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Author: Gautam R. Desiraju
Publisher: Elsevier Publishing Company
ISBN:
Category : Science
Languages : en
Pages : 336
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Book Description
Hardbound. A substantial amount of recent research has revealed that an understanding of weak intermolecular interactions is a most important priority in the chemical sciences today. One of the many advantages to ensue from such an understanding is that improved methods for the prediction and design of organic crystal structures have become possible. Concurrently, strategies for crystal engineering have advanced to such an extent to warrant the publication of this book in which the author reviews and evaluates past developments, and comments on future possibilities. The book is intended for three distinct groups of scientists: organic chemists and materials scientists who are now coordinating their efforts in designing molecular crystals for a variety of physical and chemical applications; physical and theoretical chemists who are concerned with intermolecular interactions in organic solids; crystallographers who attempt to search for patterns in crysta
Author: Gautam R. Desiraju
Publisher: Elsevier Publishing Company
ISBN:
Category : Science
Languages : en
Pages : 336
Get Book Here
Book Description
Hardbound. A substantial amount of recent research has revealed that an understanding of weak intermolecular interactions is a most important priority in the chemical sciences today. One of the many advantages to ensue from such an understanding is that improved methods for the prediction and design of organic crystal structures have become possible. Concurrently, strategies for crystal engineering have advanced to such an extent to warrant the publication of this book in which the author reviews and evaluates past developments, and comments on future possibilities. The book is intended for three distinct groups of scientists: organic chemists and materials scientists who are now coordinating their efforts in designing molecular crystals for a variety of physical and chemical applications; physical and theoretical chemists who are concerned with intermolecular interactions in organic solids; crystallographers who attempt to search for patterns in crysta
Author: Edwin Weber
Publisher: Springer
ISBN: 3540691782
Category : Science
Languages : en
Pages : 230
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Book Description
Considering the high level of our knowledge concerning covalent bond formation in the organic chemistry of molecules, our understanding of the principles involved in organic solid design is almost in its infancy. While chemists today are able to synthesize organic molecules of very high complexity using sophisticated methods of preparation, they lack general approaches enabling them to reliably predict organic crystalline or solid structures from molecular descriptors - no matter how simple they are. On the other hand, nearly all the organic matter surrounding us is not in the single-molecule state but aggregated and condensed to form liquid or solid molecular assemblages and structural arrays giving rise to the appearances and properties of organic compounds we usually observe. Obviously, the electrical, optical or magnetic properties of solid organic materials that are important requirements for future technologies and high-tech applications, as well as the stability and solubility behavior of a medicament depend on the structure of the molecule and the intramolecular forces, but even more decisively on the intermolecular forces, i. e. the packing structure of the molecules to which a general approach is lacking. This situation concerned ]. Maddox some years ago to such a degree that he described it as "one of the continuing scandals in the physical sciences" [see (1998) Nature 335:201; see also Ball, P. (1996) Nature 381:648]. The problem of predicting organic solid and crystal structures is very dif- cult.
Author: Edwin Weber
Publisher:
ISBN: 9783662147672
Category :
Languages : en
Pages : 236
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Book Description
Author: Zhang, Peng
Publisher:
ISBN:
Category :
Languages : en
Pages : 388
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Book Description
Author: Fumio Toda
Publisher: Springer Science & Business Media
ISBN: 9401700893
Category : Science
Languages : en
Pages : 279
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Book Description
Most organic reactions have long been carried out in organic solvents without concern for their real necessity, reaction efficiency, and pollution problems. Very recently, we have found that most organic reactions can be carried out in the absence of a solvent, namely, in the solid state. In many cases, the solid-state reaction proceeds more easily and efficiently, and even more selectively than solution reaction. This shows that molecules move easily and selectively in the solid state. This finding changed the classical idea which suggests "molecules do not move and reactions do not occur in the solid state", and opened up a new research field for the study molecular dynamics in the solid state. The organic solid state reactions have many possibilities to be developed. For example, enantioselective reactions can easily be accomplished by carrying out the reaction in an inclusion complex crystal with an optically active host compound. Catalytic reactions also proceed in the solid state. Moreover, the solid-state reactions are more economical and ecologically sound. In the future, pollution-free synthetic procedures in the solid state will become increasingly important, not only in chemical industries but also in university laboratories.
Author: Dejan-Kresimir Bucar
Publisher:
ISBN:
Category : Molecular crystals
Languages : en
Pages : 283
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Book Description
In addition to solid-state reactions and materials derived therefrom, we systematically studied hierarchies of supramolecular synthons in pharmaceutical cocrystals comprised of multi-functional molecules. Pharmaceutical cocrystals have been recently shown to exhibit physical properties superior to those of parent drugs. Our studies involved xanthine alkaloids as pharmaceutical agents and a series of hydroxylated benzoic acids as cocrystal formers. Synthon hierarchies have been established for three xanthine alkaloids. We also discovered pharmaceutical salts that formed where cocrystallization was expected to occur. Reasons contributing to such unexpected salt formation were investigated using X-ray crystallography and computational methods. The established synthon hierarchies are expected to contribute to a better understanding of self-assembly processes in cocrystals that is crucial for the development of state-of-art drugs, and the design of organic reactions in the solid state.
