry, Organic
Languages : en
Pages : 592

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Author:
Publisher: Academic Press
ISBN: 0080581544
Category : Science
Languages : en
Pages : 354

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Book Description
Advances in Physical Organic Chemistry provides the chemical community with authoritative and critical assessments of the many aspects of physical organic chemistry. The field is a rapidly developing one, with results and methodologies finding application from biology to solid state physics.

Author: Suojiang Zhang
Publisher: Springer
ISBN: 3642386199
Category : Science
Languages : en
Pages : 201

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Book Description
Structures, Bonding and Hydrogen Bonds, by Kun Dong, Qian Wang, Xingmei Lu, Suojiang Zhang Aggregation in System of Ionic Liquids, by Jianji Wang, Huiyong Wang Dissolution of Biomass Using Ionic Liquids, by Hui Wang, Gabriela Gurau, Robin D. Rogers Effect of the Structures of Ionic Liquids on Their Physical-Chemical Properties, by Yu-Feng Hu, Xiao-Ming Peng Microstructure study of Ionic liquids by spectroscopy, by Haoran Li Structures and Thermodynamic Properties of Ionic Liquids, by Tiancheng Mu, Buxing Han

Author: Mandeep Dalal
Publisher: Dalal Institute
ISBN: 8193872010
Category : Science
Languages : en
Pages : 432

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Book Description
An advanced-level textbook of physical chemistry for the graduate (B.Sc) and postgraduate (M.Sc) students of Indian and foreign universities. This book is a part of four volume series, entitled "A Textbook of Physical Chemistry – Volume I, II, III, IV". CONTENTS: Chapter 1. Quantum Mechanics – I: Postulates of quantum mechanics; Derivation of Schrodinger wave equation; Max-Born interpretation of wave functions; The Heisenberg’s uncertainty principle; Quantum mechanical operators and their commutation relations; Hermitian operators (elementary ideas, quantum mechanical operator for linear momentum, angular momentum and energy as Hermition operator); The average value of the square of Hermitian operators; Commuting operators and uncertainty principle(x & p; E & t); Schrodinger wave equation for a particle in one dimensional box; Evaluation of average position, average momentum and determination of uncertainty in position and momentum and hence Heisenberg’s uncertainty principle; Pictorial representation of the wave equation of a particle in one dimensional box and its influence on the kinetic energy of the particle in each successive quantum level; Lowest energy of the particle. Chapter 2. Thermodynamics – I: Brief resume of first and second Law of thermodynamics; Entropy changes in reversible and irreversible processes; Variation of entropy with temperature, pressure and volume; Entropy concept as a measure of unavailable energy and criteria for the spontaneity of reaction; Free energy, enthalpy functions and their significance, criteria for spontaneity of a process; Partial molar quantities (free energy, volume, heat concept); Gibb’s-Duhem equation. Chapter 3. Chemical Dynamics – I: Effect of temperature on reaction rates; Rate law for opposing reactions of Ist order and IInd order; Rate law for consecutive & parallel reactions of Ist order reactions; Collision theory of reaction rates and its limitations; Steric factor; Activated complex theory; Ionic reactions: single and double sphere models; Influence of solvent and ionic strength; The comparison of collision and activated complex theory. Chapter 4. Electrochemistry – I: Ion-Ion Interactions: The Debye-Huckel theory of ion- ion interactions; Potential and excess charge density as a function of distance from the central ion; Debye Huckel reciprocal length; Ionic cloud and its contribution to the total potential; Debye - Huckel limiting law of activity coefficients and its limitations; Ion-size effect on potential; Ion-size parameter and the theoretical mean-activity coefficient in the case of ionic clouds with finite-sized ions; Debye - Huckel-Onsager treatment for aqueous solutions and its limitations; Debye-Huckel-Onsager theory for non-aqueous solutions; The solvent effect on the mobality at infinite dilution; Equivalent conductivity (Λ) vs. concentration c 1/2 as a function of the solvent; Effect of ion association upon conductivity (Debye- Huckel - Bjerrum equation). Chapter 5. Quantum Mechanics – II: Schrodinger wave equation for a particle in a three dimensional box; The concept of degeneracy among energy levels for a particle in three dimensional box; Schrodinger wave equation for a linear harmonic oscillator & its solution by polynomial method; Zero point energy of a particle possessing harmonic motion and its consequence; Schrodinger wave equation for three dimensional Rigid rotator; Energy of rigid rotator; Space quantization; Schrodinger wave equation for hydrogen atom, separation of variable in polar spherical coordinates and its solution; Principle, azimuthal and magnetic quantum numbers and the magnitude of their values; Probability distribution function; Radial distribution function; Shape of atomic orbitals (s,p & d). Chapter 6. Thermodynamics – II: Classius-Clayperon equation; Law of mass action and its thermodynamic derivation; Third law of thermodynamics (Nernest heat theorem, determination of absolute entropy, unattainability of absolute zero) and its limitation; Phase diagram for two completely miscible components systems; Eutectic systems, Calculation of eutectic point; Systems forming solid compounds Ax By with congruent and incongruent melting points; Phase diagram and thermodynamic treatment of solid solutions. Chapter 7. Chemical Dynamics – II: Chain reactions: hydrogen-bromine reaction, pyrolysis of acetaldehyde, decomposition of ethane; Photochemical reactions (hydrogen - bromine & hydrogen -chlorine reactions); General treatment of chain reactions (ortho-para hydrogen conversion and hydrogen - bromine reactions); Apparent activation energy of chain reactions, Chain length; Rice-Herzfeld mechanism of organic molecules decomposition(acetaldehyde); Branching chain reactions and explosions ( H2-O2 reaction); Kinetics of (one intermediate) enzymatic reaction : Michaelis-Menton treatment; Evaluation of Michaelis 's constant for enzyme-substrate binding by Lineweaver-Burk plot and Eadie-Hofstae methods; Competitive and non-competitive inhibition. Chapter 8. Electrochemistry – II: Ion Transport in Solutions: Ionic movement under the influence of an electric field; Mobility of ions; Ionic drift velocity and its relation with current density; Einstein relation between the absolute mobility and diffusion coefficient; The Stokes- Einstein relation; The Nernst -Einstein equation; Walden’s rule; The Rate-process approach to ionic migration; The Rate process equation for equivalent conductivity; Total driving force for ionic transport, Nernst - Planck Flux equation; Ionic drift and diffusion potential; the Onsager phenomenological equations; The basic equation for the diffusion; Planck-Henderson equation for the diffusion potential.

