Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Les Clusters Metalliques Moleculaires
Download Les Clusters Metalliques Moleculaires full books in PDF, epub, and Kindle. Read online Les Clusters Metalliques Moleculaires ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis LES CLUSTERS METALLIQUES MOLECULAIRES by : HYND.. REMITA
Download or read book LES CLUSTERS METALLIQUES MOLECULAIRES written by HYND.. REMITA and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS LE BUT DE FACILITER LA SYNTHESE DE CLUSTERS METALLIQUES DE HAUTE NUCLEARITE ET INTERMETALLIQUES QUI SONT SOUVENT DIFFICILES A PREPARER PAR LES METHODES CHIMIQUES CONVENTIONNELLES, UN PROCEDE ORIGINAL UTILISANT LES RAYONNEMENTS IONISANTS ET PERMETTANT DE REDUIRE LES SELS METALLIQUES EN SOLUTION A ETE EXPLORE ET DEVELOPPE. LES METAUX ETUDIES SONT: FE, RU, OS, CO, RH, IR, PT, CU ET AG, LES LIGANDS ETANT DES CARBONYLES OU DES PHOSPHINES. DES CLUSTERS DE DIFFERENTES NUCLEARITES: DE 3 A 55 ATOMES (INCLUANT DES CLUSTERS INTERMETALLIQUES ET DE NOUVEAUX COMPOSES) AINSI QUE DES COLLOIDES ONT ETE SYNTHETISES. LES TECHNIQUES UTILISEES POUR LA CARACTERISATION SONT: MICROANALYSE, SPECTROSCOPIE IR, SPECTROSCOPIE RMN, SPECTROSCOPIE UV-VISIBLE, SPECTROMETRIE DE MASSE, CENTRIFUGATION ET HRTEM (MICROSCOPIE ELECTRONIQUE HAUTE RESOLUTION PAR TRANSMISSION). LES FACTEURS SUSCEPTIBLES D'ORIENTER LA SYNTHESE RADIOLYTIQUE ONT ETE ETUDIES: CONCENTRATION, EFFET DE DOSE, PH... LA RADIOLYSE PULSEE NANOSECONDE A ETE UTILISEE AFIN D'ETUDIER LES TOUTES PREMIERES ETAPES DE REDUCTION ET DE DETERMINER LES ESPECES TRANSITOIRES IMPLIQUEES DANS LA FORMATION DES CLUSTERS. LA VOIE RADIOLYTIQUE S'EST REVELEE EXTREMEMENT FRUCTUEUSE POUR LA SYNTHESE DE CLUSTERS METALLIQUES MOLECULAIRES
Book Synopsis CONTRIBUTION A LA CHIMIE DES CLUSTERS by : RAPHAEL.. PUGIN
Download or read book CONTRIBUTION A LA CHIMIE DES CLUSTERS written by RAPHAEL.. PUGIN and published by . This book was released on 2000 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE MEMOIRE PRESENTE LA SYNTHESE DE CLUSTERS DE TYPE AU 5 5, FORTEMENT STABILISES PAR DE NOUVELLES CLASSES DE LIGANDS THIOLS ET L'ETUDE DE L'EVOLUTION DE LEURS PROPRIETES ELECTRONIQUES RESPECTIVES EN FONCTION DE LA NATURE ET DE LA TAILLE DES LIGANDS PROTECTEURS. LA STABILITE TRES NETTEMENT ACCRUE DE CES NOUVEAUX CLUSTERS S'EST EGALEMENT AVEREE ETRE UN ATOUT CONSIDERABLE POUR LA CONSTRUCTION D'ARRANGEMENTS MONO-, BI- OU TRI-DIMENSIONELS ORDONNES DE CLUSTERS, QUI REPRESENTE INCONTESTABLEMENT LA DERNIERE ETAPE A FRANCHIR POUR L'UTILISATION DE TELS SYSTEMES COMME COMPOSES NANOELECTRONIQUES. UNE EXTENSION DE CETTE ETUDE A EGALEMENT CONSISTE A TENTER DE STABILISER DES CLUSTERS AU 5 5 PAR DES LIGANDS DE TYPE DENDRIMERES DE DIFFERENTES GENERATIONS, DONT LA PERIPHERIE ETAIT DECOREE PAR DES FONCTIONS THIOLS. POUR CERTAINS DENDRIMERES DE HAUTE GENERATION, LA FORMATION DE MICROCRISTAUX REGULIERS D'AU 5 5 NUS, DANS LE SENS DEPOURVUS DE TOUTE COUCHE PROTECTRICE DE LIGANDS, A POUR LA PREMIERE FOIS PU ETRE OBSERVEE ET ETUDIEE PAR TEM (TRANSMISSION ELECTRON MICROSCOPY), SAXRD ET WAXRD (SMALL AND WIDE ANGLE X-RAY DIFFRACTION). CES METHODES D'ANALYSE ONT TOUTES DEMONTRE UNE STRUCTURE CUBIQUE DEFORMEE MAIS PARFAITEMENT REGULIERE DE LA SUPERSTRUCTURE (AU 5 5). LE ROLE DU DENDRIMERE AINSI QU'UNE TENTATIVE D'EXPLICATION DE LA FORMATION DE TELS MICROCRISTAUX SONT EGALEMENT REPORTES. DE PLUS, COMBINANT L'UTILISATION EN CHIMIE DE COORDINATION, DE LIGANDS DIPHOSPHINES FONCTIONNELLES DE TYPE (PH 2P) 2N(CH 2) NSIME 3 M(OME) M COMME LIGANDS ASSEMBLEURS POUR LA SYNTHESE DE COMPLEXES DINUCLEAIRES OU DE CLUSTERS, AVEC L'APTITUDE DE CERTAINS MATERIAUX NANOPOREUX A SE COMPORTER COMME DES MATRICES AU SEIN DESQUELLES CERTAINES ESPECES MOLECULAIRES PEUVENT ETRE CONDENSEES, UN AXE DE RECHERCHE A CONSISTE A ELABORER DIFFERENTES STRATEGIES D'INCORPORATION DE COMPLEXES ET CLUSTERS FONCTIONNELS ET DE COLLOIDES DANS DES MEMBRANES D'ALUMINE NANOPOREUSES PREFONCTIONNALISEES OU NON.
