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Metal molecular

Dyes and Pigments. Several thousand metric tons of metallated or metal coordinated phthalocyanine dyes (10) are sold annually in the United States. The partially oxidized metallated phthalocyanine dyes are good conductors and are called molecular metals (see Semiconductors Phthalocyanine compounds Colorants forplastics). Azo dyes (qv) are also often metallated. The basic unit for a 2,2 -azobisphenol dye is shown as stmcture (11). Sulfonic acid groups are used to provide solubiHty, and a wide variety of other substituents influence color and stabiHty. Such complexes have also found appHcations as analytical indicators, pigments (qv), and paint additives. [Pg.172]

Catalysis by molecular metal clusters. E. L. Muetterties andM. J. Krause, Angew. Chem., Int. Ed. Engl., 1983, 22,135-148 (106). [Pg.62]

SOLUTION (a) Determine if the compound is ionic or molecular. Metal and nonmetal Ionic... [Pg.59]

Solid type Molecular Molecular Molecular Metallic Networklonic... [Pg.775]

As described in Chapter H, there are four different kinds of solids network, molecular, metallic, and ionic. Each is held together by a different kind of interaction, so each has its own solubility characteristics. [Pg.838]

Oxide- and Zeolite-supported "Molecular" Metal Clusters Synthesis, Structure, Bonding, and Catalytic Properties... [Pg.211]

Oxide- and Zeolite-Supported Molecular Metal Clusters... [Pg.213]

The literature of metal-support interactions includes httle about the possible chemical bonding of metal clusters or particles to supports. Supported molecular metal clusters with carbonyl ligands removed have afforded opportunities to understand the metal-support interface in some detail, and the results provide insights into the bonding of clusters to supports that appear to be generalizable beyond the small clusters to the larger particles of conventional supported metal catalysts [6]. [Pg.219]

Gates BC (2005) Oxide- and Zeolite-supported Molecular Metal Clusters Synthesis, Structure, Bonding, and Catalytic Properties. 16 211-231 Gibson SE (nee Thomas), Keen SP (1998) Cross-Metathesis. 1 155-181 Gisdakis P, see Rosch N (1999) 4 109-163 Gdrling A, see Rosch N (1999) 4 109-163... [Pg.283]

Molecular Metal Complexes Compounds of this type do not form delocalized electronic bands in the sohd state, and their color is due to intramolecular electronic transitions. Many complexes of transition metals with organic ligands belong to this class. complexes with phenanthroline (red/colorless) and Ru + + with 2,2 -... [Pg.625]

Transition metal oxides, rare earth oxides and various metal complexes deposited on their surface are typical phases of DeNO catalysts that lead to redox properties. For each of these phases, complementary tools exist for a proper characterization of the metal coordination number, oxidation state or nuclearity. Among all the techniques such as EPR [80], UV-vis [81] and IR, Raman, transmission electron microscopy (TEM), X-ray absorption spectroscopy (XAS) and NMR, recently reviewed [82] for their application in the study of supported molecular metal complexes, Raman and IR spectroscopies are the only ones we will focus on. The major advantages offered by these spectroscopic techniques are that (1) they can detect XRD inactive amorphous surface metal oxide phases as well as crystalline nanophases and (2) they are able to collect information under various environmental conditions [83], We will describe their contributions to the study of both the support (oxide) and the deposited phase (metal complex). [Pg.112]

Fierro-Gonzalez, J.C., Kuba, S., Hao, Y. et al. (2006) Oxide- and zeolite-supported molecular metal complexes and clusters physical characterization and determination of structure, bonding, and metal oxidation state, J. Phys. Chem. B, 110, 13326. [Pg.138]

Routes to Molecular Metals with Widely Variable Counterions and Band-Filling... [Pg.224]

A major barrier to understanding fundamental relationships between molecular architecture, electronic structure, and charge transport in molecular metals derives from our inability to introduce poten-... [Pg.224]

These results illustrate that electrochemical techniques can be employed to synthesize a vast range of [Si(Pc)0]n-based molecular metals/conductive polymers with wide tunability in optical, magnetic, and electrical properties. Moreover, the structurally well-defined and well-ordered character of the polymer crystal structure offers the opportunity to explore structure/electro-chemical/collective properties and relationships to a depth not possible for most other conductive polymer systems. On a practical note, the present study helps to define those parameters crucial to the fabrication, from cheap, robust phthalocyanines, of efficient energy storage devices. [Pg.233]

