Download or read book Synthesis Characterization and Reactivity of Hexarhenium Selenide Cluster Complexes Containing Carbon coordinating Ligands written by Wade B. Wilson and published by . This book was released on 2015 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: The coordination of benzyl isocyanide to the [Re6Se8]2+ core to produce [Re6Se8(PEt3)5(C≡NCH2Ph)](SbF6)2, an organometallic hexarhenium selenide cluster, is also described. This synthesis is important for the reason that it extends the very limited organometallic chemistry of hexarhenium selenide clusters. In addition, the potential use of isocyanide ligands to produce Fischer carbenes is discussed.
Download or read book Synthesis Characterization and Reactivity of Hexarhenium Selenide Cluster Complexes Containing Alkynyl Ligands written by Ernesto Soto and published by . This book was released on 2020 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis discusses the transformations of alkynyl ligands, coordinated to the [Re6Se8]2+ cluster cores. The isolation and full characterization of [Re6Se8(PEt3)5(C9́ŁCPh)](SbF6) was prepared by coordinating phenyl acetylide to the [Re6Se8]2+ core. This newly made alkynyl complex was first subjected to protonation of the alkynyl ligand with HBF40́ØEt2O in THF which formed [Re6Se8(PEt3)5(THF)]2+, and then the alkynyl complex was subjected to alkylation with dimethyl sulfate which formed [Re6Se8(PEt3)5(OSO3Me)]+. [Re6Se8(PEt3)5(C9́ŁCPh)](SbF6) was further subjected to electrophilic addition with tetracyanoethylene and 7,7,8,8-tetracyanoquinodimethane, which generated the respective butadienyl cluster complexes. Full characterization of these species is reported, except for the [Re6Se8(PEt3)5(THF)]2+. Additionally, the synthesis and isolation of cis-[Re6Se8(PEt3)4(OTs)2], and trans-[Re6Se8(PEt3)4(OTs)2] will be discussed. The cis-[Re6Se8(PEt3)4(C9́ŁCPh)2] and trans-[Re6Se8(PEt3)4(C9́ŁCPh)2] complexes have been isolated and fully characterized. Lastly, data demonstrating attempts at coordinating ethynyl trimethylsilyl acetylide to the [Re6Se8]2+ cluster core is presented and discussed.
Download or read book Synthesis Characterization and Reactivity of Hexarhenium Selenide Cluster Complexes Containing Cand N Donor Ligands written by Colleen P. Chin and published by . This book was released on 2018 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis will discuss the transformation of isonitrile and alkynyl ligands, coordinated to [Re6Se8]2+ cluster cores, into Fischer carbene ligands. The isolation and full characterization of [Re6Se8(PEt3)5(benzoxazole)] + prepared by coordinating (2-trimethylsiloxy)phenyl isonitrile to the [Re6Se8]2+ core and subsequent ring closure of the ligand will be described. The methylation or protonation of the [Re6Se8(PEt3)5(benzoxazole)] + species leads to the Fischer carbene products, [Re6Se 8(PEt3)5(NCH3-1,2-dihydrobenzoxazol-2-ylidene)] 2+ and [Re6Se8(PEt3)5( NH-1,2-dihydrobenzoxazol-2-ylidene)]2+ respectively. Full characterization of these two Fischer carbene products is reported. Oxidation studies were examined for [Re6Se8(PEt 3)5(benzoxazole)]+ and [Re6Se 8(PEt3)5(NCH3-1,2-dihydrobenzoxazol-2-ylidene)] 2+ to examine the redox properties of these novel cluster complexes. Additionally, the compound [Re6Se8(PEt3) 5(phenylalkynyl)]+ has been isolated and attempts have been made to transform the alkynyl ligand into a Fischer carbene, [Re 6Se8(PEt3)5(methoxybenzyl-1-ylidene)] 2+.
Download or read book Ligated Transition Metal Clusters in Solid state Chemistry written by Jean-François Halet and published by Springer Nature. This book was released on 2019-08-29 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume dedicated to the memory of Marcel Sergent who was a leader in this field for many years, addresses past achievements and recent developments in this vibrant area of research. Large classes of ligated transition metal clusters are produced either exclusively or most reliably by means of high-temperature solid-state reactions. Among them, the Chevrel-Sergent phases and related materials have generated enormous interest since their discovery in 1971. Today, these materials and their numerous derivatives still constitute a vivid area of research finding some applications not only in superconductivity, but also in catalysis, optics or thermoelectricity to mention a few.