Book Synopsis Physics and Chemistry of Metal Cluster Compounds by : L.J. de Jongh
Download or read book Physics and Chemistry of Metal Cluster Compounds written by L.J. de Jongh and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: On Friday, February 20, 1980, I had the pleasure to be present at the inaugural lecture of my colleague Jan Reedijk, who had just been named at the Chair of Inorganic Chemistry of Leiden University. According to tradition, the ceremony took place in the impressive Hall of the old University Academy Building. In the course of his lecture, Jan mentioned a number of recent developments in chemistry which had struck him as particularly important or interesting. Among those was the synthesis of large metal cluster compounds, and, to my luck, he showed a slide ofthe molecular structure of [PtI9(C)b]4-. (To my luck, since at traditional Leiden University it is quite unusual to show slides at such ceremonies.) This constituted my first acquaintance with this exciting new class of materials. I became immediately fascinated by this molecule, partly because of the esthetic beauty of its fivefold symmetry, partly because as a physicist it struck me that it could be visualized as an "embryonically small" metal particle, embedded in a shell of CO ligands.
Book Synopsis Growth and Properties of Metal Clusters: Applications to Catalysis and the Photographic Process - International Conference Proceedings by : Jean Bourdon
Download or read book Growth and Properties of Metal Clusters: Applications to Catalysis and the Photographic Process - International Conference Proceedings written by Jean Bourdon and published by Elsevier. This book was released on 2000-04-01 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: Growth and Properties of Metal Clusters: Applications to Catalysis and the Photographic Process - International Conference Proceedings
Book Synopsis The Chemistry of Metal Cluster Complexes by : Duward F. Shriver
Download or read book The Chemistry of Metal Cluster Complexes written by Duward F. Shriver and published by Wiley-VCH. This book was released on 1990 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seven chapters summarize the current status of organometallic cluster chemistry from the viewpoints of synthesis, structure and bonding, ligand substitution reactions, ligand transformations, polyhedral rearrangement, cluster fragmentation reactions, and metal clusters as homogeneous catalysts. An eighth provides an extensive bibliography of reviews for the period from 1965 to 1988. Annotation copyrighted by Book News, Inc., Portland, OR
Author :Guillermo Gonzalez-Moraga Publisher :Springer Science & Business Media ISBN 13 :3642859267 Total Pages :310 pages Book Rating :4.6/5 (428 download)
Book Synopsis Cluster Chemistry by : Guillermo Gonzalez-Moraga
Download or read book Cluster Chemistry written by Guillermo Gonzalez-Moraga and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cluster chemistry is one of the recent, exciting areas of Inorganic Chemistry. The occurence of molecular clusters, like fullerene C60, constitutes a fundamental feature midway between the chemistry of isolated chemical compounds and that of the elements. Main features of the Cluster Chemistry of both main group and transition metal elements are treated in this book. The author highlights aspects releated to the synthesis, the structure, the special bonding and the reactivity of these species. The book is written as a textbook for senior undergraduate and postgraduate students. References in tables andillustrations permit the reader to reach relevant original information. Professor Gonzalez-Moraga fills a demand for a publication appropriate for dissemination and specially for teaching this exciting subject. From the Contents: Current Concepts in Modern Chemistry - Transition Metal Cluster Chemistry - Main Group-Transition Metal Mixed Clusters - Cluster Compounds of the Main Group Elements - Synthetic Analogues of the Active Sites of Iron-Sulfur Proteins.
