Search Results for "transition-metal-compounds"

Transition Metal Compounds

Transition Metal Compounds

  • Author: Daniel I. Khomskii
  • Publisher: Cambridge University Press
  • ISBN: 1316060802
  • Category: Science
  • Page: N.A
  • View: 6580
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Describing all aspects of the physics of transition metal compounds, this book provides a comprehensive overview of this unique and diverse class of solids. Beginning with the basic concepts of the physics of strongly correlated electron systems, the structure of transition metal ions, and the behaviours of transition metal ions in crystals, it goes on to cover more advanced topics such as metal-insulator transitions, orbital ordering, and novel phenomena such as multiferroics, systems with oxygen holes, and high-Tc superconductivity. Each chapter concludes with a summary of key facts and concepts, presenting all the most important information in a consistent and concise manner. Set within a modern conceptual framework, and providing a complete treatment of the fundamental factors and mechanisms that determine the properties of transition metal compounds, this is an invaluable resource for graduate students, researchers and industrial practitioners in solid state physics and chemistry, materials science, and inorganic chemistry.

Spin Crossover in Transition Metal Compounds III

Spin Crossover in Transition Metal Compounds III

  • Author: Philipp Gütlich,Harold A. Goodwin
  • Publisher: Springer Science & Business Media
  • ISBN: 9783540403951
  • Category: Science
  • Page: 268
  • View: 5653
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With contributions by numerous experts

Electronic Structure and Properties of Transition Metal Compounds

Electronic Structure and Properties of Transition Metal Compounds

Introduction to the Theory

  • Author: Isaac B. Bersuker
  • Publisher: John Wiley & Sons
  • ISBN: 0470920858
  • Category: Science
  • Page: 759
  • View: 1116
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With more than 40% new and revised materials, this second edition offers researchers and students in the field a comprehensive understanding of fundamental molecular properties amidst cutting-edge applications. Including ~70 Example-Boxes and summary notes, questions, exercises, problem sets, and illustrations in each chapter, this publication is also suitable for use as a textbook for advanced undergraduate and graduate students. Novel material is introduced in description of multi-orbital chemical bonding, spectroscopic and magnetic properties, methods of electronic structure calculation, and quantum-classical modeling for organometallic and metallobiochemical systems. This is an excellent reference for chemists, researchers and teachers, and advanced undergraduate and graduate students in inorganic, coordination, and organometallic chemistry.

Magnetic Properties of Transition Metal Compounds

Magnetic Properties of Transition Metal Compounds

  • Author: R. L. Carlin,A. J. van Duyneveldt
  • Publisher: Springer Science & Business Media
  • ISBN: 3642873928
  • Category: Science
  • Page: 264
  • View: 2538
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This is a textbook of what is often called magnetochemistry. We take the point of view that magnetic phenomena are interesting because of what they tell us about chemical systems. Yet, we believe it is no longer tenable to write only about such subjects as distinguishing stereochemistry from the measurement of a magnetic susceptibility over a restricted temper ature region; that is, paramagnetism is so well-understood that little remains to explore which is of fundamental interest. The major purpose of this book is to direct chemists to some of the recent work of physicists, and in particular to a lengthy exposition of magnetic ordering phenomena. Chemists have long been interested in magnetic interactions in clusters, but many have shied away from long-range ordering phenomena. Now however more people are investigating magnetic behavior at temperatures in the liquid helium region, where ordering phenomena can scarcely be avoided. The emphasis is on complexes of the iron-series ions, for this is where most of the recent work, both experimental and theoretical, has been done. The discussion therefore is limited to insulating crystals; the nature of magnetism in metals and such materials as semiconductors is sufficiently different that a discussion of these substances is beyond our purposes. The book is directed more at the practical experimentalist than at the theoretician.

