<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Untersuchungen zu Oligogallanen mit Gruppe 15 Substituenten"^^ . "On the present thesis the focus was set on the synthesis and structure investigation of novel\r\nsubvalent oligogallanes. Since gallium has an electron deficiency and acts as a strong lewis acid it is\r\nnot trivial to get low oxidation state compounds. Disproportion reactions often lead to Ga(+III) and\r\nelemental Ga(0), so it is essential to avoid oxygen, water and in many cases strong donor solvents\r\nlike THF. Many reactions were observed where the mere warming to room temperature led to\r\nundesired byproducts. A convenient method to get access to gallium in low oxidation states is the\r\nsonicated “GaI”. It was used for most of the compounds presented in this work.\r\nIn the first part neutral and anionic phosphorous compounds are used to stabilize and shield\r\nthe sensitive gallium cores from decomposition. Suitable ligands were di-tert-Butyl-,\r\ndi-Phenylphosphanes or mixtures of them combined at one phosphor atom. In this manner several\r\nmolecules could be synthesized with two to four gallium atoms. Two of the maintained structures\r\ncontain three connected metal atoms with the oxidation states (II)-(I)-(II).\r\nIn the second part novel nitrogen ligand compounds are described with special focus on\r\namidinates in different coordination forms. In the given literature they are usually formed by\r\ndeprotonation of dialkylamidines or by nucleophilic attack of BuLi derivates on carbodiimides. In\r\nthis work the nucleophilic attack of alkyl- and silylamides on nitriles is compared and thereby the\r\nformation of two types of coordination to the gallium metal."^^ . "2012-12-03" . . . . . . . "Marc"^^ . "Herrmann"^^ . "Marc Herrmann"^^ . . . . . . "Untersuchungen zu Oligogallanen mit Gruppe 15 Substituenten (PDF)"^^ . . . "Dissertation Marc Herrmann Final.pdf"^^ . . . "Untersuchungen zu Oligogallanen mit Gruppe 15 Substituenten (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Untersuchungen zu Oligogallanen mit Gruppe 15 Substituenten (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Untersuchungen zu Oligogallanen mit Gruppe 15 Substituenten (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Untersuchungen zu Oligogallanen mit Gruppe 15 Substituenten (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Untersuchungen zu Oligogallanen mit Gruppe 15 Substituenten (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #14178 \n\nUntersuchungen zu Oligogallanen mit Gruppe 15 Substituenten\n\n" . "text/html" . . . "000 Allgemeines, Wissenschaft, Informatik"@de . "000 Generalities, Science"@en . . . "500 Naturwissenschaften und Mathematik"@de . "500 Natural sciences and mathematics"@en . .