Download or read book Synthesis Characterization and Reactivity of Metal Carbonyl Clusters Containing Small Nitrogeneous Ligands written by Joanne Agnes Smieja and published by . This book was released on 1986 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Organometallic Complexes Containing All carbon Ligands written by Paul James Low and published by . This book was released on 1996 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis details the synthesis, characterization and reactions of some transition metal complexes containing ligands derivived from the diacetylenes 1,4-bis (trimethylsilyl)buta-1,3-diyne and buta-1,3-diyne. Some related chemistry of the unsaturated carbone complexes are also explored.
Download or read book An Exploration of the Inorganic Organometallic and Catalytic Potential of Re6 0 3 Se 8 2 Core Containing Cluster Derivatives Synthesis Characterization Computational Analysis and Applications written by Peter James Kueffer and published by . This book was released on 2008 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigations of small molecules activated through ligation to the Lewis acidic [Re6(0ơ3-Se)8]2+ cluster core are detailed herein for the purpose of the development of unrealized organometallic and catalytic applications. An introduction is provided including the background needed to comprehend access to the solution chemistry, the general properties, and the current state of development of the [Re6(0ơ3-Se)8]2+ cluster core. Activation of nitriles is examined, specifically focusing on the site-differentiated cluster acetonitrile solvates of the general form [Re6(0ơ3-Se)8(PEt3)6-n(MeCN)n](SbF6)2 (n = 1,2) and the hexaacetonitrile solvate [Re6(0ơ3-Se)8(MeCN)6](SbF6)2. Coordination of acetonitrile to the cluster core yields susceptibility of the nitrile carbon to nucleophilic attack; thus, the formation of the alcohol adducts of these molecules, the stereochemical features, and the reactivity of the resulting imino ester complexes is established. Bifurcated hydrogen bonding between two selenium atoms of the core and the hydrogen atom of an approaching alcohol is proposed to explain the stereoselectivity. Furthermore, the synthesis, characterization, computational analysis, and reactivity of the first organometallic compounds of the [Re6(0ơ3-Se)8]2+ cluster core, that of the cluster carbonyls [Re6(0ơ3-Se)8(PEt3)6-n(CO)n](SbF6)2 (n = 1,2), are presented. Spectroscopic, electrochemical, structural, and computational studies verify that backbonding between the [Re6(0ơ3-Se)8]2+ cluster core and CO exists, that electronic distinction is inherent between cis and trans sites (despite overall delocalization), and that the Se atoms actively contribute to the Re bonding capabilities. Substantiation of the high air, water, thermal, and UV light stability of the carbonyl complexes led to derivatives of the carbonyl compounds, that of the oxidized cluster complex [Re6(0ơ3-Se)8(PEt3)5Cl](SbF6)2 and the known fused-cluster dimer [Re12Se16(PEt3)10](SbF6)4, demonstrating the reactivity of the cluster carbonyls. Electrophilicty of coordinated CO is exemplified through the synthesis of an acyl complex {Re6(0ơ3-Se)8(PEt3)5[C(O)(CH3)]}I, an unexpectedly stable product in the pursuit a cluster carbene. Initial investigations of this complex suggest thorough transference of the acyl negative charge to the cluster core prohibiting successive electrophilic addition. The putative acetone solvate and its reactivity to alcohols is briefly examined with aspects that merit further research, including full characterization of the catalytic cycle to liberate free imino esters, exploitation of the proposed hydrogen bonding to generate a carbene compound, and hydrogen storage/activation.
Download or read book Synthesis Characterization and Reactivity of Transition Metal Complexes Supported by Heteropolydentate Ligation written by Adam Ruddy and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ligated Transition Metal Clusters in Solid state Chemistry written by Jean-François Halet and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume dedicated to the memory of Marcel Sergent who was a leader in this field for many years, addresses past achievements and recent developments in this vibrant area of research. Large classes of ligated transition metal clusters are produced either exclusively or most reliably by means of high-temperature solid-state reactions. Among them, the Chevrel-Sergent phases and related materials have generated enormous interest since their discovery in 1971. Today, these materials and their numerous derivatives still constitute a vivid area of research finding some applications not only in superconductivity, but also in catalysis, optics or thermoelectricity to mention a few. .
Download or read book Hybrid Organic Inorganic Perovskites written by Li Wei and published by John Wiley & Sons. This book was released on 2020-10-19 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid organic-inorganic perovskites (HOIPs) have attracted substantial interest due to their chemical variability, structural diversity and favorable physical properties the past decade. This materials class encompasses other important families such as formates, azides, dicyanamides, cyanides and dicyanometallates. The book summarizes the chemical variability and structural diversity of all known hybrid organic-inorganic perovskites subclasses including halides, azides, formates, dicyanamides, cyanides and dicyanometallates. It also presents a comprehensive account of their intriguing physical properties, including photovoltaic, optoelectronic, dielectric, magnetic, ferroelectric, ferroelastic and multiferroic properties. Moreover, the current challenges and future opportunities in this exciting field are also been discussed. This timely book shows the readers a complete landscape of hybrid organic-inorganic pervoskites and associated multifuctionalities.