Author: Teresa Cecchi
Publisher: CRC Press
ISBN: 1439800979
Category : Medical
Languages : en
Pages : 218

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Book Description
Ion-Pair Chromatography (IPC) is a rapidly evolving method for difficult analyses of organic and inorganic ions and ionogenic, neutral, and zwitterionic compounds. The possibilities for this technology continue to grow as novel ion-pair reagents and strategies are introduced at an accelerated level. Compensating for a dearth in the literature, Ion-

Author: Zory Vlad Todres
Publisher: CRC Press
ISBN: 0824743717
Category : Science
Languages : en
Pages : 537

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Book Description
Examining the formation, transformation, and application of ion radicals in typical conditions of organic synthesis, Organic Ion Radicals: Chemistry and Applications explains the reactions and principles of ion radical chemistry. The author addresses methods of determining ion- radical mechanisms and controlling ion radical reactions, issues relating to ecology and biology, and inorganic participants in ion radical organic reactions. Applications discussed include the roles of ion radicals in biological systems and their uses in optoelectronics, organic metals, and the manufacture of paper.

Author: Felix A. Carroll
Publisher: John Wiley & Sons
ISBN: 1119808642
Category : Science
Languages : en
Pages : 869

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Book Description
PERSPECTIVES ON STRUCTURE AND MECHANISM IN ORGANIC CHEMISTRY “Beyond the basics” physical organic chemistry textbook, written for advanced undergraduates and beginning graduate students Based on the author’s first-hand classroom experience, Perspectives on Structure and Mechanism in Organic Chemistry uses complementary conceptual models to give new perspectives on the structures and reactions of organic compounds, with the overarching goal of helping students think beyond the simple models of introductory organic chemistry courses. Through this approach, the text better prepares readers to develop new ideas in the future. In the 3rd Edition, the author thoroughly updates the topics covered and reorders the contents to introduce computational chemistry earlier and to provide a more natural flow of topics, proceeding from substitution, to elimination, to addition. About 20% of the 438 problems have been either replaced or updated, with answers available in the companion solutions manual. To remind students of the human aspect of science, the text uses the names of investigators throughout the text and references material to original (or accessible secondary or tertiary) literature as a guide for students interested in further reading. Sample topics covered in Perspectives on Structure and Mechanism in Organic Chemistry include: Fundamental concepts of organic chemistry, covering atoms and molecules, heats of formation and reaction, bonding models, and double bonds Density functional theory, quantum theory of atoms in molecules, Marcus Theory, and molecular simulations Asymmetric induction in nucleophilic additions to carbonyl compounds and dynamic effects on reaction pathways Reactive intermediates, covering reaction coordinate diagrams, radicals, carbenes, carbocations, and carbanions Methods of studying organic reactions, including applications of kinetics in studying reaction mechanisms and Arrhenius theory and transition state theory A comprehensive yet accessible reference on the subject, Perspectives on Structure and Mechanism in Organic Chemistry is an excellent learning resource for students of organic chemistry, medicine, and biochemistry. The text is ideal as a primary text for courses entitled Advanced Organic Chemistry at the upper undergraduate and graduate levels.

Author: Paul Flowers
Publisher:
ISBN: 9781947172623
Category : Chemistry
Languages : en
Pages : 0

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Book Description
Chemistry 2e is designed to meet the scope and sequence requirements of the two-semester general chemistry course. The textbook provides an important opportunity for students to learn the core concepts of chemistry and understand how those concepts apply to their lives and the world around them. The book also includes a number of innovative features, including interactive exercises and real-world applications, designed to enhance student learning. The second edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Substantial improvements have been made in the figures, illustrations, and example exercises that support the text narrative. Changes made in Chemistry 2e are described in the preface to help instructors transition to the second edition.

Author: Eram Sharmin
Publisher: BoD – Books on Demand
ISBN: 9535136275
Category : Science
Languages : en
Pages : 242

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Book Description
The book presents developments and applications of these methods, such as NMR, mass, and others, including their applications in pharmaceutical and biomedical analyses. The book is divided into two sections. The first section covers spectroscopic methods, their applications, and their significance as characterization tools; the second section is dedicated to the applications of spectrophotometric methods in pharmaceutical and biomedical analyses. This book would be useful for students, scholars, and scientists engaged in synthesis, analyses, and applications of materials/polymers.