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Showing 1 to 18 of 18 for “"single crystal X-ray crystallography"”.
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Multinuclear NMR studies on solution structures and dynamics of triosmium hydrido carbonyl phosphine cluster compounds
… structure of each isomer has been determined by single-crystal X-ray crystallography. The solution structures and dynamics have been studied by extensive $\sp{13}$C NMR studies, including $\sp{13}$C$\{\sp1$H$\}$ COSY and $\sp{13}$C spin saturation transfer experiments.
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Synthesis and characterization of dirhodium(II) formamidinyl complexes: preliminary studies as catalyst precursors for the allylic oxidation of cyclohexene
… complex, C5 was structurally characterized by single crystal X-Ray crystallography revealing a paddle-wheel type complex. Allylic oxidation reactions using the binuclear Rh complexes showed that these are active for cyclohexene conversion giving a range of products. Solvent coordination could …
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Microwave-assisted Synthesis of Modified Cyclopentadienyl Iridium and Rhodium Chloro-bridged Dimers
… microwave reaction and directly compared through single-crystal X-ray crystallography. Finally, the dimeric complexes were evaluated as potential oxidation catalysts. The modified HCp*R (R = isopropyl, n-butyl, isobutyl, sec-butyl, n-pentyl, n-hexyl, nheptyl, n-octyl, phenyl, benzyl, phenethyl, …
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Synthesis, characterization, and reactivity of low valent technetium phosphine complexes
… a combination of spectroscopic techniques and single crystal X-ray crystallography. The metal-metal bonded ditechnetium bis(dppm) motif is retained in the reaction products. Chapter 2. The reduction of ammonium pertechnetate with bis(diphenylphosphino)methane (dppm), and with diphenyl-2-pyridyl …
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Chemistry and biology of tricarbonyl complexes of technetium and rhenium
… M(CO)3(LoEt) were structurally characterized by single crystal X-ray crystallography. In both cases, the ligand LOEt was bound to the metal center in a tridentate fashion utilizing an 000 donor set. The ligands LOR can be used as models for facially coordinated triaqua groups owing to their …
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Synthesis and characterization of electronic materials for photovoltaic applications
… have been synthesized and characterized through Single Crystal X-Ray Crystallography, Four Point Probe Conductivity, and Powder Diffraction. These oligomers have a well-defined structure and are solution processable from a variety of solvents which can then be used as models to predict and study …
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Synthesis and biological evaluation of 1,4-benzodiazepin-2-one analogues with antitrypanosomal activity
… were characterised, in the solid state, by single crystal X-ray crystallography. Biological assays of the library of compounds against Trypanosoma brucei brucei (T. b brucei) revealed a range of trypanocidal activities. A first generation library activity showed biological activity as low as …
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Exploring the Synthesis, Structure, and Reactivity of Phosphorus-Chalcogen Heterocycles
… with an emphasis on NMR spectroscopy and single crystal X-ray crystallography.
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Synthesis and Coordination Chemistry of Water-soluble Phosphines: Application to Ru-Catalyzed Hydration of Nitriles in Aqueous and Biphasic Media
… and ESI-MS) and in the solid state (IR, and single-crystal X-ray crystallography).The air-stable and water-soluble ruthenium arene complexes are active in catalytic hydration of nitriles to amides in water at 100 °C under air with tolerance toward ether, hydroxyl, nitro, bromo, aldehyde, …
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Development of a high throughput screen for the expression of membrane proteins and their purification and crystallisation
… structure, which can be determined by single crystal X-ray crystallography. However, membrane proteins are one of the most difficult protein classes to work with, which is reflected by the small number of available membrane protein structures. Protein crystallography requires milligram …
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Designing Volatile Molybdenum Compounds for Vapour-Phase Deposition
… structures have been determined using single-crystal X-ray crystallography. The volatility and thermal stability of all compounds have also been assessed using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), respectively. Although many of the compounds …
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Structural characterisation and absolute stereochemistry of some degraded carotenoids from New Zealand honeys
… ¹H and ¹³C NMR spectroscopy, and single-crystal X-ray crystallography, indicating the parent alcohol was 4,5-dihydro-1',5-dihydroxy-2',4,8',8'-tetramethylspiro[furan-2(3)H,7'[6']oxabicylco[3.2.1]oct[2']ene]-4'-one. Comparison of NMR-derived NOE and coupling constant data of …
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Enhancing the cooperative binding properties of1,1'-bis(1,2,3,4-tetrahydroisoquinolines)
… of π-deficient systems, of which the X-ray crystal structures of three N-arenemethyl derivatives were elucidated. These are each closely related in conformation about the C1-C1' axis. Reaction of two examples of the N-arenealkyl compounds with copper(II) and palladium(II) chlorides, …
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Ligand Effect on Gold Nanomolecules Demonstrated Using Aliphatic, Aromatic and Bulky Thiolate Ligands
… feasibility to elucidate their structure by single crystal X-ray crystallography. They have distinct number of Au atoms (n) and thiolate (-SR, R-hydrocarbon chain) ligands (m) with molecular formula of the form [Aun(SR)m]. AuNMs are made of a gold core protected by a thiolate-monolayer and …
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Flouride Ion Donor-Acceptr Properties of cis-OsO2F4 and Lewis Acid Properties of OsO3F2 and XeOF4
… which has been characterized by single crystal X-ray crystallography and low-temperature Raman spectroscopy. The structure of the salt consists of a closely associated ion-pair in which a fluorine atom from the anion coordinates to the cation rendering the osmium atom …
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An investigation of beryllium coordination chemistry using electrospray ionisation mass spectrometry
The electrospray ionisation mass spectrometric behaviour of various complexes of beryllium have been investigated in this thesis. These beryllium complexes were prepared in situ on a small scale by preparing appropriate molar mixtures of the Be²⁺ ion with ligands in a range of solvent systems. In …
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The catalytic hydrogenation of carbon-carbon and carbon-nitrogen multiple bonds by a cobalt(I) complex
… NMR, EPR, and FT-IR spectroscopies, as well as single crystal X-ray crystallography is described. The interconversion between a series of low-spin cobalt complexes in the +3, +2 and +1 oxidation states provides a platform for which to study two-electron chemistry with cobalt. The reactivity of …
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Homochiral Crystals for Selective Synthesis
… sulfide ligands and copper(I) halides and their crystal structures were determined by single-crystal X-ray diffraction. The aim was to prepare coordination polymers that crystallize as conglomerates in order to use them in total spontaneous resolution. The anionic and neutral ligands were varied …