Book Synopsis Étude théorique de complexes inorganiques et de clusters métalliques de taille nanométrique by : Camille Latouche
Download or read book Étude théorique de complexes inorganiques et de clusters métalliques de taille nanométrique written by Camille Latouche and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les travaux décrits dans cette thèse ont porté sur l'application de méthodes de la chimie quantique à l'étude de différents types et familles de composés chimiques, à savoir, des clusters encapsulant des anions et des complexes inorganiques de métaux de transition. On s'est particulièrement intéressé à la structure géométrique, la structure électronique et aux relations structures-propriétés optiques de systèmes moléculaires stables et bien caractérisés.
Author :Karl-Heinz Meiwes-Broer Publisher :Springer Science & Business Media ISBN 13 :3642571697 Total Pages :315 pages Book Rating :4.6/5 (425 download)
Book Synopsis Metal Clusters at Surfaces by : Karl-Heinz Meiwes-Broer
Download or read book Metal Clusters at Surfaces written by Karl-Heinz Meiwes-Broer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the interaction with the contact medium, the properties of clusters may change or even disappear. Thus the physics of cluster-on-surface systems -- the main subject of this book -- is of fundamental importance. The book addresses a wide audience, from the newcomer to the expert. Starting from fundamental concepts of adsorbate-surface interactions, the modification of electronic properties through electron confinement, and concepts of cluster production, it elucidates the distinct properties of the new metallic nanostructures.
Book Synopsis Metal Clusters in Chemistry by : Pierre Braunstein
Download or read book Metal Clusters in Chemistry written by Pierre Braunstein and published by Wiley-VCH. This book was released on 2000-01-11 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal cluster chemistry is at the cutting edge between molecular and solid-state chemistry and has therefore had a great impact on the researchers working on organic, coordination, and solid-state chemistry, catalysis, physics, and materials science. The development of new sophisticated synthetic techniques has led to enormous progress in the synthesis of this diverse class of compounds. The number of clusters is growing rapidly, since the possible variations in the metal and ligand sphere are numerous. Modern bonding theories, such as the isolobal principle, have allowed a better understanding of the structures and properties of metal clusters, and thus paved the way for the usage of these versatile materials. Catalysis and nanomaterials are just two of the very promising application-oriented fields. Seventy six contributions, written by world experts in this research field, provide extensive coverage of different aspects of cluster chemistry, ranging from synthesis, structure determination, and dynamics to applications. Up-to-date information, including an impressive collection of structural data and illustrations, extensive coverage of the most important publications of the last decade, and many more features make this three-volume set a complete single-source guide for all researchers working in the area of cluster chemistry.
Book Synopsis Metal Clusters and Their Reactivity by : Zhixun Luo
Download or read book Metal Clusters and Their Reactivity written by Zhixun Luo and published by Springer Nature. This book was released on 2020-10-31 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses current techniques and instrumentation for cluster chemistry. It addresses both the experimental and theoretical aspects of gas-phase metal cluster reactivities, especially those pertaining to pollution removal, energetic reactions and corrosion and anticorrosion. These metal cluster systems have attracted enormous interest as they display a completely new class of physical, chemical, electronic, magnetic and catalytic properties. As these properties change with size and composition, it can thus be understood how their nature evolves from atoms to bulk solids. The book offers readers a basic understanding of the structural chemistry and reactivity of metal clusters in both gas-phase and wet chemistry. Further, the lessons they learn here regarding metal cluster chemistry will prepare researchers for the study of condensed phase dynamics that pertain to wet chemical synthesis, soft-landing deposition and cluster assembly.
