New Aspects in Phosphorus Chemistry III PDF Download

Author: Jean-Pierre Majoral
Publisher: Springer Science & Business Media
ISBN: 9783540007142
Category : Biochemistry
Languages : en
Pages : 238

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Author: Jean-Pierre Majoral
Publisher: Springer
ISBN: 3540461000
Category : Science
Languages : en
Pages : 268

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Book Description
Annotation What makes phosphorus so attractive that virtually every chemist can profit from its properties? Applications in different fields have already been realized or are undercurrent investigation.

Author: Jean-Pierre Majoral
Publisher: Springer Science & Business Media
ISBN: 9783540224983
Category : Biochemistry
Languages : en
Pages : 300

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Phosphorus chemistry is a diverse field and this volume focuses on new developments of "old themes" with different approaches and ideas, state of the art for two topics of general interest, and the emerging fields of research. This volume only describes in part the huge number of original papers on phosphorus-related topics.

Author: Jean-Pierre Majoral
Publisher: Springer
ISBN: 3540457313
Category : Science
Languages : en
Pages : 250

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Undoubtedly the chemistry of phosphorus appears more and more attractive in the sense that phosphorus presents an extraordinary versatile behaviour that allows the synthesis of a large number of different phosphorus reagents usable for applications in different fields, from biology to material science without f- getting key applications in catalysis. The full maturity of this topic of research can be explained by all the acquired knowledge over these twenty last years. Organic and inorganic chemistries of P , P and P species have been the s- in ]V v ject of thousands of publications while the chemistry of low coordinated ph- phorus derivatives experienced its hour of glory from the 1970s to the early 1990s. In parallel, interactions between phosphorus compounds and transition metals afforded many complexes, a lot of which present fascinating properties as catalysts. The interest in all these themes really is not decreasing, indeed some fas- nating areas of research are emerging or are the subject of many investigations: the medicinal chemistry of bisphosphonates, the role of phosphorus in biology, phosphorus ligands in radiopharmaceutical chemistry, phosphorus in material science, new polymers and dendrimers incorporating phosphorus, and as- metric catalysis to name but a few. Indeed researchers, benefitting from their background in basic phosphorus chemistry are developing many new fields of research.

Author: Jean-Pierre Majoral
Publisher: Springer Science & Business Media
ISBN: 3540440860
Category : Biochemistry
Languages : en
Pages : 268

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Book Description
Strong non-ionic bases are highly advantageous as stoichiometric reagents and as catalysts in synthetic organic chemistry owing to side reactions that f- quently occur when ionic bases such as LDA or alkali metal alkoxides are employed. A second reason that non-ionic bases are frequently more useful in these applications is that such bases are often more soluble in less polar organic solvents, particularly at low temperatures. Thirdly, non-ionic bases can provide reactive naked or tightly associated deprotonated substrate anions that are s- bilized by the relatively large, poorly solvated cations formed by the protonated base. In such cations, extensive positive charge delocalization can occur. Prior to our work on pro-azaphosphatranes of type 1 (Scheme 1), the very strong n- ionic bases utilized for organic transformations were largely confined to the nitrogenous bases shown below (Scheme 2). Scheme 1 Scheme 2 4 J.G. Verkade 2 Uses of Strong Nonionic Nitrogen Bases 2. 1 Amines One of the earliest strong non-ionic bases to make its appearance was Proton Sponge and its derivatives [1] and these systems have been reviewed [2]. More recently Proton Sponge has been used in the palladium-catalyzed arylation of 2,3-dihydrofuran [3], and it also catalyzes Knoevenagel condensations of s- strates possessing activated methylene groups [4]. Recently the synthesis of the macrocyclic tetramine below (Scheme 3) was reported [5]. The encrypted nitrogens are very basic (pK,24.

Author: Jean-Luc Montchamp
Publisher: Springer
ISBN: 3319155121
Category : Science
Languages : en
Pages : 283

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Book Description
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 are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.

Author:
Publisher: Elsevier
ISBN: 0080471005
Category : Technology & Engineering
Languages : en
Pages : 499

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Fuel cells have been recognized to be destined to form the cornerstone of energy technologies in the twenty-first century. The rapid advances in fuel cell system development have left current information available only in scattered journals and Internet sites. Advances in Fuel Cells fills the information gap between regularly scheduled journals and university level textbooks by providing in-depth coverage over a broad scope. The present volume provides informative chapters on thermodynamic performance of fuel cells, macroscopic modeling of polymer-electrolyte membranes, the prospects for phosphonated polymers as proton-exchange fuel cell membranes, polymer electrolyte membranes for direct methanol fuel cells, materials for state of the art PEM fuel cells, and their suitability for operation above 100°C, analytical modelling of direct methanol fuel cells, and methanol reforming processes. - Includes contributions by leading experts working in both academic and industrial R&D - Disseminates the latest research discoveries - A valuable resource for senior undergraduates and graduate students, it provides in-depth coverage over a broad scope

Author: Louis D. Quin
Publisher: John Wiley & Sons
ISBN: 9780471318248
Category : Science
Languages : en
Pages : 416

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Die organische Chemie des Phosphors - ein großes, äußerst lebendiges Forschungsfeld - umfaßt sowohl Verbindungen mit Kohlenstoff-Phosphor-Bindungen als auch organische Ester anorganischer Phosphorsäuren. Dieser Band behandelt die meisten phosphorhaltigen funktionellen Gruppen und daneben aktuelle Fragen wie z.B. ungewöhnliche Koordinationszustände, Heterocyclen, Anwendungen der 31P-NMR und andere spektroskopische Verfahren. Soweit bekannt, werden auch elektronische Reaktionsmechanismen und reaktive Intermediate diskutiert. Mit zahlreichen Literaturhinweisen! (03/00)

Author: Francesco Devillanova
Publisher: Royal Society of Chemistry
ISBN: 1847557570
Category : Science
Languages : en
Pages : 908

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Book Description
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. This book 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 book gives a comprehensive overview on recent developments over the last decade and is ideal for researchers in the field.

Author: Jean-Luc Montchamp
Publisher: Springer
ISBN: 3319154737
Category : Science
Languages : en
Pages : 250

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Book Description
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 are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.