Molecular Properties via Induced Current Densities

Molecular Properties via Induced Current Densities PDF Author: Francesco Ferdinando Summa
Publisher: Springer Nature
ISBN: 3031601599
Category :
Languages : en
Pages : 164

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Book Description

Molecular Properties via Induced Current Densities

Molecular Properties via Induced Current Densities PDF Author: Francesco Ferdinando Summa
Publisher: Springer Nature
ISBN: 3031601599
Category :
Languages : en
Pages : 164

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Book Description


Nuclear Magnetic Resonance

Nuclear Magnetic Resonance PDF Author: G A Webb
Publisher: Royal Society of Chemistry
ISBN: 1847555233
Category : Science
Languages : en
Pages : 587

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Book Description
As a spectroscopic method, nuclear magnetic resonance (NMR) has seen spectacular growth, both as a technique and in its applications. Today's applications of NMR span a wide range of scientific disciplines, from physics to biology to medicine. Each volume of Nuclear Magnetic Resonance comprises a combination of annual and biennial reports which together provide comprehensive coverage of the literature on this topic. This Specialist Periodical Report reflects the growing volume of published work involving NMR techniques and applications, in particular NMR of natural macromolecules, which is covered in two reports: NMR of Proteins and Nucleic Acids; and NMR of Carbohydrates, Lipids and Membranes. For those wanting to become rapidly acquainted with specific areas of NMR, Nuclear Magnetic Resonance provides unrivalled scope of coverage. Seasoned practitioners of NMR will find this an invaluable source of current methods and applications. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading experts in their specialist fields, this series is designed to help the chemistry community keep current with the latest developments in their field. Each volume in the series is published either annually or biennially and is a superb reference point for researchers. www.rsc.org/spr

Marco Antonio Chaer Nascimento

Marco Antonio Chaer Nascimento PDF Author: Fernando R. Ornellas
Publisher: Springer Science & Business Media
ISBN: 3642411630
Category : Science
Languages : en
Pages : 132

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Book Description
In this Festschrift dedicated to the 65th birthday of Marco Antonio Chaer Nascimento, selected researchers in theoretical chemistry present research highlights on major developments in the field. Originally published in the journal Theoretical Chemistry Accounts, these outstanding contributions are now available in a hardcover print format. This volume will be of benefit in particular to those research groups and libraries that have chosen to have only electronic access to the journal. It also provides valuable content for all researchers in theoretical chemistry.

Aromaticity

Aromaticity PDF Author: Israel Fernandez
Publisher: Elsevier
ISBN: 0128227435
Category : Science
Languages : en
Pages : 517

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Book Description
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

Applications of Topological Methods in Molecular Chemistry

Applications of Topological Methods in Molecular Chemistry PDF Author: Remi Chauvin
Publisher: Springer
ISBN: 3319290223
Category : Science
Languages : en
Pages : 582

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Book Description
This is the first edited volume that features two important frameworks, Hückel and quantum chemical topological analyses. The contributors, which include an array of academics of international distinction, describe recent applications of such topological methods to various fields and topics that provide the reader with the current state-of-the-art and give a flavour of the wide range of their potentialities.

High Resolution NMR Spectroscopy: Understanding Molecules and their Electronic Structures

High Resolution NMR Spectroscopy: Understanding Molecules and their Electronic Structures PDF Author:
Publisher: Newnes
ISBN: 0444594140
Category : Science
Languages : en
Pages : 448

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Book Description
The progress in nuclear magnetic resonance (NMR) spectroscopy that took place during the last several decades is observed in both experimental capabilities and theoretical approaches to study the spectral parameters. The scope of NMR spectroscopy for studying a large series of molecular problems has notably broadened. However, at the same time, it requires specialists to fully use its potentialities. This is a notorious problem and it is reflected in the current literature where this spectroscopy is typically only used in a routine way. Also, it is seldom used in several disciplines in which it could be a powerful tool to study many problems. The main aim of this book is to try to help reverse these trends.This book is divided in three parts dealing with 1) high-resolution NMR parameters; 2) methods for understanding high-resolution NMR parameters; and 3) some experimental aspects of high-resolution NMR parameters for studying molecular structures. Each part is divided into chapters written by different specialists who use different methodologies in their work. In turn, each chapter is divided into sections. Some features of the different sections are highlighted: it is expected that part of the readership will be interested only in the basic aspects of some chapters, while other readers will be interested in deepening their understanding of the subject dealt with in them. - Shows how NMR parameters are useful for structure assignment as well as to obtain insight on electronic structures - Emphasis on conceptual aspects - Contributions by specialists who use the discussed methodologies in their everyday work

Advances in Quantum Chemical Topology Beyond QTAIM

Advances in Quantum Chemical Topology Beyond QTAIM PDF Author: Juan I. Rodriguez
Publisher: Elsevier
ISBN: 0323908926
Category : Science
Languages : en
Pages : 570

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Book Description
Advances in Quantum Chemical Topology Beyond QTAIM provides a complete overview of the field, starting with traditional methods and then covering key steps to the latest state-of-the-art extensions of QTAIM. The book supports researchers by compiling and reviewing key methods, comparing different algorithms, and providing computational results to show the efficacy of the approaches. Beginning with an introduction to quantum chemistry, QTAIM and key extensions, the book goes on to discuss interacting quantum atoms and related energy properties, explores partitioning methods, and compares algorithms for QTAIM. Partitioning schemes are them compared in more detail before applications are explored and future developments discussed. Drawing together the knowledge of key authorities in the area, this book provides a comprehensive, pedogeological guide to this insightful theory for all those interested in modelling, exploring and understanding molecular properties. - Provides a contemporary review of the extensions and application of QTAIM methods - Compiles all extensions of QTAIM in one place for easy reference - Includes a chapter with an Introduction to Quantum Chemistry - Presents complex information at a level accessible to those engaged in theoretical/computational chemistry

High Resolution NMR Spectroscopy

High Resolution NMR Spectroscopy PDF Author: J.M. García de la Vega
Publisher: Elsevier Inc. Chapters
ISBN: 012808300X
Category : Science
Languages : en
Pages : 31

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Book Description
Natural bond orbital and natural J-coupling methods are used for the analysis of the Fermi-contact contributions to spin–spin coupling constant (SSCC). In this way, the SSCCs are partitioned into three contributions: Lewis, delocalization, and repolarization. This partition is applied to the study of some chemical systems to explain the main electron delocalization effects on SSCCs.

Aromaticity and Metal Clusters

Aromaticity and Metal Clusters PDF Author: Pratim Kumar Chattaraj
Publisher: CRC Press
ISBN: 9781439813355
Category : Science
Languages : en
Pages : 466

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Book Description
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.

Annual Reports on NMR Spectroscopy

Annual Reports on NMR Spectroscopy PDF Author:
Publisher: Academic Press
ISBN: 008054410X
Category : Science
Languages : en
Pages : 313

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Book Description
Nuclear magnetic resonance (NMR) is an analytical tool used by chemists and physicians to study the structure and dynamics of molecules. In recent years, no other technique has grown to such importance as NMR spectroscopy. It is used in all branches of science where precise structural determination is required and where the nature of interactions and reactions in solution is being studied.Annual Reports on NMR has established itself as a premier means for the specialist and nonspecialist alike to become familiar with new techniques and applications of NMR spectroscopy.- Includes comprehensive review articles on NMR Spectroscopy- NMR is used in all branches of science- No other technique has grown to such importance as NMR Spectroscopy in recent years