Magnetic Properties of Layered Transition Metal Compounds

Magnetic Properties of Layered Transition Metal Compounds

  • Author: L.J. de Jongh
  • Publisher: Springer Science & Business Media
  • ISBN: 9400918607
  • Category: Science
  • Page: 422
  • View: 2638
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In the last two decades low-dimensional (low-d) physics has matured into a major branch of science. Quite generally we may define a system with restricted dimensionality d as an object that is infinite only in one or two spatial directions (d = 1 and 2). Such a definition comprises isolated single chains or layers, but also fibres and thin layers (films) of varying but finite thickness. Clearly, a multitude of physical phenomena, notably in solid state physics, fall into these categories. As examples, we may mention: • Magnetic chains or layers (thin-film technology). • Metallic films (homogeneous or heterogeneous, crystalline, amorphous or microcristalline, etc.). • I-d or 2-d conductors and superconductors. • Intercalated systems. • 2-d electron gases (electrons on helium, semiconductor interfaces). • Surface layer problems (2-d melting of monolayers of noble gases on a substrate, surface problems in general). • Superfluid films of ~He or 'He. • Polymer physics. • Organic and inorganic chain conductors, superionic conductors. • I-d or 2-d molecular crystals and liquid crystals. • I-d or 2-d ferro- and antiferro electrics.

Electron Paramagnetic Resonance of d Transition Metal Compounds

Electron Paramagnetic Resonance of d Transition Metal Compounds

  • Author: F.E. Mabbs,D. Collison
  • Publisher: Elsevier
  • ISBN: 1483291499
  • Category: Science
  • Page: 1347
  • View: 988
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Electron paramagnetic resonance (epr) spectroscopy is a sensitive and versatile method of studying paramagnets, which is finding increasing use in chemistry, biochemistry, earth and materials sciences. The technique is treated both qualitatively and quantitatively, with a progressive increase in sophistication in each succeeding chapter. Following a general introductory chapter, the first half of the book deals with single unpaired electron systems and considers both metal and ligand Zeeman, hyperfine and quadrupole interactions. The simulation of these spectra is discussed, followed by the relationship between spin-Hamiltonian parameters and models of the electronic structures of paramagnets. The second half of the book treats multiple unpaired electron systems using the same philosophy. An introduction to the epr properties of cluster compounds and of extended exchanging systems is also given. There is a chapter on linewidths and lineshapes, and an extensive appendix containing much additional information. A wide-ranging library of simulated and experimental spectra is given, as well as graphical data which should aid spectrum interpretation. Each chapter contains key references and there is a substantial subject and keyword index. This book is designed to teach epr spectroscopy to students without any previous knowledge of the technique. However, it will also be extremely useful to researchers dealing with paramagnetic d transition metals.

Refractory transition metal valentinovich

Refractory transition metal valentinovich

  • Author: N.A
  • Publisher: N.A
  • ISBN: N.A
  • Category:
  • Page: N.A
  • View: 1107
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Transition-metal compounds

Transition-metal compounds

  • Author: R. Bruce King
  • Publisher: N.A
  • ISBN: N.A
  • Category: Science
  • Page: 186
  • View: 1124
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Structural Phase Transitions in Layered Transition Metal Compounds

Structural Phase Transitions in Layered Transition Metal Compounds

  • Author: K. Motizuki
  • Publisher: Springer Science & Business Media
  • ISBN: 9400945760
  • Category: Science
  • Page: 300
  • View: 6313
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The structural phase transition is one of the most fundamental problems in solid state physics. Layered transition-metal dichalcogenides provide us with a most exciting area for the study of structural phase transitions that are associated with the charge density wave (CDW). A large variety of structural phase transitions, such as commensurate and incommensurate transitions, and the physical proper ties related to the formation of a CDW, have been an object of intense study made for many years by methods employing modem microscopic techniques. Rather recently, efforts have been devoted to the theoretical understanding of these experimental results. Thus, McMillan, for example, has developed an elegant phenomenological theory on the basis of the Landau free energy expansion. An extension of McMillan's theory has provided a successful understanding of the successive phase transitions observed in the IT- and 2H-compounds. In addition, a microscopic theory of lattice instability, lattice dynamics, and lattice distortion in the CDW state of the transition-metal dichalcogenides has been developed based on their electronic structures. As a result, the driving force of the CDW formation in the IT- and 2H-compounds has become clear. Furthermore, the effect of lattice fluctuations on the CDW transition and on the anomalous behavior of various physical properties has been made clear microscopically.

