Download or read book Synthesis and Investigation of Hexacarboxamide Cryptands as Anionic Binucleating Ligands written by Glen Edward Alliger and published by . This book was released on 2010 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have investigated the use of hexacarboxamide cryptands as sextuply anionic binucleating ligands. Two homobimetallic complexes of a t-butyl-substituted cryptand, featuring manganese(II) ion and cobalt(II) ions, have been synthesized. The manganese species features a bridging hydroxide ligand; both of these species have been structurally characterized, though complete characterization was not possible due to the compounds' impurity. A highly soluble hexacarboxamide cryptand, featuring dipropoxyphenoxyl substituents, was synthesized for the first time, and has been structurally characterized. The structure features a two-dimensional hydrogen bonding network, resulting in infinite sheets of cryptand units. We have synthesized a dicobalt(II) complex of this ligand. This compound features the metal centers in cofacial trigonal monopyramidal geometries, with an intermetallic distance in excess of 6 A. This marks the first time that such a species has been fully characterized. Despite the void between the metal centers, elucidation of constructive reactivity was a challenge, though insertion of cyanide under forcing conditions was achieved. This dicobalt(II) p-cyano complex was also structurally characterized. Using the methodology set forth for the synthesis of the dicobalt(II) complex of the soluble cryptand, we have synthesized a series of complexes of this ligand, featuring manganese(II), iron(II), nickel(II), and zinc(II). These compounds were structurally characterized, and were found to be isomorphous with the dicobalt(II) complex. A comparison of the structures is drawn. These compounds have also been characterized by a variety of methods, including SQuID magnetometry, cyclic voltammetry, EPR, and, in the case of the diiron complex, Mbssbauer spectroscopy. Also reported is work toward a diiron(III) complex; the M6ssbauer spectrum of this species is reported. In analogy to the pt-cyano complex of the dicobalt complex above, a p-cyano complex of the diiron(II) was synthesized and structurally characterized. Investigations into the utility of the initial t-butyl substituted cryptand as a ligand have also been made. Initial results indicate that monometalation of this ligand is possible, and treatment of a putative monocobalt(II) complex with tetrabutylammonium cyanide suggests that the cyanide-bound product is in equilibrium with the free complex.
Download or read book Issues in Chemistry and General Chemical Research 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 10508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Chemistry and General Chemical Research: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Chemistry and General Chemical Research. The editors have built Issues in Chemistry and General Chemical Research: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Chemistry and General Chemical Research in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Chemistry and General Chemical Research: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Cage Metal Complexes written by Yan Voloshin and published by Springer. This book was released on 2017-05-11 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fundamental book presents the most comprehensive summary of the current state in chemistry of cage metal complexes. After their previous book “The Encapsulation Phenomenon” (www.springer.com/978-3-319-27737-0) the authors in this book focus on the encapsulation of metal ions by different types of three-dimensional mono- and polynucleating caging ligands. Within these cage metal complexes, (metal) ions can be isolated from external factors. The book provides both a classification of the cage compounds and summaries of synthetic approaches. On that basis the authors then describe the unique chemical and physical properties and the resulting reactivity of the cage compounds, as well as practical and potential applications as potent topological drugs and prodrugs, antifibrillogenic agents, radiodiagnostic and radiotherapeutic compounds, paramagnetic probes, single-molecule magnets, electrocatalysts for hydrogen production, (photo)electronic devices, and many more. Readers will find a well-structured and concise overview, with particular emphasis on a review of synthesis and reactivity of various cage metal complexes, summarizing over 400 literature references, clearly presented in over 300 color schemes and figures.
