Syntheses, Structures and Properties of FeIII-LnIII Complexes using N-substituted Diethanolamine Ligands PDF Download
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Author: Sihuai Chen
Publisher: Cuvillier Verlag
ISBN: 3736948808
Category : Science
Languages : en
Pages : 163
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Book Description
In this thesis, N-substituted diethanolamine ligands have been employed in the syntheses of heterometallic FeIII-LnIII clusters. The reactions of a preformed [FeIII3O]7+ benzoate triangle, LnIII salts and the ligands in different solvents under normal or solvothermal conditions lead to several mixed FeIII-LnIII species with different topologies. Furthermore, new species stabilized under solvothermal conditions can be obtained via a solvothermal treatment of the FeIII-LnIII compounds which result from reactions conducted under normal conditions. The resulting compounds were structurally analyzed by single-crystal X-ray crystallography and X-ray powder diffraction. The magnetic properties and spectroscopic studies were investigated using magnetic susceptibility measurements and Mössbauer spectroscopy. Magnetic studies reveal that three analogous hexanuclear {FeIII4DyIII2} compounds as well as a {FeIII7DyIII4} compound display single molecule magnet behavior.
Author: Sihuai Chen
Publisher: Cuvillier Verlag
ISBN: 3736948808
Category : Science
Languages : en
Pages : 163
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Book Description
In this thesis, N-substituted diethanolamine ligands have been employed in the syntheses of heterometallic FeIII-LnIII clusters. The reactions of a preformed [FeIII3O]7+ benzoate triangle, LnIII salts and the ligands in different solvents under normal or solvothermal conditions lead to several mixed FeIII-LnIII species with different topologies. Furthermore, new species stabilized under solvothermal conditions can be obtained via a solvothermal treatment of the FeIII-LnIII compounds which result from reactions conducted under normal conditions. The resulting compounds were structurally analyzed by single-crystal X-ray crystallography and X-ray powder diffraction. The magnetic properties and spectroscopic studies were investigated using magnetic susceptibility measurements and Mössbauer spectroscopy. Magnetic studies reveal that three analogous hexanuclear {FeIII4DyIII2} compounds as well as a {FeIII7DyIII4} compound display single molecule magnet behavior.
Author: Zhiping Zheng
Publisher: Springer
ISBN: 3662533030
Category : Science
Languages : en
Pages : 343
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Book Description
Chemical structure and bonding. The scope of the series spans the entire Periodic Table and addresses structure and bonding issues associated with all of the elements. It also focuses attention on new and developing areas of modern structural and theoretical chemistry such as nanostructures, molecular electronics, designed molecular solids, surfaces, metal clusters and supramolecular structures. Physical and spectroscopic techniques used to determine, examine and model structures fall within the purview of Structure and Bonding to the extent that the focus is on the scientific results obtained and not on specialist information concerning the techniques themselves. Issues associated with the development of bonding models and generalizations that illuminate the reactivity pathways and rates of chemical processes are also relevant. The individual volumes in the series are thematic. The goal of each volume is to give the reader, whether at a university or in industry, a comprehensive overview of an area where new insights are emerging that are of interest to a larger scientific audience.
Author: Dante Gatteschi
Publisher: OUP Oxford
ISBN: 0191620858
Category : Science
Languages : en
Pages : 502
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Book Description
Nanomagnetism is a rapidly expanding area of research which appears to be able to provide novel applications. Magnetic molecules are at the very bottom of the possible size of nanomagnets and they provide a unique opportunity to observe the coexistence of classical and quantum properties. The discovery in the early 90's that a cluster comprising twelve manganese ions shows hysteresis of molecular origin, and later proved evidence of quantum effects, opened a new research area which is still flourishing through the collaboration of chemists and physicists. This book is the first attempt to cover in detail the new area of molecular nanomagnetism, for which no other book is available. In fact research and review articles, and book chapters are the only tools available for newcomers and the experts in the field. It is written by the chemists originators and by a theorist who has been one of the protagonists of the development of the field, and is explicitly addressed to an audience of chemists and physicists, aiming to use a language suitable for the two communities.
Author: Jinkui Tang
Publisher: Springer
ISBN: 9783662514849
Category : Science
Languages : en
Pages : 0
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Book Description
This book begins by providing basic information on single-molecule magnets (SMMs), covering the magnetism of lanthanide, the characterization and relaxation dynamics of SMMs and advanced means of studying lanthanide SMMs. It then systematically introduces lanthanide SMMs ranging from mononuclear and dinuclear to polynuclear complexes, classifying them and highlighting those SMMs with high barrier and blocking temperatures – an approach that provides some very valuable indicators for the structural features needed to optimize the contribution of an Ising type spin to a molecular magnet. The final chapter presents some of the newest developments in the lanthanide SMM field, such as the design of multifunctional and stimuli-responsive magnetic materials as well as the anchoring and organization of the SMMs on surfaces. In addition, the crystal structure and magnetic data are clearly presented with a wealth of illustrations in each chapter, helping newcomers and experts alike to better grasp ongoing trends and explore new directions. Jinkui Tang is a professor at Changchun Institute of Applied Chemistry, Chinese Academy of Sciences. Peng Zhang is currently pursuing his PhD at Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, with a specific focus on the molecular magnetism of lanthanide compounds under the supervision of Prof. Jinkui Tang.
