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Showing 1 to 20 of 33 for “"bimetallic complexes"”.
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Two approaches to the design and synthesis of bimetallic complexes
<p>Dirhodium complexes have been known for their catalytic reactivities toward C-H bond activation for nearly two decades. However, both experimental and theoretical studies have not given a clear explanation on the roles of each metal in the reactivities, largely due to the limited number of …
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Biologically-Inspired Bimetallic Complexes for the Activation of Small Molecules
The activation of dihydrogen has only been observed indirectly through the photolytically-induced H/D exchange of [Fe2(mu-H)(SR) 2(CO)4(PR3)2]+ Fe-only hydrogenase models with D2. The diphosphine diruthenium complex Ru2(S2C3H6)(CO)4(PCy 3)2 oxidatively adds dihydrogen to produce the dihydride …
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Magnetic Resonance Behavior and Metal-Metal Interactions in Bimetallic Complexes of Pyridylmethylketazine
… obtained interesting proton NMR results on such complexes; they found the normally broad peaks of the Cu(II) and Ni(II) complexes to become much sharper when Co(II) was also in the complex. Because of their results, work was done here to determine the proton relaxation rates, their implications …
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An Investigation of the Chronopotentiometric Oxidation of Bimetallic Complexes of Divalent Platinum and Tin
Made available in DSpace on 2014-12-09T17:36:24Z (GMT). No. of bitstreams: 1 7000829.pdf: 2361281 bytes, checksum: 050933aa5753177a419d65bc01f7b46c (MD5) Previous issue date: 1969
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The synthesis and characterization of a new kind of tagged Ru-Pt bimetallic DNA binding agent
… probe for the characterization of supramolecular complexes as well as for the future investigation of the metal complex−DNA interaction process. In this project the phosphorous ligand PEt₂Ph was selected as the TAG due its ability to provide an easy ³¹P NMR probe in the research. The LA represents …
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Investigations into alkene hydration and alkene oxidation catalysis
Bimetallic Ni complexes Ni21M and Ni21R and monometallic transition metal complexes were investigated as possible alkene hydration catalysts under a multitude of different reaction conditions. All attempts at performing this catalytic reaction failed to give any alcohol products. Catalytic …
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The Synthesis and Photophysical Properties of New Polymetallic Complexes Designed for Use in Photoinitiated Electron Collection
… the majority of the synthesis was completed. The bimetallic complexes [(tpy)M(tpp)Ru(LLL)]²⁺, where M = Ru or Os and LLL = Cl₃, (CH₃CN)₃, tpp, or (dpq)Cl, and the model monometallic complexes [(tpy)M(tpp)]²⁺, where M = Ru or Os, and [(tpy)Ru(CH₃CN)₃]²⁺ were synthesized and characterized using …
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The Design, Synthesis and Study of Mixed-Metal Ru,Rh and Os, Rh Complexes with Biologically Relevant Reactivity
A series of mixed-metal bimetallic complexes [(TL)2M(dpp)RhCl2(TL)]3 (M = Ru and Os, terminal ligands (TL) = phen, Ph2phen, Me2phen and bpy, terminal ligands (TL) = phen, bpy and Me2bpy ), which couple one Ru or Os polyazine light absorber (LA) to a cis-RhIIICl2 center through a dpp bridging ligand …
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Tuning the Photophysical and Biological Properties of a Series of Ruthenium-Based Chromophores and Chromophore Coupled Cisplatin Analogs with Substituted Terpyridine Ligands
… other biomolecules. A series of supramolecular complexes of the form [(TL)RuCl(dpp)](PF₆) and [(TL)RuCl(BL)PtCl₂](PF₆) with the BL (bridging ligand) = 2,3-bis(2-pyridyl)pyrazine (dpp) and varying TL (terminal ligand) (tpy = 2,2'':6'',2''-terpyridine, MePhtpy = 4''-(4-methylphenyl)- …
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Synthesis, Structure, and Catalytic Activity of Bimetallic Rhodium Complexes in the Hydroformylation and Allylic Oxidation of Alkenes
… a series of diphenylformamidinato-Rh(I) bimetallic complexes C1 – C4. The same ligands were also reacted with either the dirhodium trifluorotetraacetate [Rh2(TfOAc)4] or the traditional acetate [Rh2(OAc)4] dimers. Thes reactions yield a series of diphenylformamidinato-Rh(II) homoleptic …