The electrocrystallization and characterization of a novel molecular metal which displays both electronic and ionic conduction has been reported. The complex Li0.6(15-crown-5-ether)[Ni-(dmit)2] H20 is composed of stacks of [Ni(dmit)2] units which provide pathways for electronic conduction. The stacks are separated by parallel stacks of 15-crown-5-ether moieties in a channellike formation which facilitates ion conduction. The salt has a room temperature conductivity of 240 Scm-1. Temperature-dependent magnetic susceptibility and NMR measurements were used to prove the existence of Li+ movement within the crown ether channels.1030... [Pg.339]

A structural classification of 8 is difficult due to the fact that an arrangement of metal atoms as in 8 is uncommon in the whole field of molecular metal clusters. For this reason, detailed understanding of the bonding properties in 8 requires quantum chemical calculations. Theoretical analysis seems to be especially applicable to learning more about the bond between the two tetrahedra, which appears at first to be an isolated metal-metal bond between two metal atoms in the formal oxidation state zero. [Pg.262]

A metal cluster can be considered as a polynuclear compound which contains at least one metal-metal bond. A better definition of cluster catalysis is a reaction in which at least one site of the cluster molecule is mechanistically necessary. Theoretically, homogeneous clusters should be capable of multiple-site catalysis. Many heterogeneous catalytic reactions require multiple-site catalysis and for these reasons discrete molecular metal clusters are often proposed as models of metal surfaces in the processes of chemisorption and catalysis. The use of carbonyl clusters as catalysts for hydrogenation reactions has been the subject of a number of papers, an important question actually being whether the cluster itself is the species responsible for the hydrogenation. Often the cluster is recovered from the catalytic reaction, or is the only species spectroscopically observed under catalytic conditions. These data have been taken as evidence for cluster catalysis. [Pg.125]


See other pages where Metal molecular is mentioned: [Pg.247]    [Pg.61]    [Pg.774]    [Pg.312]    [Pg.216]    [Pg.219]    [Pg.196]    [Pg.225]    [Pg.225]    [Pg.227]    [Pg.228]    [Pg.229]    [Pg.231]    [Pg.233]    [Pg.235]    [Pg.237]    [Pg.235]    [Pg.41]    [Pg.266]    [Pg.293]   
See also in sourсe #XX -- [ Pg.120 ]

See also in sourсe #XX -- [ Pg.182 ]




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Adsorption of atomic, molecular, and cluster particles on metal oxides

Advantages of metal-coordination interactions in molecular recognition

Alkylidyne-metal complexes molecular structure

Central atom concepts molecular metals

Chemical bonds Metallic bonding Molecular orbital

Diboraheterocycle metal complexes molecular structures

Effect on metal aluminophosphate molecular

Effect on metal aluminophosphate molecular sieve synthesis

Extended Huckel molecular orbital calculations, transition metal

Group 5 metal halide clusters molecular structure

Highest occupied molecular orbital transition-metal complexes

Hquids, ionic, metallic, molecular

ID molecular metals

Lowest unoccupied molecular orbital transition-metal complexes

Metal Ion Mediated Molecular Imprinting

Metal alkoxides molecular complexity

Metal aluminophosphate molecular

Metal aluminophosphate molecular sieves

Metal atom Molecular orbitals

Metal binding sites, molecular recognition

Metal cations, molecular sensors

Metal cluster molecular

Metal complexes, of molecular

Metal discrete molecular systems

Metal enolates molecular aggregates

Metal enolates molecular structure

Metal ions, molecular imprinting

Metal organic frameworks molecular sieves

Metal oxide-adsorbate interactions molecular adsorption

Metal redox molecular sieves

Metal salts Molecular sieves

Metal surface molecular orbital description

Metal surfaces, molecular orbitals

Metal-Substituted Mesoporous Silica Molecular Sieves

Metal-ligand complexes molecular orbitals

Metal-organic molecular beam epitaxy

Metal-oxide frameworks molecular materials

Metal-solution interface molecular approach

Metal-substituted Molecular Sieves as Catalysts for Allylic and Benzylic Oxidations