Author: Song Gao
Publisher: Springer
ISBN: 3662457237
Category : Science
Languages : en
Pages : 468
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Book Description
The series Structure and Bonding publishes critical reviews on topics of research concerned with chemical structure and bonding. The scope of the series spans the entire Periodic Table and addresses structure and bonding issues associated with all of the elements. It also focuses attention on new and developing areas of modern structural and theoretical chemistry such as nanostructures, molecular electronics, designed molecular solids, surfaces, metal clusters and supramolecular structures. Physical and spectroscopic techniques used to determine, examine and model structures fall within the purview of Structure and Bonding to the extent that the focus is on the scientific results obtained and not on specialist information concerning the techniques themselves. Issues associated with the development of bonding models and generalizations that illuminate the reactivity pathways and rates of chemical processes are also relevant. The individual volumes in the series are thematic. The goal of each volume is to give the reader, whether at a university or in industry, a comprehensive overview of an area where new insights are emerging that are of interest to a larger scientific audience. Thus each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years should be presented using selected examples to illustrate the principles discussed. A description of the physical basis of the experimental techniques that have been used to provide the primary data may also be appropriate, if it has not been covered in detail elsewhere. The coverage need not be exhaustive in data, but should rather be conceptual, concentrating on the new principles being developed that will allow the reader, who is not a specialist in the area covered, to understand the data presented. Discussion of possible future research directions in the area is welcomed. Review articles for the individual volumes are invited by the volume editors. Readership: research scientists at universities or in industry, graduate students Special offer for all customers who have a standing order to the print version of Structure and Bonding, we offer free access to the electronic volumes of the Series published in the current year via SpringerLink.
Author: Abraham Clearfield
Publisher: Royal Society of Chemistry
ISBN: 1849733562
Category : Science
Languages : en
Pages : 676
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Book Description
Here is the first book to describe the state of the art in the interdisciplinary field of metal phosphonate chemistry, aimed at academic and industrial researchers.
Author: Leon Gunther
Publisher: Springer Science & Business Media
ISBN: 9401104034
Category : Science
Languages : en
Pages : 503
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Book Description
The first NATO Advanced Workshop on Quantum Tunneling of Magnetization (QTM) was organized and co-directed by Bernard Barbara, Leon Gunther, Nicolas Garcia, and Anthony Leggett and was held from June, 27 through July 1, 1994 in Grenoble and Chichilianne, France. These Proceedings include twenty-nine articles that represent the contributions of the participants in the Workshop. Quantum Tunneling of Magnetization is not only interesting for purely academic reasons. It was pointed out in the review article by L. Gunther in the December, 1990 issue of Physics World, that QTM may be destined to play a significant role within the next two decades in limiting the density of information storage in magnetic systems. Recent advances have indicated that this limitation may well be reached even earlier than first predicted. Furthermore, the number of people who have entered the field of study of QTM during these past few years has increased many fi)ld. The time was therefore opportune to hold a Workshop to bring together for the first time the leading researchers of QTM, both theoretical and experimental, so as to discuss the current status of the field. The most controversial issue at the time of the Workshop was how to establish r.eliable criteria for determining whether experimental results do indeed reveal manifestations of QTM. We believe that much progress was made at the Workshop on this issue.
Author: Lahcene Ouahab
Publisher: CRC Press
ISBN: 9814364304
Category : Medical
Languages : en
Pages : 307
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Book Description
This book provides a comprehensive overview on multifunctional molecular materials that involve coexistence or interplay or synergy between multiple physical properties focusing on electrical conductivity, magnetism, single-molecule magnets behavior, chirality, spin crossover, and luminescence. The book's coverage ranges from transition metals and
Author:
Publisher: Elsevier
ISBN: 0128138416
Category : Technology & Engineering
Languages : en
Pages : 492
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Book Description
Lanthanide-Based Multifunctional Materials: From OLEDs to SIMs serves as a comprehensive and state-of the art review on these promising compounds, delivering a panorama of their extensive and rapidly growing applications. After an introductory chapter on the theoretical description of the optical and magnetic behaviour of lanthanides and on the prediction of their properties by ab-initio methods, four chapters are devoted to lanthanide-based OLEDs, including the latest trends in visible emitters, the emerging field of near infrared emitters and the first achievements attained in the field of chiral OLEDs. The use of lanthanide complexes as molecular magnets spreads over another two chapters, which explain the evolution of 4f-elements-based SIMs and the most recent advances in heterometallic 3d–4f SMMs. Other very active research areas are covered in the remaining five chapters, dedicated to lanthanide-doped germanate and tellurite glasses, luminescent materials for up-conversion, luminescent thermosensors, multimodal imaging and therapeutic agents, and chemosensors. The book is aimed at academic and industrial researchers, undergraduates and postgraduates alike, and is of particular interest for the Materials Science, Applied Physics and Applied Chemistry communities. - Includes the latest progress on lanthanide-based materials and their applications (in OLEDs, SIMs, doped matrices, up-conversion, thermosensors, theragnostics and chemosensors) - Presents basic and applied aspects of the Physics and Chemistry of lanthanide compounds, as well as future lines of action - Covers successful examples of devices and proofs-of-concept and provides guidelines for the rational design of new materials
Author: Cristiano Benelli
Publisher: John Wiley & Sons
ISBN: 3527335404
Category : Science
Languages : en
Pages : 464
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Book Description
This first introduction to the rapidly growing field of molecular magnetism is written with Masters and PhD students in mind, while postdocs and other newcomers will also find it an extremely useful guide. Adopting a clear didactic approach, the authors cover the fundamental concepts, providing many examples and give an overview of the most important techniques and key applications. Although the focus is one lanthanide ions, thus reflecting the current research in the field, the principles and the methods equally apply to other systems. The result is an excellent textbook from both a scientific and pedagogic point of view.
