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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"paddlewheel"”.
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Synthesis and Application of Tunable Mo2 and W2 Tetraguanidinate Paddlewheel Complexes
… dimolybdenum and ditungsten tetraguanidinate paddlewheel complexes have proven to be the strongest reducing agents known. Strong single and double electron donors can be used for applications from H2 production to difficult organic transformations like C–Cl bond cleavage and crosscoupling …
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Dirhodium(II,II) paddlewheel complexes conjugated to a polypyridyl tris-amine scaffold: synthesis and application as asdjncaslpre-catalysts in the hydroformylation of 1-octene
… spectrometry) techniques where applicable. The paddlewheel structure of the complex and pseudo-planar nature of the formamidine N-CN system was confirmed by Single crystal X-ray diffraction analyses. The activity of the synthesized complexes and metallodendrimers were evaluated as catalyst …
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Ionic conductivity transitions in antiperovskite ionic conductors
… including octahedral tilt disordering, paddlewheel mechanism and double paddlewheel mechanism. Carrying out temperature-dependent synchrotron XRay diffraction, differential scanning calorimetry, impedance spectroscopy, neutron diffraction, nuclear magnetic resonance and ab initio …
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Modeling the active sites of non-heme diiron metalloproteins with sterically hindered carboxylates and syn N-Donor ligands
… Diiron(ll) Complexes: Capture of the Paddlewheel Geometric Isomer The synthesis and characterization of diiron(ll) complexes supported by 9- triptycenecarboxylate ligands (-O2CTrp) is described. The interlocking nature of the triptycenecarboxylates facilitates formation of quadruply …
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Enhancing CO2 mass transfer in algal raceway ponds through wave generation
… ° and 39 °), slope height (9 cm and 10 cm) and paddlewheel rpm (19.8 and 28.9). The measured responses included the fluid hydrodynamics, CO2 mass transfer rate and energy demand. These responses were also measured for a slope that was designed to create waves similar to shoaling ocean waves. …
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A Computational Analysis of Supported and Unsupported Group 6 Transition Metal-Metal Bonds Based on the Natural Orbitals for Chemical Valence (NOCV) and the Extended Transition State (ETS) Techniques
… and the quadruply (σ2, π4, δ2) bonded paddlewheel complexes.
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Analysis and Chemical Applications of Metal–Metal Bonds and Large Language Models
… intelligence (AI). Redox–active dimolybdenum paddlewheel complexes were developed to probe second–sphere charge effects, revealing a quantifiable relationship between ligand charge and Mo≣Mo redox behavior. Building on this platform, a quadruply bonded dimolybdenum–based organometallic …
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Synthesis, characterization, and anticancer activity of arene mono-ruthenium and heteroleptic mixed-valent diruthenium complexes
… of diruthenium complexes led to the formation of paddlewheel-type complexes having a general chemical formula [Ru2(O2CCH3)3(R-ap)Cl] (C1 - C8). On the other hand, the preparation of mono-ruthenium complexes led to the formation of the complexes [RuCl2(η6 - C6H5OCH2CH2OH)(R)] (C10 - C12), and the …
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Controlling the Properties of Polymer Metal-Organic Frameworks and Cages Through Polymer Ligand Design
… a RAFT polymer ligand for the synthesis of Cu-paddlewheel, isophthalic acidbased bulk polyMOC powders is developed. The crystallinity and morphology of the polyMOCs can be tuned by addition of varying amounts of free isophthalic acid. These polymer/MOC hybrids represent a unique morphology and …
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Identifying the dominant physical processes for mixing in full-scale raceway tanks
… of Prandtl’s first kind induced by the bends, paddlewheel pulsation, and boundary layer development. These structures are found to overwhelm the presence of the cellular currents, and indicate that flows in the straight portions of the RWT reactor are a complex composite of boundary layer flow, …
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Probing Exciton Dynamics in Metal–Organic Frameworks
… the angular sensitivity of these interactions, a paddlewheel pillared MOF structure effectively blocks parasitic singlet energy transfer from a pyrene donor to a porphyrin acceptor by anchoring their transition dipoles at 90° to each other. Chapter 3 brings MOFs’ nuclear degrees of freedom into …
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Design and Synthesis of Photoactive Metal-Organic Frameworks for Photon Upconversion and Energy Transfer Studies
… (dpbz), comprising ZnTCPP/Zn paddlewheel layers. Across this series, the porphyrin spacing was approximately 6 Å, 11 Å and 16 Å for pyz, bpy and dpbz, respectively. The photophysical properties of the MOFs were explored using stead-state diffuse reflectance spectroscopy and …
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Applications of electronic structure theory to problems in strong-field chemistry, inorganic chemistry, and nanomaterial systems
… due to steric interactions. Chapter 6 covers a paddlewheel dinculear Cu(II) complex synthesized by the Winter group. This complex has the shortest Cu--Cu separation reported to date and electronic structure theory is used to explore the cause of this small separation. A simple model is proposed …
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Building and Exploring Databases of Porous Materials for Adsorption Applications
… be part of one of these families: CPO-27, Cu-Cu paddlewheel, IRMOFs or zirconium-oxide MOFs. Structures with three-dimensional porous channels and/or with halogen surface functionalisation also seemed to have greater performance. I extended the developed methods to the identification of COFs in …
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Enhancing CO2 mass transfer in large scale algal raceway ponds through wave generation
… and commissioned for this project. At constant paddlewheel rotation, a large reduction in fluid velocity was observed on introducing the slope. Higher fluid velocities result in more turbulent flow, better mixing and reduces algae settling in areas of low fluid velocity. The effect of the lower …
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Synthesis and Characterization of Metal-Organic Frameworks Organized by the Strong π...π Stacking 1,8-Naphthalimide Synthon
… of</p> <p>three similar copper(II) paddlewheel complexes with different axial ligands,</p> <p>Cu2(Lala)4(THF)2] (1), [Cu2(Lala)4(HLala)] (2) and [Cu2(Lala)4(py)(THF)] (3). A similar -</p> <p>reaction using THF and Lphg leads to the formation of [Cu2(Lphg)4(THF)2] (4). With the</p> …