Recent Advances in Magnetism of Transition Metal Compounds

Recent Advances in Magnetism of Transition Metal Compounds

Festschrift in Honour of Professor K Motizuki

  • Author: A Kotani,N Suzuki
  • Publisher: World Scientific
  • ISBN: 981455409X
  • Category:
  • Page: 392
  • View: 7618
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This book is a Festschrift in honour of Professor Kazuko Motizuki on the occasion of her retirement from Osaka University. She has been active in a variety of branches of solid state physics and, in particular, has made an important contribution to the theory of magnetism. The book reviews recent advances in magnetism of transition metal compounds, both for itinerant electron systems and localized spin systems. For the former systems, band calculational methods, correlation effects, and theoretical aspects of photoemission spectroscopy are reviewed generally, and then recent progress in the theoretical and experimental understanding of magnetic properties of various kinds of intermetallic compounds and intercalation compounds of transition-metal dichalcogenides are reviewed in detail. For the latter systems, attention is focused on quantum effects, frustration and competing interaction in low-dimensional systems. Main subjects treated in the book are Haldane gap-systems, singlet-ground-state systems, triangular spin systems, and quantum spin chains with competing interactions. Contents:Electronic Structures and Magnetism:Attempts to Go Beyond the Local-Spin-Density Approximation in the Density-Functional Formalism (K Terakura et al.)Electronic Structure and Magnetism of Laves Phase Compounds (H Yamada & M Aoki)Electronic Structure and Magnetism of Transition Metal Compunds (C Haas & R A de Groot)Magnetic Properties of Intermetallic Compounds of MnMX Systems (T Kanomata & T Kaneko)Electronic Structure of 3d Transition-Metal Chalcogenides Studied by Photoemission Spectroscopy (A Fujimori)Magnetic and Transport Properties of Transition-Metal Intercalation Compounds (M Inoue & H Negishi)Recent Results on Photoemission from TiSe2 and Related Compounds (F C Brown)Localized Spin Systems: Low-Dimensional Systems and Quantum Effects:High Field Magnetization and ESR Measurements in Haldane Gap Systems (M Date et al.)Nuclear Magnetic Relaxations in Singlet-Ground-State and Haldane-Gap Systems (T Goto)Phase Transitions in Triangular Spin Systems (H Kawamura)CsCuCl3 in High Magnetic Field: Role of Quantum Fluctuations (H Shiba & T Nikuni)and other papers Readership: Physicists and chemists. keywords:

Transition Metal and Rare Earth Compounds

Transition Metal and Rare Earth Compounds

Excited States, Transitions, Interactions I

  • Author: Hartmut Yersin,K.L. Bray
  • Publisher: Springer Science & Business Media
  • ISBN: 3540679863
  • Category: Science
  • Page: 186
  • View: 6162
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Transition metal and rare earth compounds are investigated intensively because of important questions concerning fundamental research problems. More recently also their enormous potential for the development of new materials for photophysical and photochemical applications has been explored. Thus, it is important to focus on a deeper understanding of the elctronic energies, transition prohabilities, intermolecular interactions, etc.. This task has been accomplished by leading researchers in the field. They present introductions into, but also detailed reviews of the current state of knowledge of three different subjects.

Organo-Transition Metal Compounds and Related Aspects of Homogeneous Catalysis

Organo-Transition Metal Compounds and Related Aspects of Homogeneous Catalysis

Pergamon Texts in Inorganic Chemistry

  • Author: B. L. Shaw,N. I. Tucker
  • Publisher: Elsevier
  • ISBN: 1483181715
  • Category: Science
  • Page: 229
  • View: 2731
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Organo-Transition Metal Compounds and Related Aspects of Homogeneous Catalysis covers compounds that possess carbon atoms bonded to metal and to other carbon atoms. The order in which the substances appear in the book is based on the number of carbon atoms it have. The first section is about the alkyl, aryl, ethynyl, acyl, and carbene complexes. The second section deals with olefin and chelating diolefin complexes and complexes formed from acetylene. The following section covers the π-allylic complexes. The structures, stability, and bonding of alkyl and aryl complexes are fully covered. The magnetic moments and electronic spectra are discussed in detail.The fourth section discusses the conjugated diolefinic complexes that contain butadiene or cyclobutadiene. The rest of the book focuses on cyclopentadienyls, arene complexes, tropylium complexes, and complexes formed from cyclo-octatetraene or azulene. The book will be a useful tool for chemists, chemical engineers, and students and researchers in the field of chemistry.

