Molecular Mixed Crystals

Author : A. I. Kitaigorodsky
Publisher : Springer Science & Business Media
Page : 403 pages
File Size : 45,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642816727

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Mixed Crystals by A. I. Kitaigorodsky Pdf

The two-word title of this book can only give an indication about its content and approach to the subject it deals with. In the course of time, the term has gradually become somewhat blurred. The reason is easy to see: similar problems are now more and more frequently studied by different branches of natural science. The term "mixed crystals" has acquired specific connotations in physics, chemistry, biology, and geology. One and the same term can now serve as a name for things which are either not quite the same or sometimes quite different. And this is precisely what happened to the two words in the title of the book. One of them, the term "crystal", for which crystallography had an un ambiguous definition, is now employed by biologists to describe the structure of cell membranes and by chemists who use it to denote degrees of polymer crystallinity. "Crystal" has thus become a broad term that can help describe any solid, or just a condensed state of a substance, if the solid has a suf ficient degree of order in the arrangement of its components. But the book is called "~lixed Crystals". The other word in its title, the adjective "mixed", has also developed several meanings. It is now thought ap plicable to both homogeneous and heterogeneous systems, that is, to crystals composed of different molecules and also to solids that are a mixture of crys tals with different structures.

Author : Miquel Àngel Cuevas-Diarte,Harry A.J. Oonk
Publisher : Springer
Page : 336 pages
File Size : 41,8 Mb
Release : 2021-06-28
Category : Science
ISBN : 3030687260

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Molecular Mixed Crystals by Miquel Àngel Cuevas-Diarte,Harry A.J. Oonk Pdf

This book focuses on mixed crystals formed by molecular substances. The emphasis lies on the elucidation of the structural and thermodynamic properties of two-component systems. Thanks to the fact that the research efforts have been directed to a number of families of chemically coherent substances, rather than to a collection of isolated systems, the knowledge of mixed crystals has substantially increased. This is reflected by the discovery of several empirical relationships between thermodynamic properties, crystallographic properties, and also between thermodynamic mixing properties and exothermodynamic parameters, such as the structural mismatch between the components of the binary systems. This book is a benchmark for material scientists and a unique starting point for anyone interested in mixed crystals.

Author : Miquel Àngel Cuevas-Diarte,Harry A. J. Oonk
Publisher : Springer Nature
Page : 336 pages
File Size : 48,7 Mb
Release : 2021-05-22
Category : Science
ISBN : 9783030687274

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Molecular Mixed Crystals by Miquel Àngel Cuevas-Diarte,Harry A. J. Oonk Pdf

This book focuses on mixed crystals formed by molecular substances. The emphasis lies on the elucidation of the structural and thermodynamic properties of two-component systems. Thanks to the fact that the research efforts have been directed to a number of families of chemically coherent substances, rather than to a collection of isolated systems, the knowledge of mixed crystals has substantially increased. This is reflected by the discovery of several empirical relationships between thermodynamic properties, crystallographic properties, and also between thermodynamic mixing properties and exothermodynamic parameters, such as the structural mismatch between the components of the binary systems. This book is a benchmark for material scientists and a unique starting point for anyone interested in mixed crystals.

Author : Thijs Jitse Aartsma
Publisher : Unknown
Page : 122 pages
File Size : 55,6 Mb
Release : 1978
Category : Electronic
ISBN : UCAL:B2705595

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Photon Echo Relaxation in Molecular Mixed Crystals by Thijs Jitse Aartsma Pdf

Author : Wim Hesselink
Publisher : Unknown
Page : 144 pages
File Size : 41,6 Mb
Release : 19??
Category : Electronic
ISBN : UCAL:B2712038

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Picosecond dephasing and relaxation in molecular mixed crystals... by Wim Hesselink Pdf

Author : A Kitaigorodsky
Publisher : Elsevier
Page : 571 pages
File Size : 54,6 Mb
Release : 2012-12-02
Category : Science
ISBN : 9780323145657

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Molecular crystals and Molecules by A Kitaigorodsky Pdf

Molecular Crystals and Molecules deals with some of the problems of molecular crystallography and certain aspects of molecular structure. This book is composed of eight chapters that specifically cover the significant progress of conformational research. The opening chapter describes the structure of crystals considering the close-packing principle, disorder elements, and binary systems. The next two chapters examine the calculation of crystal lattice energy and dynamics. These topics are followed by discussions on the molecular movement, structural, and thermodynamic aspects of crystals. The final chapters look into the parameters for conformational calculations of molecules, macromolecules, and biopolymers. This book will be of great value to physical chemists and researchers who are interested in crystal and molecular structure.

