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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Synthese neuartiger siliciumorganischer Riechstoffe sowie neutraler penta- und hexakoordinierter Silicium(IV)-Komplexe / Synthesis of novel silicon-containing odorants as well as neutral penta- and hexacoordinate silicon(IV) complexes

Metz, Stefan January 2008 (has links) (PDF)
Im Rahmen dieser Arbeit wurden Silaanaloga bereits bekannter organischer Riechstoffe und deren Derivate synthetisiert und auf ihre olfaktorischen Eigenschaften untersucht. Die erhaltenen Riechstoffe zählen zur Klasse der polycyclischen moschusartigen Riechstoffe bzw. zu den acyclischen holzig-ambraartigen Riechstoffen Des weiteren wurden penta- und hexakoordinierte Silicium-Komplexe dargestellt und strukturell charakterisiert, die unter anderem Silicium-Iod-, Silicium-Selen- und Silicium-Tellur-Bindungen aufweisen. Durch NMR-Untersuchungen im Festkörper und in Lösung konnten Erkenntnisse über die dynamische Umlagerung dieser Komplexe gewonnen werden. / In the course of this dissertation sila analogues of known organic odorants and their derivatives were synthesized and studied for their olfactory properties. The obtained odorants belong to the group of polycyclic musk odorants and acyclic woody-ambery odorants, respectively. Furthermore, penta- and hexacoordinate silicon complexes were synthesized and structurally characterized, amongst them were compounds with Si-I, Si-Se, and Si-Te bonds. NMR studies in the solid state and in solution gave information about the dynamic rearrangement of these complexes.
2

6-[(2-Hydroxy-5-methylanilino)methylidene]-4-nitrocyclohexa-2,4-dien-1-one

Böhme, Uwe, Fels, Sabine 14 January 2022 (has links)
The title compound, C14H12N2O4, is nearly planar with a dihedral angle between the aromatic rings of 1.41 (8)°. The phenolic O atom is deprotonated and the N atom of the azomethine unit carries the proton, thereby forming an intra­molecular N—H...O hydrogen bond. In the crystal, the mol­ecules form inversion dimers via pairwise O—H...O hydrogen bonds.

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