Download or read book Handbook of Chalcogen Chemistry written by Francesco Devillanova and published by Royal Society of Chemistry. This book was released on 2013-07-25 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Chalcogen Chemistry: New Perspectives in Sulfur, Selenium and Tellurium provides an overview of recent developments, particularly from the last decade, on the chemistry of the chalcogen group elements (S, Se and Te). While up to a few decades ago, chalcogen chemistry was mainly centred on sulphur, in recent years the research based on Se and Te has increased dramatically, and has created huge scope for the use of compounds based on this type of chemistry. The Handbook is organised into two parts, the first of which deals systematically with the chemistry of chalcogens in relation to other group elements in the periodic table. It also includes an overview of metal-chalcogenides and metal-polychalcogenides. The second part reflects the interdisciplinary nature of chalcogen chemistry and focuses on biological, materials and supramolecular aspects of the field. This Handbook gives a comprehensive overview on recent developments over the last decade and is ideal for researchers in the field.
Download or read book Atomically Precise Nanochemistry written by Rongchao Jin and published by John Wiley & Sons. This book was released on 2023-06-12 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explore recent progress and developments in atomically precise nanochemistry Chemists have long been motivated to create atomically precise nanoclusters, not only for addressing some fundamental issues that were not possible to tackle with imprecise nanoparticles, but also to provide new opportunities for applications such as catalysis, optics, and biomedicine. In Atomically Precise Nanochemistry, a team of distinguished researchers delivers a state-of-the-art reference for researchers and industry professionals working in the fields of nanoscience and cluster science, in disciplines ranging from chemistry to physics, biology, materials science, and engineering. A variety of different nanoclusters are covered, including metal nanoclusters, semiconductor nanoclusters, metal-oxo systems, large-sized organometallic nano-architectures, carbon clusters, and supramolecular architectures. The book contains not only experimental contributions, but also theoretical insights into the atomic and electronic structures, as well as the catalytic mechanisms. The authors explore synthesis, structure, geometry, bonding, and applications of each type of nanocluster. Perfect for researchers working in nanoscience, nanotechnology, and materials chemistry, Atomically Precise Nanochemistry will also benefit industry professionals in these sectors seeking a practical and up-to-date resource.
Download or read book Electrophoretic Deposition Fundamentals and Applications written by and published by The Electrochemical Society. This book was released on 2002 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cluster Assembled Materials written by Klaus Sattler and published by CRC Press. This book was released on 1996 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is now some 15 years since atomic clusters were first produced and investigated in laboratories. Since then, knowledge concerning clusters has enjoyed rapid and sustained growth, and cluster research has become a new branch of science.
Download or read book Optical Properties of Semiconductor Nanocrystals written by S. V. Gaponenko and published by Cambridge University Press. This book was released on 1998-10-28 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examines the optical properties of low-dimensional semiconductor structures, a hot research area - for graduate students and researchers.
Download or read book Comprehensive Coordination Chemistry II written by J. A. McCleverty and published by Newnes. This book was released on 2003-12-03 with total page 11845 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Coordination Chemistry II (CCC II) is the sequel to what has become a classic in the field, Comprehensive Coordination Chemistry, published in 1987. CCC II builds on the first and surveys new developments authoritatively in over 200 newly comissioned chapters, with an emphasis on current trends in biology, materials science and other areas of contemporary scientific interest.
Download or read book Polymeric Gels written by Kunal Pal and published by Woodhead Publishing. This book was released on 2018-06-15 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric Gels: Characterization, Properties and Biomedical Applications covers the fundamentals and applications of polymeric gels. Particular emphasis is given to their synthesis, properties and characteristics, with topics such as natural, synthetic, and smart polymeric gels, medical applications, and advancements in conductive and magnetic gels presented. The book covers the basics and applications of hydrogels, providing readers with a comprehensive guide on the types of polymeric gels used in the field of biomedical engineering. Provides guidance for decisions on the suitability and appropriateness of a synthetic route and characterization technique for particular polymeric networks Analyzes and compares experimental data Presents in-depth information on the physical properties of polymeric gels using mathematical models Uses an interdisciplinary approach to discuss potential new applications for both established polymeric gels and recent advances
