Synthesis Of Chiral Rare Earth And Alkaline Earth Compounds
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Synthesis Of Chiral Rare Earth And Alkaline Earth Compounds
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Author : Meng He
language : en
Publisher: Cuvillier Verlag
Release Date : 2016-08-16
Synthesis Of Chiral Rare Earth And Alkaline Earth Compounds written by Meng He and has been published by Cuvillier Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-16 with Science categories.
The first chiral amidinate borohydride rare earth compounds and compounds based on (S)-HPEBA ((S,S)-N,N-bis-(1-phenylethyl)benzamidine) ligand were reported by Roesky et al. To continuing this work, the new chiral ligand (S)-HNEBA ((S,S)-N,N-bis-(1-naphthylethyl)benzamidine) were synthesized. The corresponding amidinate metal complexes were successfully obtained by amine elimination. The luminescent and magnetic properties of rare earth compounds were studied. Alkaline earth metal compounds have been extensively studied as catalysts in synthetic chemistry. However, chiral amidinate alkaline earth metal complexes have never been reported. Chiral amidinate ligand (S)-HPEBA was introduced into the coordination chemistry of the alkaline earth metal as well as divalent lanthanides, their catalytic activities in hydrophosphination have been investigated. The Ba compound showed high catalytic activities in the hydrophosphination reaction. Moreover, since rare earth metal COT complexes exhibit excellent SMM behavior, it is of great interest to study the magnetic behavior of COT amidinate complexes. Thus, amidine ligand (S)-HPEBA and (S)-HPETA are introduced into the corresponding COT amidinate complexes for magnetic properties studies. The Er Compound exhibited typical field-induced SMM behavior. Furthermore, inspired by the promising application of lanthanide SMMs and the research of SMMs based on sandwich type lanthanide complexes, a series of novel sandwich type complexes comprising of Pc and COT ligand were designed and synthesized.
Bis Phosphinimino Methanides As Ligands In Rare Earth Heavy Alkaline Earth And Coinage Metal Chemistry
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Author : Tarun Kanti Panda
language : en
Publisher: Cuvillier Verlag
Release Date : 2005
Bis Phosphinimino Methanides As Ligands In Rare Earth Heavy Alkaline Earth And Coinage Metal Chemistry written by Tarun Kanti Panda and has been published by Cuvillier Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Nitrogen Donor Ligands In The Coordination Chemistry Of The Rare Earth And Alkaline Earth Metals
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Author : Jelena Jenter
language : en
Publisher: Cuvillier
Release Date : 2010
Nitrogen Donor Ligands In The Coordination Chemistry Of The Rare Earth And Alkaline Earth Metals written by Jelena Jenter and has been published by Cuvillier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Bis(phosphinimino)methanide rare earth metal bisborohydrides, as illustrated in Scheme I, were successfully synthesized by salt metathesis reactions of [K{CH(PPh2NSiMe3)2}] with [Ln(BH4)3(THF)n] (Ln = Sc (n = 2); Ln = La, Nd, Lu (n = 3)) or in the case of yttrium by the reaction of [{(Me3SiNPPh2)2CH}YCl2]2 with NaBH4. Interestingly, the BH4- anions are ?3-coordinated in the solid state structures of 3, 4, 6 and 7, while for the scandium complex 5 two different conformational polymorphs were identified, in which either both BH4- groups are ?3-coordinated or one BH4- anion shows an ?2-coordination mode. Furthermore, complexes 3, 6 and 7 showed high activities in the ring-opening polymerization (ROP) of e-caprolactone (CL). At 0 °C, the molar mass distribution reached the narrowest values ever obtained for the ROP of CL initiated by a rare earth metal borohydride species.
Alkaline Earth Metal Compounds
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Author : Sjoerd Harder
language : en
Publisher: Springer
Release Date : 2013-07-20
Alkaline Earth Metal Compounds written by Sjoerd Harder and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-07-20 with Science categories.
