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Showing 1 to 20 of 37 for “"mixed ligand"”.
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Crystal engineering of mixed-ligand metal-organic frameworks
… in the design of these materials using the mixed ligand approach add to variation in structures and thus provide a further means of tailoring of properties. A novel two dimensional, mixed ligand MOF has been synthesised based on 1,3,5 benzenetricarboxylic acid, 4,4' bipyridine N,N' dioxide …
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Porosity studies of isoreticular mixed-ligand metal-organic frameworks
The syntheses of four novel mixed-ligand metal-organic frameworks (MOFs) are reported. Isoreticular, Zn(II)-based mixed-ligand MOFs with formulae [Zn(μ2-ia)(μ2-bpe)]n·nDMF (1) and [Zn(μ2-mia)(μ2- bpe)]n·nDMF (2), where ia = isophthalate, mia = 5-methoxyisophthalate, bpe = 1,2-bis(4-pyridyl)ethane …
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Curvature driven phase separation in mixed ligand coated gold nanoparticles
… solely to the chemical functionalities of the ligand head-groups. However, the morphology of these monomolecular layers on gold nanoparticles plays as important of a role as the surface chemistry. Intriguing phase-separation phenomena have been observed for mixed self-assembled monolayers (SAM) …
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Mixed-ligand diruthenium complexes: theoretical modelling and interpretation of electronic absorption spectra
… Cl, Br or I, are influenced by the axial ligand (X) lability and solvent coordination at the axial site. These complexes have Ru(II) and Ru(III) metal centers that can be written as Ru₂⁵⁺. Researchers have observed distinctive spectroscopic and electrochemical characteristics of these …
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Synthesis and Characterisation of Porous Mixed-Ligand Metal-Organic Frameworks for Sorption Studies
… coordinate bonds between metal ions and organic ligands. The permanent porosity of MOFs enables them to be applied as gas storage and, carbon capture and utilization materials. The main portion of this study describes the synthesis of new porous MOFs from simple building blocks. A total of four …
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The design and synthesis of mixed ligand metal organic frameworks for xylene inclusion
… The aim of the study is to design and synthesize mixed ligands metal organic frameworks (MOFs) for xylene inclusion. The first part of the study involves the synthesis and characterisation of five pyridine N-donor and O-donor ligands, namely: …
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Crystal engineering of mixed-ligand metal-organic frameworks based on simple carboxylate and bipyridyl ligands
… on the crystal engineering of MOFs based on mixed ligands which may ultimately be used in the gas storage of pollutants, greenhouse gases or fuel. Two novel 2D mixed-ligand MOFs, both based on manganese, 4,4’-bipyridine and 1,3,5- benzenetricarboxylic acid, have been prepared and fully …
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Crystal engineering of 2-periodic Ni- and Co-based, isoreticular, mixed ligand metal-organic frameworks for sorption studies
… A MOF is composed of metal ions and organic ligands, and the type of ligand can affect or control pore size, shape, geometry, inner surface, and structural rearrangement of the materials. This allows for tailoring of the structure/properties, and this one of the most appealing features of …
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Probing the mechanisms of action and resistance of mixed-ligand platinum(II) complexes with dual-stage antiplasmodium activity
Malaria remains one of the largest parasitic disease burdens worldwide, with the vast majority of that burden occurring on the African continent. The ongoing high number of malaria cases and deaths is in part attributable to the emergence and spread of resistance to most clinical chemotherapeutics. …
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Investigation of the ligand shells of homo-ligand and mixed-ligand monolayer protected metal nanoparticles : a scanning tunneling microscopy study
… core surrounded by a self-assembled monolayer of ligands (a 3-D SAM or ligand shell), their appeal and utility stem from their numerous unique properties-many of which arise and are modulated by the intimate spatial and electronic contact between core and shell. The ligand shell controls the …
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Physical Studies of Iron(ii) Spin Equilibrium Complexes Containing Hexadentate Ligands and Thermodynamic and Kinetic Studies of Rhodium(i) Phosphine Complexes and Mixed Ligand Rhodium(iii) Dihydrides
Made available in DSpace on 2014-12-13T20:09:52Z (GMT). No. of bitstreams: 1 7624106.pdf: 3625386 bytes, checksum: 4a1fd1fad11c3c2153940ac0d416a04a (MD5) Previous issue date: 1976
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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 haematin …
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Design, synthesis and analysis of Isoreticular, 2-Periodic, Co(II)/(Mn(II) mixed- and Zn(II) single-ligand metal-organic frameworks for sorption of energy- and environmentally-relevant molecules
… from metal ions or clusters and organic ligands, offer structural versatility where the choice of ligand influences pore size, geometry, flexibility, and adsorption properties. Mixed-ligand MOFs, incorporating two or more distinct ligands, enhance structural complexity and enable tuning …
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Synthesis and characterization of various coinage metal complexes with bridging diimine ligands
… 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) and …
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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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Synthesis of Heteroleptic Redox-active and Spin-crossover Complexes
… The intent behind incorporating the Schiff base ligand N-(8-quinolyl)salicylaldimine with some redox-active species into a mixed ligand complex featuring a d4-d7 metal ion center was to prime the material for spin-crossover based on strong intermolecular interactions that would enhance …
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Lithium-based inorganic-organic framework materials
… based on chiral, racemic and meso forms of the ligand, have been discovered, including eight anhydrous isomers of dilithium tartrate, Li2(C4H4O6). An experimental and computational study of their formation behaviour and energetics has shown that both kinetic and thermodynamic conditions can be …
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