Reduction Chemistry Of Rare Earth Metal Complexes PDF Download
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Author | : Wenliang Huang |
Publisher | : |
Total Pages | : 167 |
Release | : 2013 |
Genre | : |
ISBN | : |
Download Reduction Chemistry of Rare-Earth Metal Complexes Book in PDF, ePub and Kindle
Rare-earths are a group of metals with fascinating physical properties and intriguing chemical reactivity. Organometallic rare-earth chemistry is of particular interest because of the increasing number of their applications in industry and consumer goods as well as the importance of understanding their physical and chemical properties. Despite the dominance of the trivalent oxidation state, recently, low-valent organometallic rare-earth compounds were characterized and showed interesting reactivity toward various molecules. The theme of this thesis is the reduction chemistry of rare-earth metal complexes. By utilizing an electronically and geometrically flexible ferrocene diamide ligand (NN^TBS = fc(NSi^tBuMe2)2, fc =1,1'-ferrocenediyl), unprecedented reactivity was discovered together with the synthesis and characterization of a series of rare-earth metal arene complexes. The fruitful reduction chemistry allowed: (1) the discovery of a new aromatic C-H and C-F bond activation mechanism for rare-earths; (2) the synthesis of the first scandium naphthalene complex and a reactivity study on P4 activation by rare-earth arene complexes; (3) the isolation and characterization of a 6C, 10[pi]-electron aromatic system stabilized by coordination to rare-earth metal ions. Recently, an improved method to access paramagnetic rare-earth starting materials for organometallic chemistry was developed in order to study the physical and chemical properties of paramagnetic rare-earth biphenyl complexes.
Author | : |
Publisher | : Elsevier |
Total Pages | : 373 |
Release | : 2014-07-10 |
Genre | : Science |
ISBN | : 0444633308 |
Download Handbook on the Physics and Chemistry of Rare Earths Book in PDF, ePub and Kindle
The Handbook on the Physics and Chemistry of Rare Earths is an ongoing series covering all aspects of rare earth science—chemistry, life sciences, materials science, and physics. The main emphasis of the Handbook is on rare earth elements [Sc, Y and the lanthanides (La through Lu)] but information is also included, whenever relevant, on the closely related actinide elements. The individual chapters are comprehensive, broad, up-to-date critical reviews written by highly experienced invited experts. The series, which was started in 1978 by Professor Karl A. Gschneidner Jr., combines and integrates both the fundamentals and applications of these elements and now publishes two volumes a year. Individual chapters are comprehensive, broad, critical reviews Contributions are written by highly experienced, invited experts Up-to-date overviews of developments in the field
Author | : Hartmut Yersin |
Publisher | : Springer Science & Business Media |
Total Pages | : 312 |
Release | : 2004-11-18 |
Genre | : Science |
ISBN | : 9783540209485 |
Download Transition Metal and Rare Earth Compounds III Book in PDF, ePub and Kindle
With contribution by numerous experts
Author | : Chun-Hui Huang |
Publisher | : John Wiley & Sons |
Total Pages | : 602 |
Release | : 2011-09-23 |
Genre | : Science |
ISBN | : 0470824867 |
Download Rare Earth Coordination Chemistry Book in PDF, ePub and Kindle
Edited by a highly regarded scientist and with contributions from sixteen international research groups, spanning Asia and North America, Rare Earth Coordination Chemistry: Fundamentals and Applications provides the first one-stop reference resource for important accomplishments in the area of rare earth. Consisting of two parts, Fundamentals and Applications, readers are armed with the systematic basic aspects of rare earth coordination chemistry and presented with the latest developments in the applications of rare earths. The systematic introduction of basic knowledge, application technology and the latest developments in the field, makes this ideal for readers across both introductory and specialist levels.