Author : Yuji Ohashi
Publisher : John Wiley & Sons
Page : 360 pages
File Size : 49,9 Mb
Release : 2008-09-26
Category : Science
ISBN : 9783527616121

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Reactivity in Molecular Crystals by Yuji Ohashi Pdf

Do you need to design syntheses that are * highly selective * fast * enantioselective with quantitative enantiomeric yield? This book describes in detail how best to exploit the enormous synthetic potential of solid state reactions. Written by leading experts, it provides in-depth information on * the theoretical and physico-chemical approach to solid state reactions * solid-to-solid organic reactions * stereoselective solid state photoreactions * reactivity and crystal structure An ideal companion to Dunitz and Bürgi's 'Structure Correlation', this book will be highly useful to synthetic organic chemists, stereochemists, crystallographers, and solid-state chemists

Author : A. B. Zahlan
Publisher : CUP Archive
Page : 250 pages
File Size : 45,6 Mb
Release : 1968-11-02
Category : Science
ISBN : 0521073529

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Excitons, Magnons and Phonons in Molecular Crystals by A. B. Zahlan Pdf

Author : Joel Bernstein
Publisher : International Union of Crystal
Page : 602 pages
File Size : 50,9 Mb
Release : 2020-05-14
Category : Science
ISBN : 9780199655441

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Polymorphism in Molecular Crystals 2e by Joel Bernstein Pdf

Most people are familiar with the fact that diamond and graphite are both composed only of carbon; yet they have very different properties which result from the very different structures of the two solids - they are polymorphs of carbon. Understanding the relationship between the structures and the properties of materials is of fundamental importance in developing and producing new materials with improved or new properties. The existence of polymorphic systems allows the direct study of the connection between structures and properties. This book provides grounding on the fundamental structural and energetic basis for polymorphism, the preparation and characterization of polymorphic substances and its importance in the specific areas of pharmaceuticals, pigments and high energy (explosive) materials. The closing chapter describes the intellectual property implications and some of the precedent patent litigations in which polymorphism has played a central role. The book contains over 2500 references to provide a ready entry into the relevant literature.

Author : V. Ramamurthy,Kirk S. Schanze
Publisher : CRC Press
Page : 360 pages
File Size : 47,8 Mb
Release : 1999-06-25
Category : Science
ISBN : 0824766067

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Organic Molecular Photochemistry by V. Ramamurthy,Kirk S. Schanze Pdf

Focuses on complex naturally occurring and synthetic supramolecular arrays. The text describes applications of photochemistry in cystalline organic matrices; covers two-component crystals - crystalline molecular compounds, mixed crystals and simple mechanical mixtures - in solid and liquid phases; assesses photoinduced fragmentation of carbon-heteroatom bonds; and more.

Author : Joel Bernstein
Publisher : Oxford University Press
Page : 429 pages
File Size : 42,6 Mb
Release : 2002
Category : Science
ISBN : 9780198506058

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Polymorphism in Molecular Crystals by Joel Bernstein Pdf

Polymorphism - the multiplicity of structures or forms - is a term that is used in many disciplines. In chemistry it refers to the existence of more than one crystal structure for a particular chemical substance. The properties of a substance are determined by its composition and by its structure. In the last two decades, there has been a sharp rise in the interest in polymorphic systems, as an intrinsically interesting phenomenon and as an increasingly important component in the development and marketing of a variety of materials based on organic molecules (e.g. pharmaceuticals, dyes and pigments, explosives, etc.). This book summarizes and brings up to date the current knowledge and understanding of polymorphism of molecular crystals, and concentrates it in one comprehensive source. The book will be an invaluable reference for students, researchers, and professionals in the field.