Refractory Transition Metal Compounds

Refractory Transition Metal Compounds

High Temperature Cermets

  • Author: G. V. Samsonov
  • Publisher: Elsevier
  • ISBN: 1483270831
  • Category: Science
  • Page: 228
  • View: 6622
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Refractory Transition Metal Compounds: High Temperature Cermets focuses on the properties, reactions, transformations, and characteristics of refractory compounds. The selection first offers information on continuous-discrete character of variation of the type of bonding in refractory compounds of transition metals, principles of classification of refractory compounds, and calculation of the energy of crystal lattices of inorganic compounds. The text also takes a look at the X-ray spectral investigation of chemical bonding forces in hydrides of refractory metals, using titanium and vanadium compounds as examples and comparison of X-ray K absorption spectra in compounds of chromium with elements of subgroup IV. The manuscript elaborates on the X-ray spectra and interatomic bond in solid metallic compounds and behavior of components of metal solid solutions in a field of electrical forces. The publication also examines the electrical properties of hexaborides of several rare earth metals and the thermionic emission properties of scandium gadolinium borides. The book is a dependable reference for readers wanting to study refractory compounds.

Organotransition Metal Chemistry A Mechanistic Approach

Organotransition Metal Chemistry A Mechanistic Approach

  • Author: Richard Heck
  • Publisher: Elsevier
  • ISBN: 0323154700
  • Category: Science
  • Page: 350
  • View: 2435
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Organotransition Metal Chemistry: A Mechanistic Approach describes a mechanistic approach to the study of the chemistry of organotransition metals. Organotransition metals are discussed in relation to their reactions with specific functional groups or types of compounds rather than by metals. Topics covered include the formation of hydrogen and carbon bonds to transition metals; reactions of transition metal δ- and π-bonded derivatives; and addition and elimination reactions of olefinic compounds. This book is comprised of 10 chapters and begins with a historical overview of organotransition metal chemistry, together with the unique chemistry of transition metals and mechanisms of ligand replacements. The following chapters discuss the methods of preparation of hydrido complexes and carbon-transition metal bonds; homogeneous hydrogenation reactions; isomerization, dimerization, oligomerization, and polymerization of olefins; and reactions of dienes, trienes, and tetraenes with transition metal compounds. Transition metal reactions with acetylenes and carbon monoxide as well as organic carbonyl compounds are also examined. This monograph should be of value to organic chemists as well as students and researchers of organic chemistry.

The superconductivity of zirconium-transition metal compounds having the CuA12-type structure

The superconductivity of zirconium-transition metal compounds having the CuA12-type structure

  • Author: Shaun Leaf McCarthy
  • Publisher: N.A
  • ISBN: N.A
  • Category: Superconductivity
  • Page: 238
  • View: 8344
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Optical and Heat Capacity Studies of Some Transition Metal Compounds

Optical and Heat Capacity Studies of Some Transition Metal Compounds

  • Author: John Anthony Benda
  • Publisher: N.A
  • ISBN: N.A
  • Category: Transition metal compounds
  • Page: 268
  • View: 7041
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Stereochemistry of optically active transition metal compounds

Stereochemistry of optically active transition metal compounds

based on a symposium at the ACS/CSJ chemical congress; Honolulu - H.I., April 2-6, 1979

  • Author: Bodie Eugene Douglas
  • Publisher: N.A
  • ISBN: 9780841205383
  • Category: Science
  • Page: 446
  • View: 8807
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Handbook of enantioselective catalysis with transition metal compounds

Handbook of enantioselective catalysis with transition metal compounds

  • Author: Henri Brunner,Wolfgang Zettlmeier
  • Publisher: Wiley-VCH Verlag GmbH
  • ISBN: 9783527290680
  • Category: Catalysis
  • Page: 259
  • View: 9575
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Enantioselective, transition-metal catalyzed reactions are of tremendous economic importance, since with a small amount of mediator, a large amount of optically active product becomes available. With this impressive handbook the reader has a complete compilation of enantioselective transition-metal catalyzed transformations at his fingertips. In Volume I ca 13000 optically active reactions, and all enantioselective transition-metal catalysts accumulated. Volume II details the catalysts themselves and contains in-depth literature coverage up to and including 1992. The inquiring scientist finds answers to the following questions: Which optically active compounds can be synthesized catalytically and how high is the enantiomeric excess? Which catalyst systems are available for a given transformation? Where in the literature will I find more detailed information? This handbook is an indispensable tool for organic, inorganic, organometallic, pharmaceutical, nutritional, agricultural and increasingly for polymer chemists both in applied and basic research.