Global ETD Search
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 9 of 9 for “"Unsaturated molecules"”.
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Development of Main Group Systems for Small Molecules Activation
… diverse applications in areas such as small molecules activation and catalysis. The present thesis has two major directions: 1) find new types of FLP; 2) demonstrate their unusual reactivity. Alkali metal species are shown to mimic FLP behavior. The combinations of Lewis acidic alkali metal …
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Thermal and photochemical reactions of large metallaborane clusters and functionalizations of boron nitride nanosheets
… reactions between metallaboranes and unsaturated molecules. The complex 1.1was found to photoreact with both terminal and internal alkynes to afford the carborane with general formula [7-R-8-R'-7,8-nido-C<sub>2</sub>B<sub>9</sub>H<sub>10</sub>][NMe<sub>4</sub>] (2) in good yield. This …
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Preparation of benzoenyne -allenes, enyne -isocyanates and enyne -carbodiimides and their applications in the synthesis of polycyclic aromatic hydrocarbons and heterocycles
… of generating biradicals and/or zwitterions from unsaturated molecules having nitrogen and oxygen atom in the conjugated system. Due to the ring strain, cycloaromatization of cyclopentene-based enyne-isocyanates and enyne-carbodiimides underwent predominately C 2-C7 cyclization pathway. The …
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Exploration of [2+2+2] cyclotrimerisation reactions of alkynes. A new methodology for the synthesis of small molecules to probe biological systems
… [2+2+2] cyclotrimerisation of alkynes and unsaturated molecules to form bi- and tricyclic heterocyclic derivatives, some with structural resemblance to the quinocarcin family of natural products. Three different dialkynes (1,5-di(prop-2-yn-1-yl)pyrrolidin-2-one 2.117a, …
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Exploration of [2+2+2] cyclotrimerisation reactions of alkynes. A new methodology for the synthesis of small molecules to probe biological systems
… [2+2+2] cyclotrimerisation of alkynes and unsaturated molecules to form bi- and tricyclic heterocyclic derivatives, some with structural resemblance to the quinocarcin family of natural products. Three different dialkynes (1,5-di(prop-2-yn-1-yl)pyrrolidin-2-one 2.117a, …
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The adsorption of organic molecules on metal and semiconductor surfaces
… of coadsorbates on the adsorption of organic molecules bonded to Cu(111). First, the influence of coadsorbed CO on the structure and bonding of thiophene was investigated using a combination of LEED, AES, TPD and synchrotron-based NIXSW and NEXAFS techniques. It was found that the coadsorption …
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Reactivity of Aluminum Carbenoid with Unsaturated Substrates
… complex NacNacAl towards a variety of unsaturated molecules were determined. Reaction of NacNacAl with one equivalent of benzophenone affords η2(C,O) adduct III-2 that undergoes cyclization reactions with benzophenone (III-3), aldimine (III-4), quinoline (III-5), pyridine (III-6), …
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Transformations of bridging ligands in diiron complexes: unconventional routes to new functionalized multisite bound organic frames
… 1) We have extended the assembling between small unsaturated molecules and bridging carbyne ligands in diiron complexes to other species. In particular, we have investigated the coupling between olefins and thiocarbyne, leading to the synthesis of thioallylidene bridging diiron complexes. Then, we …
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Systematic Investigation of Intermolecular Interactions in NEXAFS Spectroscopy
… degree of Rydberg-valence mixing in saturated molecules and π-π interactions of unsaturated molecules. The effects of π-π interactions were systematically studied by using paracyclophane (PCP) molecules, in which the benzene/benzene separation distance can be systematically varied through the …