Search for dissertations about: "rotation barrier"
Showing result 1 - 5 of 14 swedish dissertations containing the words rotation barrier.
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1. Internal rotation in molecules : a nuclear magnetic resonance relaxation study
Abstract : In order to study the internal rotation of methyl-type groups in molecules, the carbon-13 nuclear magnetic resonance (NMR) spin-lattice relaxation times (T1) and nuclear Overhauser enhancement factors (n) are measured for some terpenes (borneol, camphor, isopinocampheol and α-pinene), for octafluorotoluene and for 1-methylnaphtalene. In addition, deuterium NMR T1 data are presented for 1-methylnaphtalene-d10. READ MORE
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2. Flexibility – a tool for chirality control in asymmetric catalysis
Abstract : This thesis deals with the design and synthesis of ligands for asymmetric catalysis: palladium catalyzed allylic alkylations, and rho-dium and iridium catalyzed hydrogenations of olefins. Chirally flexible phosphepine ligands based on biphenyl were synthesized and their properties were studied. READ MORE
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3. Self-adaptable catalysts : Importance of flexibility and applications in asymmetric catalysis
Abstract : The topic of this thesis is the design and synthesis of biaryl-based self adaptableligands for asymmetric metal catalysis. The results discussed in papers I-III are covered, together with some unpublished results concerning substrate-adaptable catalysts. A general survey of self-adaptable catalysts is presented first. READ MORE
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4. Microwave determination of conformation and barrier to internal rotation in the gas phase of some smaller organic molecules
Abstract : .... READ MORE
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5. Global Turbulent EquiPartition (TEP) in Tokamak Plasma
Abstract : We studied analytically and numerically the establishment of global turbulent equipartition (TEP) of magnetised electrons in a tokamak plasma. This allows us to investigate self-consistently the inhomogeneous distributions of the plasma density, the electron and the ion temperatures, the generation of radial electric field and the poloidal and the toroidal rotation in the turbulent tokamak plasma. READ MORE