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Showing 1 to 20 of 119 for “"bipyridine"”.
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Bipyridine Ligands for use in Polymer-Supported Iridium Catalyzed C-H Borylation
… linker to use in organic synthesis. Bipyridine ligands, such as 4, 4’-tert-butyl-bipyrine with an iridium precatalyst afford a highly efficient C-H borylation, but studies of polymer-supported bipyridine ligands have not been extensively researched. With an aim to exploring this …
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Nmr Contact Shifts of Some Benzamide, 2,2'-Bipyridine, and 1,10-Phenanthroline Complexes
Made available in DSpace on 2015-05-12T21:43:23Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6808267.PDF: 3466013 bytes, checksum: a23a4c59c7fec232096ca7ea3d08b141 (MD5) Previous issue date: 1967
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Nucleophilic additions on 2,2´-bipyridine and 1,10-phenantroline ligands in rhenium tricarbonyl complexes
Los ligandos 2,2’-bipiridina (bipy) y 1,10-fenantrolina (phen) han sido considerados inertes frente a nucleófilos en complejos de metales de transición. Como consecuencia, las reacciones de formación de enlaces en ligandos bipy o phen son inusuales. En la presente memoria se describen por primera …
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Microenvironments, Binding Interactions, and Photophysics of Polyelectrolyte-Bound Tris-(2,2'-Bipyridine)ruthenium(ii)
… decay kinetics of tris-(2,2$\sp\prime$-bipyridine)ruthenium(II) (Ru(bpy)$\sb3\sp{2+}$) upon immobilization in "organized" or inhomogeneous media. To gain a fundamental understanding of these factors and mechanisms it was necessary to characterize the interactions between the complex and …
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Reactivity of Polystyrene Bound Bipyridine and the Catalytic Potential of Its Transition Metal Complexes
Made available in DSpace on 2014-12-13T20:10:42Z (GMT). No. of bitstreams: 1 8004163.pdf: 2765042 bytes, checksum: 050ca02f1fa71eb3a7701f463c87bf7f (MD5) Previous issue date: 1979
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Controlling the Regio- and Enantioselectivity of Iridium-Catalysed Arene Borylation Using Sulfonated Bipyridine Ligands
… involved the design and synthesis of novel bipyridine ligands containing a distal anionic sulfonate group, that when bound to iridium can interact with substrates, either through ion-pairing or hydrogen bonding interactions, controlling the selectivity of the transformation. Building on …
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Investigation of Fluorescence and Fluorescence Polarization as a Probe of Surface-Bound Species (Zinc Tetraphenylporphyrin, Ruthenium Tris(bipyridine))
… and zinc tetraphenylporphyrin and ruthenium tris(bipyridine) were deposited onto glass, single crystal silicon and electrodes of indium oxide coated glass, pyrolytic graphite and thin gold films. Deposition was accomplished by (a) drying an aliquot of solution that had been loaded by syringe, (b) …
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Synthesis and Characterization of Carbon Monoxide Producers Bipyridine Flavonolate Palladium(II) and Platinum(II) Complexes: Potential Anti-Cancer Agents
… Herein is described the synthesis of seven novel bipyridine flavonolate palladium(II) and platinum(II) complexes with the property of releasing carbon monoxide, and their characterization with FTIR, UV-Vis, fluorescence, NMR, and ESI mass spectra. Their ability to release carbon monoxide was …
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Quenching of the Fluorescence of Tris (2 2-Bipyridine) Ruthenium(II) [Ru(bipy)3]2+ by a Dimeric Copper(II) Complex.
<p>The quenching of the [Ru(bipy)<sub>3</sub>]<sup>2+</sup> by Cu<sub>2</sub>L<sup>2+</sup> was studied and the data were plotted with the Stern-Volmer equation. The plot showed a break and was divided into 2 regions, <0.5 and >0.5 Cu<sub>2</sub>L<sup>2+</sup>: [Ru(bipy)<sub>3</sub>]<sup>2+</sup> …
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Development of iron (III) tetra(meso-aryl)porphyrins and N-annulated perylene diimide tethered rhenium (I) bipyridine supramolecular dyads for carbon dioxide conversion catalysis
… tetra(meso-aryl)porphyrin and rhenium (I) (2,2’-bipyridine) tricarbonyl chloride motifs, which are capable of highly selective and highly efficient CO2 conversion catalysis. Structure-property relationships described in this section helped guide the design of next generation organometallic …
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Synthesis and Optical Studies of Organoboron Compounds
… 2016, Higuchi reported photochromic boronium-bipyridine complexes. It washypothesized that the photochromism arose from radical species that form via the photooxidationof iodide and other anions by the boronium cations. Although EPR data was provided to supportthis hypothesis, the EPR data was …
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Probing Base Metal Coordination Complexes Using Electrospray Ionization Quadrupole Time-of-Flight Mass Spectrometry
… solutions in combination with five ligands: 2,2’-Bipyridine, 4,4’-Bipyridine, 2,2’-Bipyridine-4,4’-Dicarboxylic Acid, 1,10-Phenanthroline and the Baker Group’s SNS Ligand. Observations of these complexes were restricted to the monocations. Those combinations that successfully coordinated in the …
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Covalent Attachment of Coordinatively-Saturated Metal Complexes to Horse Cytochrome-C Lysines
… (bp = 2,2$\sp\prime$-bipyridine, cmbp = 4$\sp\prime$-methyl-2,2$\sp\prime$-bipyridine-4-carboxylic acid) have been covalently attached to horse cytochrome c via a carbodiimide-promoted condensation of the pendant carboxylate of the complexes with the $\varepsilon$-amine …
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A Break In Communication: The Synthesis, Characterization, DNA Binding and Photocleavage of a Novel Ruthenium Polypyridyl Complex Containing an Electronically Isolated Pyrene Group
… complex [Ru(bpy)2bpy-py]2+ (where bpy= 2,2’-bipyridine and bpy-py=N-(6-(4-(pyren-1-yl) butanamido) hexyl)-[2,2'-bipyridine]-5-carboxamide))) has been synthesized. The effect of electronically isolating the pyrene from the metal core on the complex’s ability to bind to and photocleave DNA was …
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Synthesis and Characterisation of N-substituted Pyrrole Monomers and Polypyrrole Films
… monomers employed, possessed either azide, 2,2’-bipyridine or nitrile moieties, as these species have been universally exploited in cycloaddition and coordination chemistry. Firstly, N-(10-azidodecyl)pyrrole, N-(3-azidopropyl)pyrrole and N-(2- azidoethyl)pyrrole were electropolymerised in the …
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Oxidative Addition As A New Route To Organometallic Polymers And Dendrimers
… {dollar}-di-tert-butyl-2,2{dollar}spprime{dollar}-bipyridine; 1c: (NN) = 4,4{dollar}spprime{dollar}-dimethyl-2,2{dollar}spprime{dollar}-bipyridine; 1d: (NN) = 4-vinyl-4{dollar}spprime{dollar}-methyl-2,2{dollar}spprime{dollar}-bipyridine) were shown to be useful precursors to polymers. …
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Sonogashira coupling reactions in the synthesis of near infra-red emitters and of star systems for the study of charge propagation in dendrimers
… 9,10-anthraquinones, Os(II) bis(2,2'-bipyridine) (3,8-diarylethynyl-1,10-phenanthroline) complexes and four star-shaped molecules incorporating the 4-benzoyl-N-alkylpyridinium cation."--Abstract, page iv.
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