{"id":{"repo_id":"oldenburg","oai_identifier":"oai:oops.uni-oldenburg.de:96"},"canonical_url":"https://search.dev.ndltd.org/etd/oldenburg/oai:oops.uni-oldenburg.de:96","repository":{"repo_id":"oldenburg","name":"Carl von Ossietzky Universität Oldenburg","base_url":"http://oops.uni-oldenburg.de/cgi/oai2"},"display":{"title":"Neue Reaktionsweisen eines Tetragermabuta-1,3-diens und von Digermenen","abstract":"Hexakis(2,4,6-triisopropylphenyl)tetragermabuta-1,3-diene (1), which is accessible by a one-pot synthesis, decomposes at temperatures above 65 C to cleavage products which contain one to three Ge-atoms. The reaction of 1 with germanocene proceeds with exchange of an aryl- by a Cp-group and gives a tetragermacyclobutene. The attempted reaction of 1 with decamethylgermanocene did not succeed. However, the crystal structure of Ge(Cp*)2 could be determined. It fits well in the series of decamethylmetallocenes of group 14. The reaction of 1 with small amounts of O2 yielded a six-membered ring with an endocyclic Ge-Ge double bond containing a Ge-O bond. With maleic anhydride a tricyclic compound is formed with a Ge3-moiety in the molecule. Treatment of 1 with gold(I) iodide at 60 C furnished the first digermene-gold(I)-pi-complex. However, the analogous reaction of the correspondingly substituted digermene yielded solely a 1,2-diiododigermane, even at very low temperature.","abstract_html":"Hexakis(2,4,6-triisopropylphenyl)tetragermabuta-1,3-diene (1), which is accessible by a one-pot synthesis, decomposes at temperatures above 65 C to cleavage products which contain one to three Ge-atoms. The reaction of 1 with germanocene proceeds with exchange of an aryl- by a Cp-group and gives a tetragermacyclobutene. The attempted reaction of 1 with decamethylgermanocene did not succeed. However, the crystal structure of Ge(Cp*)2 could be determined. It fits well in the series of decamethylmetallocenes of group 14. The reaction of 1 with small amounts of O2 yielded a six-membered ring with an endocyclic Ge-Ge double bond containing a Ge-O bond. With maleic anhydride a tricyclic compound is formed with a Ge3-moiety in the molecule. Treatment of 1 with gold(I) iodide at 60 C furnished the first digermene-gold(I)-pi-complex. However, the analogous reaction of the correspondingly substituted digermene yielded solely a 1,2-diiododigermane, even at very low temperature.","abstract_has_math":false,"creators":["Schöpper, Annika"],"institution":"Universität Oldenburg","degree_name":null,"degree_level":"thesis.doctoral","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2006,"date_issued":"2006-09-01","date_published":"2006-09-01","updated_at":"2026-07-27T20:27:13Z","subjects":["[Keine Schlagwörter von Autor/in vergeben.]"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://oops.uni-oldenburg.de/96","outbound_label":"Repository record","outbound_source":"source_url"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Schöpper, Annika"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:publisher","label":"Institution","values":["BIS der Universität Oldenburg"]},{"key":"dc:type","label":"Dc Type","values":["doctoralThesis"]},{"key":"thesis:degree_level","label":"Degree Level","values":["thesis.doctoral"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Universität Oldenburg"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["[Keine Schlagwörter von Autor/in vergeben.]"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Hexakis(2,4,6-triisopropylphenyl)tetragermabuta-1,3-diene (1), which is accessible by a one-pot synthesis, decomposes at temperatures above 65 C to cleavage products which contain one to three Ge-atoms. The reaction of 1 with germanocene proceeds with exchange of an aryl- by a Cp-group and gives a tetragermacyclobutene. The attempted reaction of 1 with decamethylgermanocene did not succeed. However, the crystal structure of Ge(Cp*)2 could be determined. It fits well in the series of decamethylmetallocenes of group 14. The reaction of 1 with small amounts of O2 yielded a