Book Synopsis Protected Metal Clusters: From Fundamentals to Applications by :
Download or read book Protected Metal Clusters: From Fundamentals to Applications written by and published by Elsevier. This book was released on 2015-09-06 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protected Metal Clusters: From Fundamentals to Applications surveys the fundamental concepts and potential applications of atomically precise metal clusters protected by organic ligands. As this class of materials is now emerging as a result of breakthroughs in synthesis and characterization that have taken place over the last few years, the book provides the first reference with a focus on these exciting novel nanomaterials, explaining their formation, and how, and why, they play an important role in the future of molecular electronics, catalysis, sensing, biological imaging, and medical diagnosis and therapy. Surveys the fundamental concepts and potential applications of atomically precise metal clusters protected by organic ligands. Provides well-organized, tutorial style chapters that are ideal for teaching and self-study In-depth descriptions by top scientists in the field Presents the state-of-the art of protected metal clusters and their future prospects
Book Synopsis Optical Properties of Metal Clusters by : Uwe Kreibig
Download or read book Optical Properties of Metal Clusters written by Uwe Kreibig and published by Springer. This book was released on 2010-12-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Properties of Metal Clusters deals with the electronic structure of metal clusters determined optically. Clusters - as state intermediate between molecules and the extended solid - are important in many areas, e.g. in air pollution, interstellar matter, clay minerals, photography, heterogeneous catalysis, quantum dots, and virus crystals. This book extends the approaches of optical molecular and solid-state methods to clusters, revealing how their optical properties evolve as a function of size. Cluster matter, i.e. extended systems of many clusters - the most frequently occuring form - is also treated. The combination of reviews of experimental techniques, lists of results and detailed descriptions of selected experiments will appeal to experts, newcomers and graduate students in this expanding field.
Book Synopsis The Synergy Between Dynamics and Reactivity at Clusters and Surfaces by : Louis J. Farrugia
Download or read book The Synergy Between Dynamics and Reactivity at Clusters and Surfaces written by Louis J. Farrugia and published by Springer Science & Business Media. This book was released on 1995 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analogy between the chemistry of molecular transition metal clusters and the processes of chemisorption and catalysis at metal surfaces (the Cluster Surface analogy) has for a number of years provided an interplay between experimental and theoretical inorganic and physical chemists. This collaborative approach has borne fruit in the use of well-defined modes of metal-ligand bonding in discrete molecular clusters, models for metal-ligand binding on surfaces. Some of the key topics discussed in this book are: mechanisms of the fluxional behaviour in clusters in the liquid phase and the connections with diffusion processes on extended surfaces, and the role of metal-metal bond breaking in diffusion; analogies in the structure of chemisorbed species and related ligands on metallic clusters; analogies between benzene surface chemistry on extended metal surfaces and on metal surfaces in molecular cluster compounds with particular reference to structural distortions; and the role of mobile precursors for dissociation of chemisorption on extended metals and on clusters.
Book Synopsis Recent Development in Clusters of Rare Earths and Actinides: Chemistry and Materials by : Zhiping Zheng
Download or read book Recent Development in Clusters of Rare Earths and Actinides: Chemistry and Materials written by Zhiping Zheng and published by Springer. This book was released on 2016-10-21 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical structure and bonding. The scope of the series spans the entire Periodic Table and addresses structure and bonding issues associated with all of the elements. It also focuses attention on new and developing areas of modern structural and theoretical chemistry such as nanostructures, molecular electronics, designed molecular solids, surfaces, metal clusters and supramolecular structures. Physical and spectroscopic techniques used to determine, examine and model structures fall within the purview of Structure and Bonding to the extent that the focus is on the scientific results obtained and not on specialist information concerning the techniques themselves. Issues associated with the development of bonding models and generalizations that illuminate the reactivity pathways and rates of chemical processes are also relevant. The individual volumes in the series are thematic. The goal of each volume is to give the reader, whether at a university or in industry, a comprehensive overview of an area where new insights are emerging that are of interest to a larger scientific audience.
