Structural Studies Of Iron Ii Spin Crossover Compounds

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Structural Studies Of Iron Ii Spin Crossover Compounds

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Author : Victoria A. Money
language : en
Publisher:
Release Date : 2004

Structural Studies Of Iron Ii Spin Crossover Compounds written by Victoria A. Money and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

Spin Crossover In Transition Metal Compounds Ii

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Author : Philipp Gütlich
language : en
Publisher: Springer Science & Business Media
Release Date : 2004-07-23

Spin Crossover In Transition Metal Compounds Ii written by Philipp Gütlich and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-07-23 with Science categories.

Table of contents C.N.R. Rao, M.M. Seikh, C. Narayana: Spin-State Transition in LaCoO3 and Related Materials .- H.A. Goodwin: Spin Crossover in Cobalt(II) Systems .- Y. Garcia, P.G tlich: Thermal Spin Crossover in Mn(II), Mn(III) Cr(II) and Co(III) Coordination Compounds .- D.N. Hendrickson, C.G. Pierpont: Valence Tautomeric Transition Metal Complexes .- P. Guionneau, M. Marchivie, G.Bravic, J.-F. Letard, D. Chasseau: Structural Aspects of Spin Crossover. Example of the [Fe(II)Ln(NCS)2] Complexes .- J. Kusz, P. G tlich, H. Spiering: Structural Investigations of Tetrazole Complexes of Iron(II) .- A. Hauser: Light-Induced Spin Crossover and the High-Spin Low-Spin Relaxation .- F. Varret, K. Boukheddaden, E. Codjovi, C. Enachescu, J. Linar s: On the Competition Between Relaxation and Photoexcitations in Spin Crossover Solids under Continuous Irradiation .- P. G tlich: Nuclear Decay Induced Excited Spin State Trapping (NIESST) .- M.-L. Boillot, J. Zarembowitch, A. Sour: Ligand-Driven Light-Induced Spin Change (LD-LISC): A Promising Photomagnetic Effect

Spin Crossover Materials

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Author : Malcolm A. Halcrow
language : en
Publisher: John Wiley & Sons
Release Date : 2013-01-07

Spin Crossover Materials written by Malcolm A. Halcrow and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-01-07 with Science categories.

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.

Spin Crossover In Transition Metal Compounds Iii

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Author : Philipp Gütlich
language : en
Publisher: Springer Science & Business Media
Release Date : 2004-08-17

Spin Crossover In Transition Metal Compounds Iii written by Philipp Gütlich and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-08-17 with Science categories.

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.

Spin Crossover Under Extreme Conditions

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Author : Helena Jane Shepherd
language : en
Publisher:
Release Date : 2009

Spin Crossover Under Extreme Conditions written by Helena Jane Shepherd and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Crystallography categories.

Structural studies of several iron complexes that show spin crossover (SCO) properties are presented and intrinsic links between the structure and properties have been established for these systems. X-ray diffraction experiments of samples under extremes of temperature and pressure and after irradiation with laser light have been performed to characterise the structure of these various compounds. The incomplete thermal SCO observed in the dinuclear species [Fe(bbp)(NCS)22 4,4?- bipy]?2MeOH has been investigated, revealing a complex series of crystallographic phase transitions that result in a material with a mixture of high spin (HS) and low spin (LS) states that displays long-range order at low temperature. The meta-stable high spin (HS*) state that arises as a result of the Light Induced Excited Spin State Trapping (LIESST) effect has also been structurally characterised at 30 K. Further single crystal X-ray diffraction experiments at high pressure have shown that it is possible to achieve a complete spin transition to a fully LS state, which is not thermally accessible. Another species that shows crystallographic ordering of mixed spin states is an FeIII complex with a hexadentate Schiff base ligand, which has been studied using both single crystal and powder diffraction techniques. The structure of the photo-induced HS* state of [Fe(bapbpy) NCS)2] has been determined at 30 K from diffraction data which comprise contributions from both the HS* state and the residual LS component of the crystal, which is non-merrohedrally twinned. The structure of [Fe(picen)(NCS)2] has been determined at 30 K after a range of cooling speeds, showing that cooling of the sample results in partial population of the HS* state. The photo-induced HS* state, and that induced by thermal trapping are shown to be structurally similar. A gradual spin transition has been identified purely from structural analysis in an FeII complex with a hexadentate N6-donating ligand. The gradual nature of the spin transition may be attributed to the poor cooperativiy observed between iron centres. This study shows how structural features can be used to gain insights into some of the more unusual aspects of the SCO phenomenon such as stepped spin transitions, ordered mixed spin intermediate phases, trapping of meta-stable states as a result of light irradiation or temperature and pressure-induced spin transitions.

Synthesis And Applications Of New Spin Crossover Compounds

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Author : Takafumi Kitazawa
language : en
Publisher: MDPI
Release Date : 2019-10-11

Synthesis And Applications Of New Spin Crossover Compounds written by Takafumi Kitazawa and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-10-11 with Science categories.

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.

Studies Of Iron Ii And Iron Iii Spin Crossover Compounds

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Author : Ruth Pritchard
language : en
Publisher:
Release Date : 2008

Studies Of Iron Ii And Iron Iii Spin Crossover Compounds written by Ruth Pritchard and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.

Spin States In Biochemistry And Inorganic Chemistry

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Author : Marcel Swart
language : en
Publisher: John Wiley & Sons
Release Date : 2015-09-22

Spin States In Biochemistry And Inorganic Chemistry written by Marcel Swart and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-09-22 with Science categories.

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.

Spin Crossover In Transition Metal Compounds I

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Author : Philipp Gütlich
language : en
Publisher: Springer Science & Business Media
Release Date : 2004-05-12

Spin Crossover In Transition Metal Compounds I written by Philipp Gütlich and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-05-12 with Science categories.

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Spin Crossover In Transition Metal Compounds Ii

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Author : Philipp Gütlich
language : en
Publisher: Springer
Release Date : 2010-12-01

Spin Crossover In Transition Metal Compounds Ii written by Philipp Gütlich and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-12-01 with Science categories.