Author : Frank H. Herbstein
Publisher : Oxford University Press, USA
Page : 634 pages
File Size : 41,6 Mb
Release : 2005
Category : Science
ISBN : 0198568940

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Crystalline Molecular Complexes and Compounds by Frank H. Herbstein Pdf

This book provides an account of the structure and properties of crystalline binary adducts. Such crystals are perhaps better known as molecular compounds and complexes and are estimated to make up one quarter of the world's crystals. More than 600 figures, 200 tables and 3500 references are included in the book.

Author : O. Sild
Publisher : Elsevier
Page : 255 pages
File Size : 51,6 Mb
Release : 2017-01-31
Category : Science
ISBN : 9781483284750

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Molecular Spectroscopy—XI by O. Sild Pdf

Molecular Spectroscopy–XI provides information pertinent to the fundamental aspects of molecular spectroscopy. This book discusses the modifications of molecular spectra when the density varies as a function of temperature and pressure. Organized into 15 chapters, this book begins with an overview of the several processes concerning triplet excitons leading to magnetic-field sensitive luminescence in organic crystals and related compounds. This text then examines the methods of investigation of the exciton band structures in molecular crystals. Other chapters consider the conditions for the equivalence of Fourier spectroscopy and of slow passage experiments in nuclear magnetic resonance. This book discusses as well the application of computer technology in carbon-13 magnetic resonance spectroscopy. The final chapter deals with the application of high-resolution proton and carbon-13 n.m.r. spectroscopy for the investigation of the molecular conformations in proteins. This book is a valuable resource for organic chemists, biologists, microbiologists, scientists, and research workers.

Author : Edward Tiekink,Julio Zukerman-Schpector
Publisher : Walter de Gruyter GmbH & Co KG
Page : 362 pages
File Size : 40,5 Mb
Release : 2017-11-20
Category : Science
ISBN : 9783110464955

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Multi-Component Crystals by Edward Tiekink,Julio Zukerman-Schpector Pdf

In this volume, contributions covering the theoretical and practical aspects of multicomponent crystals provide a timely and contemporary overview of the state-of-the art of this vital aspect of crystal engineering/materials science. With a solid foundation in fundamentals, multi-component crystals can be formed, for example, to enhance pharmaceutical properties of drugs, for the specific control of optical responses to external stimuli and to assemble molecules to allow chemical reactions that are generally intractable following conventional methods. Contents Pharmaceutical co-crystals: crystal engineering and applications Pharmaceutical multi-component crystals: improving the efficacy of anti-tuberculous agents Qualitative and quantitative crystal engineering of multi-functional co-crystals Control of photochromism in N-salicylideneaniline by crystal engineering Quinoline derivatives for multi-component crystals: principles and applications N-oxides in multi-component crystals and in bottom-up synthesis and applications Multi-component crystals and non-ambient conditions Co-crystals for solid-state reactivity and thermal expansion Solution co-crystallisation and its applications The salt-co-crystal continuum in halogen-bonded systems Large horizontal displacements of benzene-benzene stacking interactions in co-crystals Simultaneous halogen and hydrogen bonding to carbonyl and thiocarbonylfunctionality Crystal chemistry of the isomeric N,N’-bis(pyridin-n-ylmethyl)-ethanediamides, n = 2, 3 or 4 Solute・solvent interactions mediated by main group element (lone-pair)・・・π(aryl) interactions

Author : Edward C. Lim
Publisher : Elsevier
Page : 414 pages
File Size : 47,9 Mb
Release : 2013-10-22
Category : Science
ISBN : 9781483275642

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Excited States by Edward C. Lim Pdf

Excited States, Volume 2 is a collection of papers that deals with molecules in the excited states. The book describes the geometries of molecules in the excited electronic states. One paper describes the geometries of a diatomic molecule and of polyatomic molecules; it also discusses the determination of the many excited state geometries of molecules with two, three, or four atoms by techniques similar to diatomic spectroscopy. Another paper introduces an ordered theory related to excitons in pure and mixed molecular crystals. This paper also presents some experimental data such as those involving pure and neat crystals, very dilute isotopic mixed crystals, and medium dilute isotopic mixed crystals. The book also discusses the dynamics of primary photochemical processes including the classical theory of unimolecular reactions, the quantum theory of molecular reactions, and the theory of "nonchemical" radiationless processes. One paper also reviews the electron donor-acceptor complexes in their excited states. This book is suitable for nuclear physicists and researchers whose work involves molecular chemistry and solid state physics.