Download or read book Metal Clusters written by G. zu Putlitz and published by . This book was released on 1986-11-01 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis COMPLEXES BIMETALLIQUES ET FONCTIONNALISATION DE CLUSTERS MOLECULAIRES by : ISOLDE.. BACHERT
Download or read book COMPLEXES BIMETALLIQUES ET FONCTIONNALISATION DE CLUSTERS MOLECULAIRES written by ISOLDE.. BACHERT and published by . This book was released on 1997 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS LE CADRE DE CETTE THESE, NOUS NOUS SOMMES INTERESSES A L'ETUDE DE CLUSTERS HETERONUCLEAIRES PORTANT DES LIGANDS ISOELECTRONIQUES DE LA BIS(DIPHENYLPHOSPHINO)METHANE (DPPM) : LA BIS(DIPHENYLPHOSPHINO)AMINE (DPPA) ET UN DERIVE FONCTIONNALISE (PH#2P)#2N(CH#2)#3SI(OET)#3 (DPPASI) QUI PEUT PERMETTE L'UTILISATION ULTERIEURE DES CLUSTERS FORMES DANS LE PROCEDE SOL-GEL. DANS CETTE PERSPECTIVE NOUS AVONS SYNTHETISE DE NOUVEAUX CLUSTERS MIXTES TETRANUCLEAIRE TELS QUE PD#2CO#2(CO)#7(-DIPHOSPHINE)#2 ET DES CLUSTERS TRINUCLEAIRE TELS QUE PD#2CO(CO)#2(-DIPHOSPHINE)#3PF#6 (DIPHOSPHINE = DPPA, DPPASI). L'UTILISATION DU LIGAND DPPA QUI POSSEDE UN PROTON (N-H) PLUS ACIDE QUE CEUX DU GROUPEMENT CH#2 DE LA DPPM NOUS A PERMIS DE DEVELOPPER UNE NOUVELLE VOIE DE FONCTIONNALISATION DE CE TYPE DE CLUSTERS. DES ETUDES COMPARATIVES ENTRE LES SYSTEMES PREPARES CI-DESSUS ET D'AUTRES CLUSTERS HETEROMETALLIQUES POSSEDANTS DIFFERENTS LIGANDS ASSEMBLEURS (DPPM, DPPA ET DPPA FONCTIONALISE) ONT ETE ENTREPRISES. CELLES-CI ONT MIS EN EVIDENCE UNE GRANDE SIMILITUDE DANS LES REACTIVITES DES DEUX DIPHOSPHINES DPPM ET DPPA ET LA TENDANCE PAR CONTRE A FORMER DES COMPLEXES CHELATES AVEC LES LIGANDS DPPA FONCTIONNALISES. DES ETUDES ELECTROCHIMIQUES ONT ETE ENTREPRISES EN COLLABORATION AVEC LE GROUPE DU PROF. ZANELLO A SIENNE (ITALIE). ELLES SOULIGNENT, NOTAMMENT, DES DIFFERENCES INTERESSANTES DANS LES COMPORTEMENTS REDOX DES CLUSTERS SELON LA NATURE DES LIGANDS COORDINES. DES CLUSTERS PORTANT LA PHOSPHINE DPPASI ONT ETE UTILISES DANS LE PROCEDE SOL-GEL. LEUR POLYCONDENSATION AVEC LE TETRAETHOXYSILANE (TEOS) CONDUIT A DES CLUSTERS INCORPORES DANS UNE MATRICE DE SILICE (XEROGELS), HAUTEMENT DISPERSES ET POTENTIELLEMENT ACTIFS EN CATALYSE HETEROGENE. CETTE METHODE A EGALEMENT MONTRE UN POTENTIEL POUR LA FORMATION DE PARTICULES METALLIQUES DANS UNE MATRICE DE SILICE QUI REPRESENTERAIENT UNE FAMILLE ORIGINALE D'ESPECES REACTIVES EN CATALYSE. LA GRANDE SIMILITUDE DE REACTIVITE ENTRE LES DEUX DIPHOSPHINES DPPM ET DPPA A ORIENTE NOTRE INTERET VERS L'ETUDE DE LA DPPA POUR LA SYNTHESE DES CLUSTERS PAR DIVERSES METHODES DEJA DEVELOPPEES DANS LE CAS DE LA DPPM. NOUS AVONS AINSI PREPARE DE NOUVEAUX CLUSTERS PAR DES REACTION D'OUVERTURE D'UN LIGAND DPPA CHELATE, DES REACTIONS EN PRESENCE D'ELECTROPHILES...
Book Synopsis Advances in Metal and Semiconductor Clusters by : M.A. Duncan
Download or read book Advances in Metal and Semiconductor Clusters written by M.A. Duncan and published by JAI Press. This book was released on 1998-08-10 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cluster Materials is the fourth volume of the highly successful series Advances in Metal and Semiconductor Clusters. In this volume the focus is on the properties of clusters which determine their potential applications as new materials. Metal and semiconductor clusters have been proposed as precursors for materials or as actual materials since the earliest days of cluster research. In the last few years, a variety of techniques have made it possible to produce clusters in sizes varying from a few atoms up to several thousand atoms. While some measurements are performed in the gas phase on non-isolated clusters, many cluster materials can now be isolated in macroscopic quantities and more convenient studies of their properties become possible. In this volume the authors focus on measurement of optical, electronic, magnetic, chemical and mechanical properties of clusters or of cluster assemblies. All of these properties must fall into acceptable ranges of behaviour before useful materials composed of clusters can be put into practical applications. As evidenced by the various work described here, the realisation of practical products based on cluster materials seems to be approaching rapidly.
