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Showing 1 to 20 of 42 for “"organometallics"”.
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Reaction of Organometallics With Diazonium Salts
Made available in DSpace on 2014-12-05T19:37:33Z (GMT). No. of bitstreams: 1 6004006.pdf: 3645054 bytes, checksum: b429e784d64abbe732e99dba2d395aff (MD5) Previous issue date: 1960
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A Computational Study on 18+δ Organometallics
The B3LYP density functional has been used to calculate properties of organometallic complexes of Co(CO)3 and ReBr(CO)3, with the chelating ligand 2,3-bisphosphinomaleic anhydride, in 19- and 18-electron forms. The SBKJC-21G effective core potential and associated basis set was used for metals …
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A NEW CLASS OF LUMINESCENT ORGANOMETALLICS -DIETHYNYLRHODACYCLOPENTADIENES
The main objective in this project is to develop a greater understanding of the unusual photophysical properties of 2,5-bis(arylethynyl)rhodacyclopentadienes. Three distinct and unusual photophysical properties were found in the 2,5-bis(arylethynyl)-rhodacyclopentadienes: (i) long-lived singlet …
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Pressure Tuning Spectroscopy of Metal Cluster Compounds and Organometallics
… upon various metal cluster compounds and organometallics was studied through the use of electronic absorption and infrared spectroscopies. The systems studied were chosen for their use as potential models for chemisorbed metallic surfaces, and to gain a better fundamental understanding of …
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High oxidation state organometallics and their charge transfer materials
This research has been directed toward the systematic design and synthesis of highly oxidizing complexes. These complexes have been used as components in the molecular synthesis of solid state materials displaying cooperative electronic interactions. Complexes of the type CpVX$\sb3$ (Cp = …
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Exploiting cooperative effects in s-Block organometallics for new applications in synthesis and catalysis
… 2 metals, this thesis advances the use of polar organometallics in catalysis, in particular intermolecular hydroamination processes; as well as other key stoichiometric transformations, namely deprotonative metallation and C-F bond activation.Group 1 alkyl compounds MCH2SiMe3 (M = Li, Na or K) …
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Novel Methods For The Analysis Of Organometallic compounds For The Natural Environment
… applications. Specific applic.,ations of organometallics include, polymer stabilisation, biocidal uses, agricultural uses, catal1tic applications and as additives in petrol. The use of organometallic compounds as biocides results in considerable anthropogenic input of organometallics into …
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Thermal and dynamic processes in deposition, growth, and etching of materials: I. Thermal and collision-induced activation of alkyl intermediates on aluminum. II. Chemical vapor deposition and growth of silicide on copper
… bear direct implications to the synthesis of organometallics and metal etching, are identified.
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Alternativní příprava 1-(difenylfosfino)-1'-(N,N-dimethylaminomethyl)ferrocenu
… a jejich porovnáním s literaturou (M. E. Wright, Organometallics, 1990, 9, 853). Koordinační vlastnosti této sloučeniny byly studovány na jejích zlatných komplexech. Konkrétně byl připraven komplex chlorido-[1-(difenylfosfino)-1'-(N,N-dimethylamino- methyl)ferrocen]zlatný, ze kterého byl …
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Mechanochemistry: Redefining the Paradigm of Organic Chemistry
… photomechanochemistry and synthesis of organometallics. This research investigates different aspects of organic chemistry through mechanochemical perspective by unveiling the reactivity of Bertagnini’s salts as aldehyde surrogates for the synthesis of N-heterocycles and reductive …
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The use of organotellurium heterocycles as precursors for novel organometallic compounds
… heterocycles to act as precursors for novel organometallics is also recognised owing to the relatively facile elimination of the heteroatom from these systems. Thus, 2-telluraindane reacts with Fe3(CO)12 to yield a novel organometallic compound of formula C16H16.Fe(CO)3, arising from the …
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Stereochemistry of small molecules: Configurational and conformational control
… each other in modern stereochemistry. Chiral organometallics feature prominently in organic synthesis as reactive intermediates. The possibility of exploring their stereochemistry in synthesis is associated with the configurational stability of the metal-bearing stereogenic center. We were …
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New Methods for Palladium-catalyzed Decarboxylative Benzylation, Arylation and Dearomatization Reactions
… tolerance due to the avoidance of preformed organometallics and basic reagents. Since the initial reports by Saegusa and Tsuji on decarboxylative allylation (DcA) of β-ketoesters in 1980, this concept remained relatively unexplored until the independent reports from Tunge and Stoltz in 2004. …
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Synthesis and Chemical Bonding of Lithium and Alkaline-Earth Metal-based Carbometallates
… application of carbometallates as precursors for organometallics. To address this issue, new carbometallates were synthesized using only highly polarizing lithium and alkaline-earth elements as counter-cations. Three new nickel-based quaternary carbometallates (Li2Sr3[Ni(C2)3], Li2Ba3[Ni(C2)3], …
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Synthesis and characterization of ruthenium complexes with (N-N)(P-P) and (N-P)2 donor sets
… structure-NLO property relationships for organometallics as well as their NLO mechanisms are far less explored than those of organic molecules and inorganic salts. The greater flexibility and exceptionally large NLO responses of organometallic compounds attracts chemists to this field. …
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Synthesis and characterization of ruthenium complexes with (N-N)(P-P) and (N-P)2 donor sets
… structure-NLO property relationships for organometallics as well as their NLO mechanisms are far less explored than those of organic molecules and inorganic salts. The greater flexibility and exceptionally large NLO responses of organometallic compounds attracts chemists to this field. …
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Surface reaction mechanisms as a function of surface composition, adsorbate coverage, and adsorbate acidity: I. Trimethylgallium on metal-treated silicon. II. Hexafluoropentanedione, methanol, and acetone on copper
… the surface. The reactivities of the group III organometallics on group III metal-rich surfaces depend on the electronegativity differences between the coordinated metal atom in the adsorbate and the metal on the surface. Reactions favor the formation or maintenance of the strongest alkyl-metal …
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Organometallic redox-interfaces for selective electrochemical separations
… excess of competing electrolyte. In particular, organometallics and associated metalcomplexes offer an attractive material platform, due to their flexible metal-ligand design and as a consequence, extensive control allowed of their electronic properties. The first major thrust is the molecular …
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Study of Synthesis, Reactions and Enantiomerization of C<sub>α</sub>-Chiral Grignard Reagents
The development of chiral organometallics for asymmetric synthesis is a topic of significant research in the recent past. The most studied in this class are the chiral organolithium reagents with many reported examples. The primary focus of our research is the development of C<sub>α</sub>-chiral …
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Photoredox activation of SF₆ for fluorination, on-demand automated titration of organometallic reagents in continuous flow, and progress toward an enantioselective synthesis of bedaquiline
… hazards associated with handling pyrophoric organometallics and minimizes user-related error. Additionally, the UV/Vis spectrometer enables a level of precision to be achieved that is unattainable with the naked eye. The system also provides the possibility to be integrated with batch and …
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