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: 4638
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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.

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: 3772
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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.

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: 4628
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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.

Electronic structure of transition-metals and transition-metal compounds

Electronic structure of transition-metals and transition-metal compounds

  • Author: Sverre Froyen
  • Publisher: N.A
  • ISBN: N.A
  • Category: Science
  • Page: 170
  • View: 2804
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Organozinc-transition Metal Compounds

Organozinc-transition Metal Compounds

  • Author: Petrus Henricus Maria Budzelaar
  • Publisher: N.A
  • ISBN: N.A
  • Category:
  • Page: 186
  • View: 9139
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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: 8409
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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: 6501
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With contributions by numerous experts

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: 1501
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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.

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: 1499
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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: 4970
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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.

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: 7977
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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.

Transition Metal and Rare Earth Compounds III

Transition Metal and Rare Earth Compounds III

Excited States, Transitions, Interactions

  • Author: Hartmut Yersin
  • Publisher: Springer Science & Business Media
  • ISBN: 9783540209485
  • Category: Science
  • Page: 294
  • View: 1828
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With contribution by numerous experts

Spectral Methods in Transition Metal Complexes

Spectral Methods in Transition Metal Complexes

  • Author: K. Sridharan
  • Publisher: Elsevier
  • ISBN: 0128096543
  • Category: Science
  • Page: 202
  • View: 9597
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Spectral Methods in Transition Metal Complexes provides a conceptual understanding on how to interpret the optical UV-vis, vibrational EPR, and NMR spectroscopy of transition metal complexes. Metal complexes have broad applications across chemistry in the areas of drug discovery, such as anticancer drugs, sensors, special materials for specific requirements, and catalysis, so a thorough knowledge in preparation and characterization of metal complexes, while niche, is critical. Accessible to both the seasoned researcher and the graduate student alike, this book provides readers with a single source of content that addresses spectral methods in transition metal complexes. Provides readers with a single reference on metal complexes and coordination compounds Contains more than 100 figures, tables, and illustrations to aid in the retention of key concepts Authored by a scientist with nearly 40 years of experience in research and instruction

Refractory Transition Metal Compounds

Refractory Transition Metal Compounds

High Temperature Cermets

  • Author: G. V. Samsonov
  • Publisher: Elsevier
  • ISBN: 1483270831
  • Category: Science
  • Page: 228
  • View: 3738
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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.

Electronic spectra of transition metal complexes

Electronic spectra of transition metal complexes

an introductory text

  • Author: Derek Sutton
  • Publisher: N.A
  • ISBN: N.A
  • Category: Science
  • Page: 208
  • View: 1950
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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: 8106
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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:

Electronic and Vibronic Spectra of Transition Metal Complexes II

Electronic and Vibronic Spectra of Transition Metal Complexes II

  • Author: Hartmut Yersin
  • Publisher: Springer Science & Business Media
  • ISBN: 9783540629221
  • Category: Science
  • Page: 260
  • View: 7018
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The unique properties and applications of transition metal compounds have long fascinated both physicists and chemists. This volume presents theoretical and experimental studies for a deeper understanding of the electronic and vibronic properties of these compounds. In particular, an introduction into properties of spin sublevels of dd*, dÂ*, and ÂÂ* states is given, and a modern ligand field theory based on the Angular Overlap Model is presented. In experimental case studies it is shown how to characterize different types of electronic transitions using modern methods of laser spectroscopy. Consequences of spin-orbit coupling, zero-field splittings, spin-lattice relaxations, chromophore-matrix interactions, Herzberg-Teller/Franck-Condon activities, and localization/delocalization properties are treated.

Quantentheorie der Festkörper

Quantentheorie der Festkörper

  • Author: Charles Kittel,Chung Y. Fong
  • Publisher: N.A
  • ISBN: N.A
  • Category: Quantum theory
  • Page: 518
  • View: 2284
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Molecular Orbitals of Transition Metal Complexes

Molecular Orbitals of Transition Metal Complexes

  • Author: Yves Jean
  • Publisher: OUP Oxford
  • ISBN: 9780191513695
  • Category: Science
  • Page: 288
  • View: 2685
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This book starts with the most elementary ideas of molecular orbital theory and leads the reader progressively to an understanding of the electronic structure, geometry and, in some cases, reactivity of transition metal complexes. The qualitative orbital approach, based on simple notions such as symmetry, overlap and electronegativity, is the focus of the presentation and a substantial part of the book is associated with the mechanics of the assembly of molecular orbital diagrams. The first chapter recalls the basis for electron counting in transition metal complexes. The main ligand fields (octahedral, square planar, tetrahedral, etc.) are studied in the second chapter and the structure of the "d block" is used to trace the relationships between the electronic structure and the geometry of the complexes. The third chapter studies the change in analysis when the ligands have pi-type interactions with the metal. All these ideas are then used in the fourth chapter to study a series of selected applications of varying complexity (e.g. structure and reactivity). The fifth chapter deals with the "isolobal analogy" which points out the resemblance between the molecular orbitals of inorganic and organic species and provides a bridge between these two subfields of chemistry. The last chapter is devoted to a presentation of basic Group Theory with applications to some of the complexes studied in the earlier chapters.

Organic synthesis by means of transition metal complexes

Organic synthesis by means of transition metal complexes

a systematic approach

  • Author: Jiro Tsuji
  • Publisher: Springer
  • ISBN: N.A
  • Category: Science
  • Page: 199
  • View: 3544
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