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Tuning the ground and excited state properties of a series of polymetallic tridentate complexes incorporating Ru(II) or Os(II) as the chromophore
… of a series of monometallic and polymetallic complexes incorporating the tridentate polypyridyl bridging ligand tpp (where tpp = 2,3,5,6-tetrakis(2-pyridyl)pyrazine) and an investigation of their ground and excited state properties. A series of ruthenium monometallic chromophore complexes has …
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Introduction of a Novel Family of Bitopic N-Heterocyclic Carbenes
… and their corresponding thiones and gold complexes. The unique structure of this family allows for the formation of bimetallic complexes, main-chain organometallic polymers, and supramolecular structures. These complexes allow for significant versatility in catalytic properties, …
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Late transition metal bimetallics for photocatalytic hydrogen production, M-X and C-H bond activation
… design elements employed have focused on bimetallic complexes of late transition metals that exhibit an unusual two-electron mixed valence ground state. Initial studies focused on the mechanistic elucidation of the reported photocatalytic production of hydrogen from homogeneous hydrohalic …
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Sharing the Burden of Reactivity: Synthesis, Characterization, and Reactivity of Phosphino-Alkoxide First-Row Transition Metal Complexes
… This dissertation describes the synthesis of complexes featuring earth-abundant 3d transition metals in monometallic complexes, bimetallic complexes, and frustrated Lewis pairs. Specifically, a phosphino-alkoxide ligand was developed to promote high-spin complex formation, produce …
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Distal hydrogen-bonding effects and cofacial bimetallic salen architectures for oxygen activation chemistry
… active manganese salophen or salen platform. The complexes proved to be proficient catalase mimics (disproportionation of hydrogen peroxide to water and oxygen). Detailed spectroscopic, computational, and structure-function relationship studies elucidated the key redox, steric, and secondary …
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Mixed-Metal Ruthenium-Platinum Polyazine Supermolecules: Synthesis, Characterization and Exploration of DNA Binding
… properties of select ruthenium polyazine complexes, the approach was to bind the cis-PtIICl2 active site of cisplatin to ruthenium light absorbers using the dpq and dpb bridging ligands (where dpq = 2,3-bis(2-pyridyl)quinoxaline, dpb = 2,3-bis(2-pyridyl) benzoquinoxaline). These complexes …
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Synthesis and characterization of transition and some group 14 metal complexes containing ligands derived from 2-acetylpyridine and hydrazide derivatives, and their antiplasmodium activities
… and characterization of two sets of metal complexes containing ligands derived from 2-acetylpyridine and hydrazide derivatives is reported. The first set consists of complexes containing a ligand derived from 2-acetylpyridine and S-methyldithiocarbazate while the second set is of complexes …
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Towards the Design and Syntheses of Novel Triads Comprising Single Robson-Type Macrocyclic Dicopper(II) Cores Flanked by Two Terminal Polypyridyl Ruthenium(II) Complexes.
… toward the syntheses of new tetranuclear bimetallic complexes of copper(II) and ruthenium(II) was realized. The designed triads comprise a central binuclear copper(II) complex with a tetraiminodiphenolate macrocyclic Robson-type compartmental ligand. In the envisioned complexes, the …
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Construction of Metal-Organic Cages with Bimetallic Motifs and Self-Assembly of a Molecular Knot
… of metal-organic polyhedra built around bimetallic complexes. The components were specifically chosen to increase the chances of serendipitous and unexpected results coming about. A series of such structures are presented; a dicopper(I)- and disilver(I)-based octahedra, hetero-bimetallic …
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