The series Topics in Organometallic Chemistry presents critical overviews of research results in organometallic chemistry. As our understanding of organometallic structure, properties and mechanisms increases, new ways are opened for the design of organometallic compounds and reactions tailored to the needs of such diverse areas as organic synthesis, medical research, biology and materials science. Thus the scope of coverage includes a broad range of topics in pure and applied organometallic chemistry, where new breakthroughs are being achieved that are of significance to a larger scientific audience. The individual volumes of Topics in Organometallic Chemistry are thematic. Review articles are generally invited by the volume editors.
Chiral Lewis Acids In Organic Synthesis
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Author : Jacek Mlynarski
language : en
Publisher: John Wiley & Sons
Release Date : 2017-06-26
Chiral Lewis Acids In Organic Synthesis written by Jacek Mlynarski 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 2017-06-26 with Technology & Engineering categories.
A complete overview covering the application of metal-based chiral Lewis acids from all parts of the periodic table, the Author emphasizes the most recent contributions to the field as well as prominent direction of development. The book discusses the design of chiral complexes as well as a wide spectrum of reactions promoted by various chiral Lewis acids, including water-compatible acids as well as the most important applications in the chemical and pharmaceutical industries. A must-have for catalytic and organic chemists working in the field, both in academia and industry, as well as pharmaceutical and medicinal chemists.
Encyclopedia Of The Alkaline Earth Compounds
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Author : Richard C. Ropp
language : en
Publisher: Newnes
Release Date : 2012-12-31
Encyclopedia Of The Alkaline Earth Compounds written by Richard C. Ropp and has been published by Newnes this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-31 with Science categories.
Encyclopedia of the Alkaline Earth Compounds is a compilation describing the physical and chemical properties of all of the alkaline earth compounds that have been elucidated to date in the scientific literature. These compounds are used in applications such as LEDs and electronic devices such as smart phones and tablet computers. Preparation methods for each compound are presented to show which techniques have been successful. Structures and phase diagrams are presented where applicable to aid in understanding the complexities of the topics discussed. With concise descriptions presenting the chemical, physical and electrical properties of any given compound, this subject matter will serve as an introduction to the field. This compendium is vital for students and scientific researchers in all fields of scientific endeavors, including non-chemists. 2013 Honorable Mention in Chemistry & Physics from the Association of American Publishers' PROSE Awards Presents a systematic coverage of all known alkaline earth inorganic compounds and their properties Provides a clear, consistent presentation based on groups facilitatating easy comparisons Includes the structure of all the compounds in high quality full-color graphics Summarizes all currently known properties of the transition metals compounds Lists the uses and applications of these compounds in electronics, energy, and catalysis
Handbook On The Physics And Chemistry Of Rare Earths
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Author : Jean-Claude G. Bunzli
language : en
Publisher: Elsevier
Release Date : 2021-10-30
Handbook On The Physics And Chemistry Of Rare Earths written by Jean-Claude G. Bunzli and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-10-30 with Science categories.
Handbook on the Physics and Chemistry of Rare Earths: Including Actinides, Volume 60 presents the latest release in this continuous series that covers all aspects of rare earth science, including chemistry, life sciences, materials science and physics. Presents up-to-date overviews and new developments in the field of rare earths, covering both their physics and chemistry Contains individual chapters that are comprehensive and broad, along with critical reviews Provides contributions from highly experienced, invited experts
Reactivity Of Low Valent Group 14 Species Toward Main Group Element Transition Metal And Lanthanide Compounds
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Author : Xiaofei Sun
language : en
Publisher: Cuvillier Verlag
Release Date : 2022-08-22
Reactivity Of Low Valent Group 14 Species Toward Main Group Element Transition Metal And Lanthanide Compounds written by Xiaofei Sun and has been published by Cuvillier Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-08-22 with Science categories.