Author: William Jones
Publisher: CRC Press
ISBN: 9781420049343
Category : Science
Languages : en
Pages : 444
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Book Description
Interest in organic molecular solids extends to a range of fields including chemistry, physics, electrical engineering, and materials science. In chemistry, it applies to such topics as solid state reactivity, crystal engineering, theoretical approaches to crystal structure determination, and morphology control. In physics, electrical engineering, and materials science, the possibility of producing organic-based materials (such as crystals, polymers, thin films, or liquid crystals) with potential electronic, opto-electronic, and magnetic uses is a major area of current research interest throughout the world. Organic Molecular Solids examines the uses of organic-based materials over a wide range of applications and interests. Each chapter surveys a relevant topic, providing appropriate introductory background information and modern developments.
Author: Gautam R. Desiraju
Publisher: International Union of Crystal
ISBN: 9780198509707
Category : Hydrogen bonding
Languages : en
Pages : 530
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Book Description
The weak or non-conventional hydrogen bond has been subject of intense scrutiny over recent years in several fields, in particular in structural chemistry, structural biology, and also in the pharmaceutical sciences. There is today a large body of experimental and theoretical evidenceconfirming that hydrogen bonds like C-H...O, N-H...pi, C-H...pi and even bonds like O-H...metal play distinctive roles in molecular recognition, guiding molecular association, and in determining molecular and supramolecular architectures. The relevant compound classes include organometalliccomplexes, organic and bio-organic systems, and also DNA and proteins. The book provides a comprehensive assessment of this interaction type, and is of interest to all those interested in structural and supramolecular science, including fields as crystal engineering and drug design.
Author: Wenping Hu
Publisher: John Wiley & Sons
ISBN: 3527653473
Category : Technology & Engineering
Languages : en
Pages : 503
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Book Description
Written by internationally recognized experts in the field with academic as well as industrial experience, this book concisely yet systematically covers all aspects of the topic. The monograph focuses on the optoelectronic behavior of organic solids and their application in new optoelectronic devices. It covers organic field-effect and organic electroluminescent materials and devices, organic photonics, materials and devices, as well as organic solids in photo absorption and energy conversion. Much emphasis is laid on the preparation of functional materials and the fabrication of devices, from materials synthesis and purification, to physicochemical properties and the basic processes and working principles of the devices. The only book to cover fundamentals, applications, and the latest research results, this is a handy reference for both researchers and those new to the field. From the contents: * Electronic process in organic solids * Organic/polymeric semiconductors for field-effect transistors * Organic/polymeric field-effect transistors * Organic circuits and organic single molecular transistors * Polymer light-emitting Diodes (PLEDs): devices and materials * Organic solids for photonics * Organic photonic devices * Organic solar cells based on small molecules * Polymer solar cells * Dye-sensitized solar cells (DSSCs) * Organic thermoelectric power devices
Author: Patrick H. Toy
Publisher: John Wiley & Sons
ISBN: 1118141636
Category : Science
Languages : en
Pages : 560
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Book Description
Presents both the fundamental concepts and the most recent applications in solid-phase organic synthesis With its emphasis on basic concepts, Solid-Phase Organic Synthesis guides readers through all the steps needed to design and perform successful solid-phase organic syntheses. The authors focus on the fundamentals of heterogeneous supports in the synthesis of organic molecules, explaining the use of a solid material to facilitate organic synthesis. This comprehensive text not only presents the fundamentals, but also reviews the most recent research findings and applications, offering readers everything needed to conduct their own state-of-the-art science experiments. Featuring chapters written by leading researchers in the field, Solid-Phase Organic Synthesis is divided into two parts: Part One, Concepts and Strategies, discusses the linker groups used to attach the synthesis substrate to the solid support, colorimetric tests to identify the presence of functional groups, combinatorial synthesis, and diversity-oriented synthesis. Readers will discover how solid-phase synthesis is currently used to facilitate the discovery of new molecular functionality. The final chapter discusses how using a support can change or increase reaction selectivity. Part Two, Applications, presents examples of the solid-phase synthesis of various classes of organic molecules. Chapters explore general asymmetric synthesis on a support, strategies for heterocyclic synthesis, and synthesis of radioactive organic molecules, dyes, dendrimers, and oligosaccharides. Each chapter ends with a set of conclusions that underscore the key concepts and methods. References in each chapter enable readers to investigate any topic in greater depth. With its presentation of basic concepts as well as recent findings and applications, Solid-Phase Organic Synthesis is the ideal starting point for students and researchers in organic, medicinal, and combinatorial chemistry who want to take full advantage of current solid-phase synthesis techniques.