Metalization-molecular dissociation

Metalization-molecular dissociation transition

Metallic bond molecular-orbital theory

Metallic bonding molecular orbital theory

Metallic bonds molecular-orbital model

Metallic molecular

Metallic molecular

Metallic molecular-orbital model

Metallic substances molecular orbital theory

Metals coordinated molecular, reactions

Metals in the Molecular Environment

Metals molecular orbital model

Metals molecular orbital theory

Metals, band theory Molecular orbital

Microporous metal oxides - octahedral molecular sieves

Mixed-metal clusters, molecular

Mixed-metal clusters, molecular dynamics

Molecular Orbitals for Metal Sandwich Compounds

Molecular Rearrangements in Polynuclear Transition Metal Complexes

Molecular Segregation at Periodic Metal Nano-Architectures on a Solid Surface

Molecular Structures II Compounds of Transition Metals

Molecular Structures of Surface Metal Oxides

Molecular Structures of Transition Metal Complexes

Molecular adsorption on metals

Molecular catalysts designing, with active transition metals

Molecular catalysts designing, with metals

Molecular catalysts designing, with transition metals

Molecular cationic metal complexes

Molecular complexity transition metal alkoxides

Molecular design of supported metal oxide

Molecular distortions in metal-containing compounds W

Molecular distortions in metal-containing compounds bond length and angle changes

Molecular distortions in metal-containing compounds resonance Raman excitation profiles

Molecular distortions in metal-containing compounds spectroscopy

Molecular dynamics simulation coordinated metal ions

Molecular electronics metal-alkyne complexes

Molecular geometry transition metals

Molecular level, metal-electrolyte interface

Molecular mechanics amine metal complexes

Molecular metal carbonyl cluster

Molecular metal complexes

Molecular metal oxides , class

Molecular metal, neutral

Molecular metals, structure

Molecular modeling metal complexes with open

Molecular modelling metal complexes

Molecular modelling metal-polymer interactions

Molecular modelling transition metal complexes

Molecular orbital calculations, transition metal

Molecular orbital diagram, octahedral transition metal

Molecular orbital diagram, octahedral transition metal complex

Molecular orbital diagrams metallic bonding

Molecular orbital symmetry conservation in transition metal catalysis

Molecular orbital theory metallic-like bond

Molecular orbitals metal carbonyls

Molecular orbitals metal-carbonyl complexes

Molecular orbitals transition metal complexes

Molecular orbitals transition metal compound

Molecular orbitals transition metal coordination

Molecular precursors for tailored metal

Molecular precursors for tailored metal catalysts

Molecular sieves containing transition metals in the framework

Molecular sieves, chiral metal complex

Molecular transition metal complexes

Molecular transition metal compounds

Molecular transition metal macrocycles

Molecular transition metal siloxide

Molecular transition metal siloxide complex

Molecular transition-metal complexes in solids

Molecular vs. solid-state condensed octahedral transition-metal chalcogenide clusters rule-breakers again

Molecular weight metal coordination polymers

Molecule-metal potentials, molecular

Organic Molecular Beam Deposition of Pentacene on Clean Metal Surfaces

Other Transition Metal-substituted Molecular Sieves

Oxidation with metal substituted molecular sieve

Phthalocyanine molecular metals

Phthalocyanine-based molecular metals

Polymerized species, molecular surface metal oxides

Polynuclear transition metal complexes molecular rearrangements

Principle of Molecular Imprinting for Metal Complexes on Surfaces

Reactions of NHC-coordinated Metal Complexes with Molecular Oxygen

Reactivity of Molecular Silicon-Transition-Metal Compounds

Rotaxanes Containing Transition Metals From Electronic to Molecular Motion

Structural Characteristics of Molecular Metal Clusters

Structural Insight into Transition Metal Oxide Containing Glasses by Molecular Dynamic Simulations

Supported Metal Complexes—Molecular Analogues Bonded to Surfaces

Supported metal oxides molecular structures

Surface metal oxide species molecular structures

Transfer products, polymer-metal systems, molecular

Transition metal catalysis, molecular

Transition metal catalysis, molecular orbital symmetry conservation

Transition metal catalysts molecular weight control

Transition metal ions mesoporous molecular sieves

Transition metal rings 5-type molecular orbitals

Transition metal rings valence molecular orbitals

Transition metal-containing molecular

Transition metal-containing molecular machines

Transition metal-containing molecular sieves

Transition metals Fenske-Hall molecular orbitals

Transition metals designing functional molecular systems

Transition metals molecular structures

Transition-Metal Molecular Clusters

Transition-Metal Molecular Clusters B. F. G. Johnson and J. Lewis

Transition-metal atoms, molecular

Transition-metal atoms, molecular systems

Triflate catalysts, molecular metal

Triflate catalysts, molecular metal reactions

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