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Showing 1 to 20 of 39 for “"Nickel Complexes"”.
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Organometallic chemistry of triazacyclononanes and high-valent nickel complexes
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01
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Synthesis and analysis of low-valent NHC supported nickel complexes
… of N-heterocyclice carbene (NHC) supported nickel complexes and their reactivity in bond-breaking and bond forming reactions. The body of this work discusses isolation of (NHC)Nickel(I) alkoxides and their subsequent chemical transformations into different (NHC)Nickel complexes. First, we …
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Development of systems for isolation of high-valent nickel complexes and their reactivity
… for the isolation and study of high-valent nickel and palladium compounds, chiral variants of these ligands were synthesized in attempts to isolate high-valent organometallic nickel complexes that could play a role in enantioselective crosscoupling reactions. Utilizing readily available …
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Computation of Phosphorus-31 NMR chemical shifts of nickel complexes using density functional theory
… shifts of phosphorus-containing ligands in nickel(0), nickel(II), and nickel(I) complexes is presented. Calculated shifts are directly compared to experiment. Many of these complexes are synthetically useful and on the cutting edge of rational catalyst design. Excellent results are obtained …
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From the reactivity of Pincer CCC nickel complexes to catalysis with simple nickel salts
The student, Gabriel Espinosa Martinez, accepted the attached license on 2018-04-16 at 11:38.
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Synthesis, Characterization And Reactivity Studies Of Nickel Complexes Supported By A Phosphinimine-Based Pincer Ligand
… species, including late transition metal complexes with metal–ligand multiple bonds. Herein, we report a series of novel nickel complexes supported by a pincer-type bis(phosphinimine) ligand framework {HN(1,2-C6H4N=PPh2Me)2}. Metalation of the ligand onto NiCl2(dme) formed the nickel …
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Synthesis And Characterization Of Nickel Complexes With Relevance To Nickel Acireductone Dioxygenase And Nickel Superoxide Dismutase
… presents an investigation of synthetic model complexes with relevance to the active site of Ni(II) acireductone dioxygenase (Ni-ARD) and Ni(II) superoxide dismutase (Ni-SOD). Acireductone dioxygenases (ARDs) are a unique set of enzymes found in the methionine salvage pathway that catalyze the …
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High and low valent nickel complexes supported by tridentate and tetradentate ligands relevant for C–C bond formation reactions
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-12-01
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Structural correlations in pentacoordinate zinc and nickel systems
… has been applied to five-coordinate zinc and nickel complexes in order to map the mechanism for a bimolecular ligand substitution reaction at typical tetrahedral and square-planar centres.
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Spectroscopic studies of Metal(II) complexes and application of the Ni(II) complexes to olefin oligomerisation catalysis
Complexes of some divalent first row transition metal ions with various ligands have been prepared. These included bis-complexes of β-ketoenolate ligands, nickel complexes of trialkylphosphine and nickel complexes containing phosphine and β-ketoenolate ligands, and finally, tris, bis and …
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Part I. Correlation of (carbon-13)-H Coupling Constant,j With the C-H Stretching Force Constant in Some Methyl Compounds. Part Ii. A Study of Duroquinone and Some of Its Nickel Complexes
Made available in DSpace on 2014-12-09T17:35:56Z (GMT). No. of bitstreams: 1 6808198.pdf: 3155145 bytes, checksum: 19de64e2040791bd626f0184d35b71bf (MD5) Previous issue date: 1967
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An investigation of the nickel (II) and cobalt (II) complexes employing pentadentate ligands derived from salicylaldehyde and bis (3,3'- aminopropyl) ether or sulfide
Complexes of the general formula M(X-SALDAPE) and M(X-SALDAPS) formed by the reaction of substituted salicylaldehydes and bis(3,3'-aminopropyl)ether or bis(3,3'-aminopropyl)sulfide with nickel(II) and cobalt(II) have been isolated. The complexes have been characterized by elemental analysis, mass …
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Robust Nickel Catalysts Supported By Biaryl-Bridged Pyridyl-N-Heterocyclic Carbenes For Carbon Dioxide Reduction To Value-Added Products
… carbene-based ligands and their corresponding nickel complexes. Ligand synthesis, structural characterization of complexes, and their application in electrocatalytic CO2 reduction are discussed.
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Interactions of small molecules with duplex DNA and lesion containing G-quadruplex DNA
… agents including the well-known platinum complexes, cisplatin and carboplatin. The two closely related nickel complexes, NiCR and NiCR-2H, exhibit significant differences in cytotoxicity towards MCF-7 cancer cells. In the first part of this work, we explain this difference using …
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Highly Efficient Catalysts for the Dimerization of α-Olefins
… potential of bis(imino)pyridin vanadium(III) complexes as catalysts for the oligomerization and dimerization of ethylene after activation with MAO. A series of new and literature known complexes was synthesized and tested for the homogeneous catalytic dimerization of propylene after activation …
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Binding study of nickel complex to protein by equilibrium dialysis
… active complex among a series of square planar nickel complexes in promoting DNA oxidation. This complex was synthesized and its structure was proven by electrospray mass spectroscopy, H-NMR, and elemental analysis. The H-NMR data also demonstrated that this complex has two vacant coordination …
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Metals in Chemistry and Biology: Computational Chemistry Studies
… of three transition metal (copper, chromium, and nickel) complexes and describes modeling studies performed on glutathione synthetase. (1) Copper nitrene complexes were computationally characterized, as these complexes have yet to be experimentally isolated. (2) Multireference calculations were …
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The application of novel multinuclear catalysts derived from dendrimeric ligands in the polymerization and oligomerization of unsaturated hydrocarbons
… ligands were converted to multinuclear nickel complexes by reaction with nickelacetate. The metal complexes were characterized by FTIR spectroscopy, elemental analysis and ESI mass spectrometry.Some of the dendritic complexes were evaluated as catalyst precursors in the oligomerization …
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