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Author : Chuan-Liang Xie
Publisher :
ISBN 13 :
Total Pages : 654 pages
Book Rating : 4.:/5 (175 download)
Download or read book Dynamics and Mechanism of Spin-state Interconversion in Iron Spin-crossover Complexes written by Chuan-Liang Xie and published by . This book was released on 1987 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James Kenneth McCusker
Publisher :
ISBN 13 :
Total Pages : 1168 pages
Book Rating : 4.:/5 (279 download)
Download or read book Dynamics and Mechanism of Spin-state Interconversion in Transition Metal Complexes written by James Kenneth McCusker and published by . This book was released on 1992 with total page 1168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James Kenneth McCusker
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (774 download)
Download or read book Dynamics and Mechanism of Spin-state Interconversion in Transition Metal Complexes. (Volumes I and II) written by James Kenneth McCusker and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The kinetics of the $\Delta$S = 2 spin-state interconversion in d$\sp6$ transition metal complexes are examined. A series of compounds having a polypyridyl-based ligand framework are described which allow for systematic modification of molecular geometry. A nanosecond time-resolved laser spectrometer was constructed to measure the kinetics of spin-state interconversion as a function of temperature in an attempt to probe the molecular mechanism of $\rm\sp5T\sb2$ $\to$ $\rm\sp1A\sb1$ relaxation in Fe$\sp{\rm II}$ complexes. The data establish an empirical correlation between the flexibility of the ligand framework and the activation energy for the process, suggesting a smaller barrier to spin-state interconversion for those molecules having a greater tendency to distort along torsional coordinates. In addition, a correlation is noted that suggests conformational preferences of the ligand structure may influence the intrinsic rate of spin-state interconversion by modulating the extent to which a system proceeds along the reaction coordinate. The importance of torsional modes in controlling the kinetics of $\rm\sp5T\sb2$ $\to$ $\rm\sp1A\sb1$ relaxation is further supported by theoretical analyses. Fitting of variable-temperature kinetic data to classical, semi-classical, and quantum-mechanical theories of electron transfer give identical results, indicating that the quantum nature of the vibrational mode coupled to spin-state interconversion does not manifest itself in the 160-300 K range. This observation is inconsistent with coupling to a metal-ligand stretching mode and strongly suggests the involvement of low-frequency mode(s) $($10$\sp{12}$ s$\sp{-1}$ is interpreted in terms of direct $\rm\sp1MLCT$ $\to$ $\rm\sp5T\sb2$ conversion from the Franck-Condon state following excitation. The excited-state dynamics of several Co$\sp{\rm III}$ complexes are also discussed. The biphasic kinetics observed are attributed to decay from singlet and quintet ligand-field states, suggesting a $\sp1$LMCT state lifetime of $
Author : Kazuyuki Takahashi MDPI
Publisher : MDPI
ISBN 13 : 3038428256
Total Pages : 207 pages
Book Rating : 4.0/5 (384 download)
Download or read book Spin-Crossover Complexes written by Kazuyuki Takahashi MDPI and published by MDPI. This book was released on 2018-06-26 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Spin-Crossover Complexes" that was published in Inorganics
Author : Malcolm A. Halcrow
Publisher : John Wiley & Sons
ISBN 13 : 1118519310
Total Pages : 729 pages
Book Rating : 4.1/5 (185 download)
Download or read book Spin-Crossover Materials written by Malcolm A. Halcrow and published by John Wiley & Sons. This book was released on 2013-01-07 with total page 729 pages. Available in PDF, EPUB and Kindle. Book excerpt: The phenomenon of spin-crossover has a large impact on the physical properties of a solid material, including its colour, magnetic moment, and electrical resistance. Some materials also show a structural phase change during the transition. Several practical applications of spin-crossover materials have been demonstrated including display and memory devices, electrical and electroluminescent devices, and MRI contrast agents. Switchable liquid crystals, nanoparticles, and thin films of spin-crossover materials have also been achieved. Spin-Crossover Materials: Properties and Applications presents a comprehensivesurvey of recent developments in spin-crossover research, highlighting the multidisciplinary nature of this rapidly expanding field. Following an introductory chapter which describes the spin-crossover phenomenon and historical development of the field, the book goes on to cover a wide range of topics including Spin-crossover in mononuclear, polynuclear and polymeric complexes Structure: function relationships in molecular spin-crossover materials Charge-transfer-induced spin-transitions Reversible spin-pairing in crystalline organic radicals Spin-state switching in solution Spin-crossover compounds in multifunctional switchable materials and nanotechnology Physical and theoretical methods for studying spin-crossover materials Spin-Crossover Materials: Properties and Applications is a valuable resource for academic researchers working in the field of spin-crossover materials and topics related to crystal engineering, solid state chemistry and physics, and molecular materials. Postgraduate students will also find this book useful as a comprehensive introduction to the field.
