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Showing 1 to 20 of 29 for “"diimine"”.
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The Synthesis, Reactivity and Electrochemical Study of Metallocene Substituted α-Diimine Ligands
The synthesis of transition metal complexes containing redox-active ligands or ligands with redox-active substituents have been areas of ongoing interest in chemical research. To date, only a handful of examples involving redox-active ligands containing main group centres have been reported. This …
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Synthesis and characterization of various coinage metal complexes with bridging diimine ligands
… of coinage metal complexes with various bridging diimine ligands. It has 75pp, 4 tables, 55 figures and the references for the study of group 11 elements. It discusses one main project divided by three chapters describing in general the synthesis; structure and spectroscopic studies of Silver (I) …
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DERIVATIZATION OF DIIMINE TRICARBONYL Re(I) COMPLEXES FOR COOPERATIVE CATALYSIS AND SURFACE IMMOBILIZATION
… by designing appropriate catalytic systems. Diimine-tricarbonyl rhenium compounds have demonstrated excellent activity in photo and electrochemical CO2 reduction. A low-energy pathway has been postulated in which Re(I)-based catalysts mediate CO2 reduction via binuclear interactions. However, …
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Diimine complexes of ruthenium(ii), rhenium(i) and iron(ii): from synthesis to DFT studies
… rhenium(I) tricarbonyl complexes containing the diimine ligands 2,2’-bipyrazine (bpz) and 5,5’-dimethyl-2,2’-bipyrazine (Me2bpz) are discussed. When compared to similar rhenium(I) tricarbonyl complexes of 2,2’-bipyridine (bpy) and 2,2’-bipyrimidine (bpm), the Me2bpz complexes are comparable to …
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Potential platinum DNA-Metallointercalators : synthesis, characterisation and 1H NMR studies on [Pt(diimine)(N,N-di(n-butyl)-N'-acylthioureato)]+PF6 complexes in solution
A series of mixed-ligand [Pt(diimine)(N,N-di(n-butyl)-N'-acylthioureato)fPF6- complexes has been synthesised and fully characterised (where diimine is: 1,10 phenanthroline; 4,7-diphenyl-1,10- phenanthroline; 2,2'-bipyridyl; 4,4'-dimethyl-2,2'-bipyridyl and 4,4'-di-tert-butyl-2,2'-bipyridyl and acyl …
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The Versatility of Aluminum Systems: Ligand Transfer Agents and Polymerization Catalysts
… - ͭ Bu₂-phenoxide) and α-diimine (α-diimine = [(2,6-ⁱPr₂-C₆H₃)N═C(Me)]₂) derivatives are studied in various contexts. During ethylene polymerization with LCu(II) catalysts in the presence of methylaluminoxane (MAO), ligand (L) transfer is observed from the copper centre to …
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Design, Synthesis and Catalytic Evaluation of Mono- and Polynuclear Organometallic Materials as Hydroformylation Catalysts
… catalytic potential of new water-soluble alpha-diimine Rh(I) complexes, alpha-diimine Rh(I) metallodendrimers and a water-soluble binuclear Rh(I) complex. New water-soluble disulfonated 1,4-diazabutadiene (DAD) ligands bearing either an ethyl or acenaphthene backbone were prepared. The …
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Mononuclear and Dinuclear Complexes of Allylated alpha-Diimines as Catalysts for the Polymerization of Ethylene
… of synthesis involves precursors consisting of a diimine moiety coordinated to a late or early transition metal and a metallocene or half sandwich moiety. In order to achieve these goals, some alpha-diimine compounds were functionalized with allyl or alkyl halide groups and then coupled with a …
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Development of new late transition metal catalysts for the oligomerisation of ethene
… bisiminopyridyl and nickel and palladium a-diimine catalysts for the polymerisation and oligomerisation of l-alkenes has stimulated interest in the use of late transition metals as catalysts for these processes.
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Polymerization and Isomerization of Olefins using Late-Transition Metal Complexes
… polymerization catalysts. The mechanism of α-diimine-palladium and nickel catalyzed olefin polymerization is well understood. By understanding the fundamental steps of olefin polymerization, catalysts can be rationally designed to achieve a polymer with desired properties. This dissertation …
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Synthesis of mixed ligand, water soluble square planar platinum (II) complexes and an investigation of their association with haematin and potential to inhibit the formation of synthetic malaria pigment
… (II) ion coordinated to acylthiourea and diimine ligands. The diimines used included both substituted and unsubstituted 2,2’-bipyridines and 1,10-phenanthrolines. 2-phenyl pyridine was also utilised as a ligand. It has been shown that the uncoordinated planar ligands interact weakly with …
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Tetraazamacrocyclic ligands and their copper complexes
… diamines has allowed the isolation of metal-free diimine macrocycles without recourse to metal template' or 'high dilution' techniques. In several cases these diimines were successfully reduced to yield the related tetraamine macrocycles. For the 15-membered macrocycle, …
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Photophysical studies of silver(I), platinum(II), palladium(II), and nickel(II) complexes and their use in electronic devices.
… investigation into the electronic structure of M(diimine)X2 (M= Pt(II), Pd(II), or Ni(II); X = dichloro, or dithiolate ligands) complexes and their interactions with an electron acceptor or Lewis acid. Chapter 3 assesses the use of some of these complexes in dye sensitized solar cells (DSSCs); it …
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Synthesis and characterization of ruthenium complexes with (N-N)(P-P) and (N-P)2 donor sets
… ligands (dppe, dppb and dppf) and one diimine ligand (tert-Bu-bpy) were selected for this study as the diphosphine and diimine ligands, respectively. Ruthenium halide and mono-alkynyl complexes were obtained successfully. Their optical, electrochemical and spectroelectrochemical …
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Synthesis and characterization of ruthenium complexes with (N-N)(P-P) and (N-P)2 donor sets
… ligands (dppe, dppb and dppf) and one diimine ligand (tert-Bu-bpy) were selected for this study as the diphosphine and diimine ligands, respectively. Ruthenium halide and mono-alkynyl complexes were obtained successfully. Their optical, electrochemical and spectroelectrochemical …
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Selbstorganisation von Helicaten und molekularen Tetraedern
… coordination studies with linear dicatechol diimine ligands, which possess due to the variation of the spacer different geometrical and electronical properties, were made. An enantiomerically pure dinuclear triple-stranded titanium(IV) helicate is formed from a dicatechol diimine ligand with …
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STEREOCHEMICAL STUDIES OF 1,2-DIAMINOCYCLOHEXANE AND SOME OF ITS DERIVATIVES
… was prepared by the NaBH(,4) reduction of the diimine obtained by the condensation of benzaldehyde and (-)-(R,R)-DACH enantiomer.</p><p>Three diamines were added to suspensions of lithium aluminum hydride (LAH) in ether to produce chirally modified LAH reagents. Propiophenone was reduced to …
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