The Nature Of Solvent Molecules In Iron Spin Crossover Complexes

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The Nature Of Solvent Molecules In Iron Spin Crossover Complexes

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Author : Kathryn M. Sena
language : en
Publisher:
Release Date : 1995

The Nature Of Solvent Molecules In Iron Spin Crossover Complexes written by Kathryn M. Sena and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.

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 Iron Ii And Cobalt Ii Complexes Including Multifunctional Materials

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Author : Hayley Sue Scott
language : en
Publisher:
Release Date : 2014

Spin Crossover In Iron Ii And Cobalt Ii Complexes Including Multifunctional Materials written by Hayley Sue Scott and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.

At the outset, the primary focus of this Ph.D. project has been directed towards the synthesis of new 2,2'-dipyridylamino(dpa)- and 1,2,4-triazole(trz)- based ligands to be incorporated into spin crossover (SCO) iron(II) complexes.Initial aims sought the synthesis of a wide and diverse range of SCO compounds containingnovel dpa- and trz-based ligands in order to determine what sort of control could be exercised over magnetic properties. New ligands synthesised for the project incorporated a range of nondpa- or trz-substituents with, for example, different capacities to participate in hydrogen bonding or aryl interactions (such as !-stacking), with different degrees of bulkiness, flexibility, or additional binding sites, for metals or other guests, that are distinct and separate from the dpa or trz coordination sites. This fundamental study also probed the influence of second coordination sphere entities, including the effects of solvation and counter ion species, upon the spin transition. Structure-function correlations for this work were vital to further the understanding of the factors influential in determining the magnetic properties of crystalline SCO compounds, by varying the nature of the ligand, solvent or counter-ion.As there is currently great interest in the study of multifunctional ('hybrid') molecular materials, a further aspect of this Ph.D. project was aimed towards the synthesis of ligands incorporating a moiety capable of a secondary function, in addition to SCO. This led to two main areas of study, the first of which consisted of the synthesis and coordination of a number of ferrocene-appended ligands and attempts have been made to analyse how one-electron changes at the ferrocene group (located external to the coordination site) influences the spin transition. This includes a system in which a new ferrocene-trz ligand and its 1-D polynuclear complexes were studied using magnetic, electrochemical and Mössbauer measurements (Chapter 6), as well as synthesis of discrete FeII and CoII complexes incorporating ferrocene-based ligands (Chapter 7).Our second approach at obtaining multifunctional SCO materials has led us to pursue the synthesis and coordination of crown-appended dpa-based ligands which have the potential to show, in addition to SCO, encapsulation of alkali metal ions in the aza-crown ether, which ideally would result in guest dependent magnetic properties. This work appears in Chapter 4.Throughout this study, where possible, all complexes have been comprehensively characterised, primarily using single crystal X-ray structural determination and variable temperature magneticsusceptibility measurements, although the vast array of complexes appearing in this thesis have been characterised using a number of other techniques including PXRD, Mössbauer spectroscopy, electrochemical studies, magnetic- and photo-magnetic measurements and to a lesser extent heat-capacity measurements.

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 Complexes

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Author : Kazuyuki Takahashi MDPI
language : en
Publisher: MDPI
Release Date : 2018-06-26

Spin Crossover Complexes written by Kazuyuki Takahashi MDPI and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-26 with Electronic books categories.

This book is a printed edition of the Special Issue "Spin-Crossover Complexes" that was published in Inorganics

Functional Molecular Materials

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Author : Matteo Atzori
language : en
Publisher: CRC Press
Release Date : 2018-04-17

Functional Molecular Materials written by Matteo Atzori and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-17 with Science categories.

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.

Icame 2005

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Author : P.-E. Lippens
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-12-10

Icame 2005 written by P.-E. Lippens 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 2007-12-10 with Science categories.

This book provides an up-to-date overview of the Mössbauer effect in physics, chemistry, electrochemistry, catalysis, biology, medicine, geology, mineralogy, archaeology and materials science. Coverage details the most recent developments of the technique especially in the fields of nanoparticles, thin films, surfaces, interfaces, magnetism, experimentation, theory, medical and industrial applications and Mars exploration.

Structural Studies Of Iron Ii Spin Crossover Compounds

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Author :
language : en
Publisher:
Release Date : 2004

Structural Studies Of Iron Ii Spin Crossover Compounds written by 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 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.

With contributions by numerous experts

Bulletin Of The Chemical Society Of Japan

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Author : Nihon Kagakkai
language : en
Publisher:
Release Date : 2007

Bulletin Of The Chemical Society Of Japan written by Nihon Kagakkai and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Chemistry categories.