Author : Marcel Swart
Publisher : John Wiley & Sons
ISBN 13 : 1118898311
Total Pages : 500 pages
Book Rating : 4.1/5 (188 download)
Download or read book Spin States in Biochemistry and Inorganic Chemistry written by Marcel Swart and published by John Wiley & Sons. This book was released on 2015-12-14 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has long been recognized that metal spin states play a central role in the reactivity of important biomolecules, in industrial catalysis and in spin crossover compounds. As the fields of inorganic chemistry and catalysis move towards the use of cheap, non-toxic first row transition metals, it is essential to understand the important role of spin states in influencing molecular structure, bonding and reactivity. Spin States in Biochemistry and Inorganic Chemistry provides a complete picture on the importance of spin states for reactivity in biochemistry and inorganic chemistry, presenting both theoretical and experimental perspectives. The successes and pitfalls of theoretical methods such as DFT, ligand-field theory and coupled cluster theory are discussed, and these methods are applied in studies throughout the book. Important spectroscopic techniques to determine spin states in transition metal complexes and proteins are explained, and the use of NMR for the analysis of spin densities is described. Topics covered include: DFT and ab initio wavefunction approaches to spin states Experimental techniques for determining spin states Molecular discovery in spin crossover Multiple spin state scenarios in organometallic reactivity and gas phase reactions Transition-metal complexes involving redox non-innocent ligands Polynuclear iron sulfur clusters Molecular magnetism NMR analysis of spin densities This book is a valuable reference for researchers working in bioinorganic and inorganic chemistry, computational chemistry, organometallic chemistry, catalysis, spin-crossover materials, materials science, biophysics and pharmaceutical chemistry.
Author : G. J. Ferraudi
Publisher : Wiley-Interscience
ISBN 13 :
Total Pages : 280 pages
Book Rating : 4.F/5 ( download)
Download or read book Elements of Inorganic Photochemistry written by G. J. Ferraudi and published by Wiley-Interscience. This book was released on 1988-02-22 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph/reference focuses on those subjects that are considered essential to an understanding of inorganic photochemistry. Graduate students with a background in physical chemistry will find that the quantum mechanical treatments related to the principles of spectroscopy and chemical dynamics are readily accessible. And professionals will find that the tabulated data, equations, and general information makes this book an essential complement to the journal literature required in the daily planning of photochemical work. Chapters cover the nature of light and the uncertainty principle, detection of intermediates, elements of inorganic spectroscopy, kinetics of photoluminescence, photoredox reactions, ligand field photochemistry, and elements of organometallic photochemistry. Extensive appendixes cover physical constants and conversion factors for photochemical work, character tables for symmetry groups, vibrational motions, description of the chemical bonding in coordination complexes, charge transfer transitions, and Born cycles related to charge transfer processes.
Author : Ewa Broclawik
Publisher : Springer
ISBN 13 : 3030117146
Total Pages : 532 pages
Book Rating : 4.0/5 (31 download)
Download or read book Transition Metals in Coordination Environments written by Ewa Broclawik and published by Springer. This book was released on 2019-03-16 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the electronic properties of transition metals in coordination environments. These properties are responsible for the unique and intricate activity of transition metal sites in bio- and inorganic catalysis, but also pose challenges for both theoretical and experimental studies. Written by an international group of recognized experts, the book reviews recent advances in computational modeling and discusses their interplay using experiments. It covers a broad range of topics, including advanced computational methods for transition metal systems; spectroscopic, electrochemical and catalytic properties of transition metals in coordination environments; metalloenzymes and biomimetic compounds; and spin-related phenomena. As such, the book offers an invaluable resource for all researchers and postgraduate students interested in both fundamental and application-oriented research in the field of transition metal systems.