six-membered ring with an endocyclic Ge-Ge double bond containing a Ge-O bond. With maleic anhydride a tricyclic compound is formed with a Ge3-moiety in the molecule. Treatment of 1 with gold(I) iodide at 60 C furnished the first digermene-gold(I)-pi-complex. However, the analogous reaction of the correspondingly substituted digermene yielded solely a 1,2-diiododigermane, even at very low temperature.","Hexakis(2,4,6-triisopropylphenyl)tetragermabuta-1,3-dien (1), das in einer Eintopfsynthese zugänglich ist, zersetzt sich oberhalb von 65 C in Fragmente, die ein bis drei Germaniumatome enthalten. Die Umsetzung von 1 mit Germanocen ergibt unter Austausch einer Aryl- gegen eine Cp-Gruppe ein Tetragermacyclobuten. Die versuchte Umsetzung von 1 mit Decamethylgermanocen führte nicht zum Erfolg. Jedoch konnte die Kristallstruktur von Ge(Cp*)2 bestimmt werden, das sich sehr gut in die Reihe der Decamethylmetallocene der Gruppe 14 einfügt. Die Reaktion von 1 mit geringen Mengen an O2 führt zu einem Sechsring, der eine sauerstoffsubstituierte Ge-Ge-Doppelbindung enthält. Mit Maleinsäureanhydrid wird eine tricyclische Verbindung gebildet, die ein Ge3-Fragment enthält. Die Reaktion von 1 mit Gold(I)-iodid bei 60 C ergab den ersten Digermen-Übergangsmetall-Pi-Komplex. Dagegen lieferte die analoge Umsetzung des entsprechend substituierten Digermens mit AuI schon bei sehr tiefen Temperaturen lediglich ein 1,2 Diioddigerman."]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Neue Reaktionsweisen eines Tetragermabuta-1,3-diens und von Digermenen"]}]}],"canonical_facts":{"dc:creator":["Schöpper, Annika"],"dc:description.abstract":["Hexakis(2,4,6-triisopropylphenyl)tetragermabuta-1,3-diene (1), which is accessible by a one-pot synthesis, decomposes at temperatures above 65 C to cleavage products which contain one to three Ge-atoms. The reaction of 1 with germanocene proceeds with exchange of an aryl- by a Cp-group and gives a tetragermacyclobutene. The attempted reaction of 1 with decamethylgermanocene did not succeed. However, the crystal structure of Ge(Cp*)2 could be determined. It fits well in the series of decamethylmetallocenes of group 14. The reaction of 1 with small amounts of O2 yielded a six-membered ring with an endocyclic Ge-Ge double bond containing a Ge-O bond. With maleic anhydride a tricyclic compound is formed with a Ge3-moiety in the molecule. Treatment of 1 with gold(I) iodide at 60 C furnished the first digermene-gold(I)-pi-complex. However, the analogous reaction of the correspondingly substituted digermene yielded solely a 1,2-diiododigermane, even at very low temperature.","Hexakis(2,4,6-triisopropylphenyl)tetragermabuta-1,3-dien (1), das in einer Eintopfsynthese zugänglich ist, zersetzt sich oberhalb von 65 C in Fragmente, die ein bis drei Germaniumatome enthalten. Die Umsetzung von 1 mit Germanocen ergibt unter Austausch einer Aryl- gegen eine Cp-Gruppe ein Tetragermacyclobuten. Die versuchte Umsetzung von 1 mit Decamethylgermanocen führte nicht zum Erfolg. Jedoch konnte die Kristallstruktur von Ge(Cp*)2 bestimmt werden, das sich sehr gut in die Reihe der Decamethylmetallocene der Gruppe 14 einfügt. Die Reaktion von 1 mit geringen Mengen an O2 führt zu einem Sechsring, der eine sauerstoffsubstituierte Ge-Ge-Doppelbindung enthält. Mit Maleinsäureanhydrid wird eine tricyclische Verbindung gebildet, die ein Ge3-Fragment enthält. Die Reaktion von 1 mit Gold(I)-iodid bei 60 C ergab den ersten Digermen-Übergangsmetall-Pi-Komplex. Dagegen lieferte die analoge Umsetzung des entsprechend substituierten Digermens mit AuI schon bei sehr tiefen Temperaturen lediglich ein 1,2 Diioddigerman."],"dc:format.medium":["application/pdf"],"dc:publisher":["BIS der Universität Oldenburg"],"dc:subject":["[Keine Schlagwörter von Autor/in vergeben.]"],"dc:title":["Neue Reaktionsweisen eines Tetragermabuta-1,3-diens und von Digermenen"],"dc:type":["doctoralThesis"],"thesis:degree_level":["thesis.doctoral"],"thesis:institution_name":["Universität Oldenburg"]},"updated_at":"2026-07-27T20:27:13Z"}