Die Dissertation befasst sich mit der Anwendung von niedervalenten Gruppe-14-Verbindungen in metallorganischer Chemie und Hauptgruppenchemie. Ausgehend von mono- und divalenten Siliziumverbindungen wurde die analoge Siliziumverbindung des 2π-Hückel-aromatischen Verbindung dargestellt (Kapitel 3.1). Ein chirales Silen wurde synthetisiert und weitere Reaktivität mit unterschiedlichen kleinen Molekülen untersucht (Kapitel 3.2). Außerdem wurden bidentate Silylene als Liganden zur Stabilisierung von Seldenerdelementen, Erdalkalielementen und Gruppe-12-Metallen eingesetzt (Kapitel 3.3-3.4). Verschiedene Polyphosphide wurden aus reduzierenden Silylenen oder Plumbolen generiert (Kapitel 3.5-3.6). Die dianionischen Gruppe-14-Metallole, Silol, Germol und Plumbol wurden als Liganden für sandwichartige Lanthanidkomplexe eingesetzt und die magnetischen Eigenschaften der Er-Verbindung wurden untersucht (Kapitel 3.7-3.8).
Binary Rare Earth Oxides
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Author : G. Adachi
language : en
Publisher: Springer Science & Business Media
Release Date : 2004-09
Binary Rare Earth Oxides written by G. Adachi 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 2004-09 with Science categories.
Binary Rare Earth Oxides is the first book in the field of rare earth oxides that provides coverage from the basic science through to recent advances. This book introduces the unique characteristics of the binary rare earth oxides with their chemistry, physics and applications. It provides a comprehensive review of all the characteristics of rare earth oxides, essential for scientists and engineers involved with rare earths, oxides, inorganic materials, ceramics, and structures. The binary rare earth oxides bring us a variety of interesting characteristics. Understanding their fundamental mechanisms builds a bridge between solid-state chemistry and materials science. The book begins with a brief introduction to binary rare earth oxides, their physical and chemical stabilities, polymorphism, crystal structures and phase transformation and the association with current applications. The book goes on to present the band structure of the oxides using several quantum chemical calculations, which belong to a newly developed area in the binary rare earth oxides. Central to this chapter are the characterizations of electrical, magnetic and optical properties, as well as details of single crystal growth and particle preparation methods that have progressed in recent years. Later chapters concentrate on thermo-chemical properties and trace determination techniques. The final chapter contains a variety of useful applications in various fields such as phosphors, glass abrasives, automotive catalysts, fuel cells, solid electrolytes, sunscreens, iron steels, and biological materials. This book is an invaluable resource for materials scientists and solid-state physicists and chemists with an interest in rare earth oxides, as well as advanced students and graduates who require an approach to familiarize them with this field. This book provides guidance through a comprehensive review of all the characteristics of binary rare earth oxides.
Organoderivatives Of Rare Earth Elements
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Author : M.N. Bochkarev
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Organoderivatives Of Rare Earth Elements written by M.N. Bochkarev 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 2012-12-06 with Science categories.
The present book is based on the work of M.N.Bochkarev, G.S.Kalinina, L.N. zakharov and S.Ya.Khorshev. The Russian edition of that book appeared under the same title in 1989 and covered literature data up to the middle of 1986. Since that time the number of publications on this subject increased significantly. In this volume we include all the data published up to the end of 1990, as well as some of the most important relevant articles of 1991. Therefore, this book should be considered as a new book, devoted to the same problems, rather than as just a translation of the mentioned issue. This book deals with compounds of scandium, yttrium, lanthanum and lanthanoids containing direct metal-carbon bond, Le. with the real organometallic complexes of these metals. Besides, the volume includes the rare earth complexes, in which organic ligand is bonded to the metal atom via the atom of another element of the Periodic Table. In other words, the book includes all classes of rare earth organoderivatives. Carboxilates, fl-diketonates and related chelates are the exceptions, because their properties are closer to inorganic compounds and they were fully described elsewhere. It should be noted, that "rare earth elements", "rare earth metals", "lanthanoids" and related terms are used in this book for indicating scandium, yttrium, lanthanum and the following 14 elements of the Periodic Table.