Author : Takafumi Kitazawa
Publisher : MDPI
ISBN 13 : 303921361X
Total Pages : 254 pages
Book Rating : 4.0/5 (392 download)
Download or read book Synthesis and Applications of New Spin Crossover Compounds written by Takafumi Kitazawa and published by MDPI. This book was released on 2019-10-11 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: The crystal chemistry of spin crossover (SCO) behavior in coordination compounds can potentially be in association with smart materials—promising materials for applications as components of memory devices, displays, sensors and mechanical devices and, especially, actuators, such as artificial muscles. This Special Issue is devoted to various aspects of SCO and related research, comprising 18 interesting original papers on valuable and important SCO topics. Significant and fundamental scientific attention has been focused on the SCO phenomena in a wide research range of fields of fundamental chemical and physical and related sciences, containing the interdisciplinary regions of chemical and physical sciences related to the SCO phenomena. Coordination materials with bistable systems between the LS and the HS states are usually triggered by external stimuli, such as temperature, light, pressure, guest molecule inclusion, soft X-ray, and nuclear decay. Since the first Hofmann-like spin crossover (SCO) behavior in {Fe(py)2[Ni(CN)4]}n (py = pyridine) was demonstrated, this crystal chemistry motif has been frequently used to design Fe(II) SCO materials to enable determination of the correlations between structural features and magnetic properties.
Author : Matteo Atzori
Publisher : CRC Press
ISBN 13 : 1351233645
Total Pages : 351 pages
Book Rating : 4.3/5 (512 download)
Download or read book Functional Molecular Materials written by Matteo Atzori and published by CRC Press. This book was released on 2018-04-17 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of molecular materials represents an exciting playground for the design, tailoring, and combination of chemical building blocks as carriers of physical properties and aims at the understanding and development of novel functional molecular devices. Within this extraordinarily widespread framework, the realization of materials with the desired functionalities can only be achieved through a rational design strategy based on a solid understanding of the chemical and physical features of each constituting building block. This book provides a general overview of molecular materials, discussing their key features in a simple and organic way by focusing more on basic concepts rather than on specialized descriptions, in order to supply the non-expert reader with the immediate fundamental tools and hints to understand and develop research in this field. With this view, it is a step-by-step guide toward the preparation of functional molecular materials, where the knowledge and understanding so far attained by the scientific community through the investigation of significant archetypical examples is deconstructed down to the fundamental basis and then presented in reverse, from the base to the top.
Author : Philipp Gütlich
Publisher : Springer Science & Business Media
ISBN 13 : 9783540403951
Total Pages : 294 pages
Book Rating : 4.4/5 (39 download)
Download or read book Spin Crossover in Transition Metal Compounds III written by Philipp Gütlich and published by Springer Science & Business Media. This book was released on 2004-08-17 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: C. Brady, J.J. McGarvey, J.K. McCusker, H. Toftlund, D.N. Hendrickson: Time-Resolved Relaxation Studies of Spin Crossover Systems in Solution.- V. Ksenofontov, P. Gütlich et al.: Spin Crossover under Pressure.- A. Bousseksou, F. Varret, M. Goiran, K. Boukheddaden, J.P. Tuchagues: The Spin Crossover Phenomenon under High Magnetic Field.- J.-P. Tuchagues, A. Bousseksou, G. Molnár, J.J. McGarvey, F. Varret: The Role of Molecular Vibrations in the Spin Crossover Phenomenon.- W. Linert, M. Grunert, A.B. Koudriavtsev: Isokinetic and Isoequilibrium Relationships in Spin Crossover Systems.- H. Winkler, A.I: Chumakov, A.X. Trautwein: Nuclear Resonant Forward and Nuclear Inelastic Scattering Using Synchrotron Radiation for Spin Crossover Systems.- M. Sorai: Heat Capacity Studies of Spin Crossover Systems.- H. Spiering et al.: Cooperative Elastic Interactions in Spin Crossover Systems.- H. Paulsen, A.X. Trautwein: Density Functional Theory Calculations for Spin Crossover Complexes.- J.-F. Létard, P. Guionneau, L. Goux-Capes: Towards Spin Crossover Applications.