Download or read book The Encapsulation Phenomenon written by Yan Voloshin and published by Springer. This book was released on 2016-04-27 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fundamental book presents the most comprehensive summary of the current state of the art in the chemistry of cage compounds. It introduces different ways of how ions and molecules can be encapsulated by three-dimensional caging ligands to form molecular and polymeric species: covalent, supramolecular, and coordination capsules. The authors introduce their classification, reactivity, and selected practical applications. Because encapsulation can isolate caged ions and molecules from external factors, the encapsulated species can exhibit unique physical and chemical properties. The resulting specific reactivity and selectivity can open up a range of applications, including chemical separation, recognition, chiral separation, catalysis, applications as sensors or probes, as molecular or supramolecular devices, or molecular carriers (cargo).A particularly strong emphasis in this book is on the summary and review of the synthesis of various types of cage compounds. Readers will find over 850 literature references summarized and clearly represented in over 600 schemes and illustrations. The book is structured by the types of caging ligands (covalent, supramolecular, or coordination capsules). The authors further arranged the chapters by ligand classes and types of encapsulated species (neutral molecules, anions, or cations). Readers will hence find an exhaustive reference resource and summary of the current state of research into encapsulated species, nowadays almost a separated realm of modern chemistry.
Download or read book Anion Coordination Chemistry written by Kristin Bowman-James and published by John Wiley & Sons. This book was released on 2012-03-27 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building on the pioneering work in supramolecular chemistry from the last 20 years or so, this monograph addresses new and recent approaches to anion coordination chemistry. Synthesis of receptors, biological receptors and metallareceptors, the energetics of anion binding, molecular structures of anion complexes, sensing devices are presented and computational studies addressed to aid with the understanding of the different driving forces responsible for anion complexation. The reader is promised an actual picture of the state of the art for this exciting and constantly evolving field of supramolecular anion coordination chemistry. The topics range from ion channels to selective sensors, making it attractive to all researchers and PhD students with an interest in supramolecular chemistry.
Download or read book Metal Catalyzed Oxidations of Organic Compounds written by Roger Sheldon and published by Elsevier. This book was released on 2012-12-02 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-Catalyzed Oxidations of Organic Compounds: Mechanistic Principles and Synthetic focuses on the oxidative transformations of functional groups. This book explores oxidation as being extensively used in the laboratory synthesis of fine organic chemicals and in the manufacture of large-volume petrochemicals. Organized into two parts encompassing 13 chapters, this book starts with an overview of the mechanistic principles of oxidation–reduction in biochemical, organic, and inorganic systems. This text then proceeds with a discussion of the use of molecular oxygen, hydrogen peroxide, and alkyl hydroperoxides as primary oxidants. Other chapters explore stoichiometric oxidations with metal oxidants, which include permanganate and chromic acid. This book discusses as well the synthetic applications of catalytic oxidations as well as the technology of petrochemical oxidation. The final chapter deals with the autoxidations of sulfur, phosphorus, and nitrogen compounds. This book is intended for chemists involved in organic synthesis, catalysis, and organometallic chemistry, both in academic institutions and in industrial laboratories.
Download or read book Recognition of Anions written by Ramon Vilar and published by Springer Science & Business Media. This book was released on 2008-07-24 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents critical reviews of the present position and future trends in modern chemical research concerned with chemical structure and bonding. The book contains short and concise reports, each written by the world's renowned experts.
Download or read book Anion Sensing written by Eric V. Anslyn and published by Springer Science & Business Media. This book was released on 2005-05-06 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: with contributions by numerous experts
Download or read book Supramolecular Chemistry of Anions written by Antonio Bianchi and published by Wiley-VCH. This book was released on 1997-01-31 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the central role anionic species have been shown to play in both mineralogical and biological processes, until now there have been no comprehensive references dealing exclusively with anionic coordination chemistry. Written by a group comprising pioneering researchers from the United States and Europe, Supramolecular Chemistry of Anions covers all theoretical and practical aspects of anion complexation, from thermodynamics and structure to catalysis and various applications. The authors begin with the 1967 discovery of halide inclusion by bicyclic diammonium receptors and trace the development of anion coordination chemistry through the most recent developments in the field. Topics covered in detail include: * Pre-supramolecular anion chemistry * Natural and artificial molecules that can act as anion receptors * Preorganization and chemical design * Structural, thermodynamic, electrochemical, and photochemical aspects of anion coordination * Computer methods for receptor design and multiple host-guest relations * Anion receptor catalysis and molecular recognition and transformation of nucleotides Supramolecular Chemistry of Anions is a valuable professional resource for organic and inorganic chemists, analytical chemists, biotechnologists, pharmaceutical scientists, and environmental chemists. It also serves as an excellent graduate-level text for students of molecular recognition, catalysis, and biomimetic chemistry.