Author | : Abhilash |
Publisher | : CRC Press |
Total Pages | : 384 |
Release | : 2019-11-11 |
Genre | : Science |
ISBN | : 0429659814 |
Download Critical and Rare Earth Elements Book in PDF, ePub and Kindle
This book is aimed to compile the distribution of rare earth elements in various resources with their processing from secondary resources. It includes details of various processes developed for extraction of rare earth elements from varied raw materials ranging from e-wastes, tailings, process wastes and residues. It emphasizes importance of processing of the secondary resources to assist environmental remediation of such untreated wastes and get finished products. It covers all aspects of rare metals and rare earth metals in one volume covering extraction, separation and recycling of secondary resources for extraction of these metals along with relevant case studies.
Author | : Christopher Matthew Kotyk |
Publisher | : |
Total Pages | : 132 |
Release | : 2015 |
Genre | : |
ISBN | : 9781321996111 |
Download Expanding Synthetic Aspects of Redox and Mechanical Organometallic Chemistry of Rare Earth Complexes Book in PDF, ePub and Kindle
This dissertation describes the synthesis, characterization, and reactivity of organometallic complexes of yttrium and the lanthanides in an effort to more completely understand the nature of a recently-discovered class of +2 ions of these rare earth metals. The reactivity of complexes of a new set of Ln2+ ions (Ln = rare earth metal) with unprecedented 4fn5d1 electron configurations has been explored to expand the unique chemistry possible with the rare earth elements. The isolation of unexpected reaction products is described as well as the discovery of a new divalent lanthanide system and the utilization of solvent-free mechanochemical synthesis for established rare earth organometallic species. In Chapter 1, the reactivity of the highly-reducing, air-, moisture-, and temperature-sensitive divalent lanthanide complexes [K(2.2.2-cryptand)][Cp'3Ln] (Ln = Y, La, Ce, Dy) is characterized by examining reactions with aromatic organic substrates of known reduction potential. Complexes of the 4fn5d1 Ln2+ ions reduce naphthalene and biphenyl within minutes to form a new class of reduced aromatic complexes, [K(2.2.2-cryptand)][Cp'2Ln(n4-C10H8)] (Ln = Y, La, Ce, Dy) and [K(2.2.2-cryptand)][Cp'2Y(n6-C6H5Ph)], respectively. The naphthalene reactions also produced the previously unobserved ligand redistribution products [K(2.2.2-cryptand)][Cp'4Ln] (Ln = Y, La), which show the effect of the lanthanide contraction on structure as the lanthanum complex has four n5-Cp' rings while yttrium has three n5-Cp' rings and one n1-Cp' ring.
Author | : Meng He |
Publisher | : Cuvillier Verlag |
Total Pages | : 134 |
Release | : 2016-08-16 |
Genre | : Science |
ISBN | : 3736983301 |
Download Synthesis of Chiral Rare Earth and Alkaline Earth Compounds Book in PDF, ePub and Kindle
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.
Author | : |
Publisher | : Elsevier |
Total Pages | : 172 |
Release | : 2019-08-10 |
Genre | : Science |
ISBN | : 0444642986 |
Download Handbook on the Physics and Chemistry of Rare Earths Book in PDF, ePub and Kindle
Handbook on the Physics and Chemistry of Rare Earths: Including Actinides, Volume 55, the latest release in a continuous series of books covering all aspects of rare earth science, including chemistry, life sciences, materials science and physics, presents comprehensive, broad, up-to-date, critical reviews written by highly experienced, invited experts. The series, which was started in 1978 by Professor Karl A. Gschneidner Jr., combines and integrates both the fundamentals and applications of these elements, with this release including chapters on Low Coordinate f-element Complexes and Organometallic Lanthanide SMMs. 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
Author | : Frank Harold Spedding |
Publisher | : |
Total Pages | : 30 |
Release | : 1951 |
Genre | : Gadolinium |
ISBN | : |
Download Preparation of Rare Earth Metals Book in PDF, ePub and Kindle
The production of over 400 grams of pure gadolinium metal by reduction of the anhydrous chloride by calcium in tantalum vessels is described; yields were over 97%. The use of the same techniques in an attempt to prepare yttrium metal were partially successful.
Author | : N. E. Topp |
Publisher | : |
Total Pages | : 176 |
Release | : 1965 |
Genre | : Science |
ISBN | : |
Download The Chemistry of the Rare-earth Elements Book in PDF, ePub and Kindle