Author : Philipp Gütlich
Publisher : Springer Science & Business Media
ISBN 13 : 9783540403944
Total Pages : 640 pages
Book Rating : 4.4/5 (39 download)
Download or read book Spin Crossover in Transition Metal Compounds I written by Philipp Gütlich and published by Springer Science & Business Media. This book was released on 2004-05-12 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts
Author : American Chemical Society. Meeting
Publisher :
ISBN 13 :
Total Pages : 1520 pages
Book Rating : 4.:/5 (45 download)
Download or read book Book of Abstracts written by American Chemical Society. Meeting and published by . This book was released on 1987 with total page 1520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Duncan W. Bruce
Publisher : John Wiley & Sons
ISBN 13 : 1119972957
Total Pages : 455 pages
Book Rating : 4.1/5 (199 download)
Download or read book Molecular Materials written by Duncan W. Bruce and published by John Wiley & Sons. This book was released on 2011-04-04 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: “... the book does an excellent job of putting together several different classes of materials. Many common points emerge, and the book may facilitate the development of hybrids in which the qualities of the “parents” are enhanced.” –Angew. Chem. Int. Ed. 2011 With applications in optoelectronics and photonics, quantum information processing, nanotechnology and data storage, molecular materials enrich our daily lives in countless ways. These materials have properties that depend on their exact structure, the degree of order in the way the molecules are aligned and their crystalline nature. Small, delicate changes in molecular structure can totally alter the properties of the material in bulk. There has been increasing emphasis on functional metal complexes that demonstrate a wide range of physical phenomena. Molecular Materials represents the diversity of the area, encapsulating magnetic, optical and electrical properties, with chapters on: Metal-Based Quadratic Nonlinear Optical Materials Physical Properties of Metallomesogens Molecular Magnetic Materials Molecular Inorganic Conductors and Superconductors Molecular Nanomagnets Structured to include a clear introduction, a discussion of the basic concepts and up-to-date coverage of key aspects, each chapter provides a detailed review which conveys the excitement of work in that field. Additional volumes in the Inorganic Materials Series: Low-Dimensional Solids | Molecular Materials | Porous Materials | Energy Materials
Author : Bruce J Berne
Publisher : World Scientific
ISBN 13 : 9814496057
Total Pages : 881 pages
Book Rating : 4.8/5 (144 download)
Download or read book Classical And Quantum Dynamics In Condensed Phase Simulations: Proceedings Of The International School Of Physics written by Bruce J Berne and published by World Scientific. This book was released on 1998-06-17 with total page 881 pages. Available in PDF, EPUB and Kindle. Book excerpt: The school held at Villa Marigola, Lerici, Italy, in July 1997 was very much an educational experiment aimed not just at teaching a new generation of students the latest developments in computer simulation methods and theory, but also at bringing together researchers from the condensed matter computer simulation community, the biophysical chemistry community and the quantum dynamics community to confront the shared problem: the development of methods to treat the dynamics of quantum condensed phase systems.This volume collects the lectures delivered there. Due to the focus of the school, the contributions divide along natural lines into two broad groups: (1) the most sophisticated forms of the art of computer simulation, including biased phase space sampling schemes, methods which address the multiplicity of time scales in condensed phase problems, and static equilibrium methods for treating quantum systems; (2) the contributions on quantum dynamics, including methods for mixing quantum and classical dynamics in condensed phase simulations and methods capable of treating all degrees of freedom quantum-mechanically.
Author : Sadamichi Maekawa
Publisher : Oxford University Press
ISBN 13 : 0198787073
Total Pages : 541 pages
Book Rating : 4.1/5 (987 download)
Download or read book Spin Current written by Sadamichi Maekawa and published by Oxford University Press. This book was released on 2017 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a new branch of physics and technology, called spin-electronics or spintronics, the flow of electrical charge (usual current) as well as the flow of electron spin, the so-called "spin current", are manipulated and controlled together. This book is intended to provide an introduction and guide to the new physics and applications of spin current.
Author :
Publisher :
ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.:/5 (912 download)
Download or read book Structural Studies of Iron (II) Spin Crossover Compounds written by and published by . This book was released on 2004 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