Download or read book Metallomacrocycles written by Hai-Bo Yang and published by Royal Society of Chemistry. This book was released on 2018-10-05 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of metallomacrocycles from designing complex functional metallosupramolecular systems to their applications.
Download or read book Cryptands And Cryptates written by Luigi Fabbrizzi and published by World Scientific. This book was released on 2017-11-08 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cryptands were introduced by Jean-Marie Lehn in 1969 as cage-shaped selective ligands for alkali and alkaline-earth metal ions, which lie at the heart of supramolecular chemistry. This book reports on much of the research in the field since the '70s, and looks at, amongst other topics, metal coordination chemistry, anion coordination chemistry, the encapsulation and taming of reactive anions, the formation of cascade complexes and the design of fluorescent sensors for ionic analytes.Cryptands and Cryptates has been written as a coursebook, structured as a series of lectures for graduate students or advanced researchers in chemistry, materials science, chemical biology and nanotechnology. It is fully illustrated to show experiments and results, and is intended to stimulate further interest in this fertile field of supramolecular chemistry.Chapters are preceded by a Foreword by Jean-Marie Lehn.
Download or read book Understanding Intermolecular Interactions in the Solid State written by Deepak Chopra and published by Royal Society of Chemistry. This book was released on 2018-09-04 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technological and computational advances in the past decade have meant a vast increase in the study of crystalline matter in both organic, inorganic and organometallic molecules. These studies revealed information about the conformation of molecules and their coordination geometry as well as the role of intermolecular interactions in molecular packing especially in the presence of different intermolecular interactions in solids. This resulting knowledge plays a significant role in the design of improved medicinal, mechanical, and electronic properties of single and multi-component solids in their crystalline state. Understanding Intermolecular Interactions in the Solid State explores the different techniques used to investigate the interactions, including hydrogen and halogen bonds, lone pair–pi, and pi–pi interactions, and their role in crystal formation. From experimental to computational approaches, the book covers the latest techniques in crystallography, ranging from high pressure and in situ crystallization to crystal structure prediction and charge density analysis. Thus this book provides a strong introductory platform to those new to this field and an overview for those already working in the area. A useful resource for higher level undergraduates, postgraduates and researchers across crystal engineering, crystallography, physical chemistry, solid-state chemistry, supramolecular chemistry and materials science.
Download or read book Macrocycle Synthesis written by David Parker and published by Oxford University Press on Demand. This book was released on 1996 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the first time, this book offers a step-by-step practical guide to the chemical preparation of a variety of large-ring cyclic molecules. It contains a wealth of practical information that will be welcomed by the specialist researcher and the novice chemist alike.
Download or read book Supramolecular Coordination Complexes written by Sankarasekaran Shanmugaraju and published by Elsevier. This book was released on 2022-10-28 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supramolecular Coordination Complexes: Design, Synthesis, and Applications discusses the growth of the field and explores the advantages, opportunities and latest applications of supramolecular complexes. Beginning with an introduction to design principles, synthetic methods, and post-synthetic functionalization of supramolecular complexes, the book goes on to compile the different analytical and computational modeling methods used to understand the structure and functional properties of supramolecular structures. Applications of supramolecular complexes in biomedicine, sensing, catalysis and materials are then explored in detail. Drawing on the knowledge of a global team of experts, this book provides a wealth of interesting information for students and researchers working in the design, synthesis or application of such complexes. Discusses cutting-edge approaches for the investigation of supramolecular coordination chemistry Summarizes a varied range of supramolecular coordination, complex designs and applications Highlights the interdisciplinary connections between supramolecular chemistry and the fields of biology and materials science
