{"id":{"repo_id":"aachen","oai_identifier":"oai:publications.rwth-aachen.de:56289"},"canonical_url":"https://search.dev.ndltd.org/etd/aachen/oai:publications.rwth-aachen.de:56289","repository":{"repo_id":"aachen","name":"RWTH Aachen University","base_url":"https://publications.rwth-aachen.de/oai2d"},"display":{"title":"Synthese, Struktur und Reaktivität von [1]Borametallocenophanen","abstract":"The synthesis of bis(cyclopentadienyl)- R2NB(eta5-C5H5)2 diindenyl- R2NB(eta5-C9H7)2 and mixed aminoboranes of the type R2NB(eta5-C5H5)(eta5-C9H7) (R = various alkyl) was described and the structure of the compounds in solution was determined by various NMR-methods. These ligand precursor molecules were reacted with group IV metal compounds. Various [1]Borametallocenophane complexes of all the group IV metals were obtained in high yield by a very efficient, convenient, multistep one-pot synthesis. By this method not only the bis(cyclopentadienyl)- and diindenyl complexes [{R2NB(eta5-C5H4)2}MCl2] (M = Ti, Zr, Hf; R = various alkyl, Me3Si) were obtained, but also complexes with two different eta5-coordinated ligands such as [{R2NB(eta5-C5H4)(eta5-C9H6)}MCl2] (M = Ti, Zr; R = various alkyl). Some of the complexes were chosen to investigate their catalytic properties with respect to Ziegler-Natta-type polymerisation of olefins, and proved to be highly efficient for the preparation of polyethylene. Also a new class of complexes – e. g. boron-bridged constrained geometry complexes – was obtained and characterized in solution and solid state.","abstract_html":"The synthesis of bis(cyclopentadienyl)- R2NB(eta5-C5H5)2 diindenyl- R2NB(eta5-C9H7)2 and mixed aminoboranes of the type R2NB(eta5-C5H5)(eta5-C9H7) (R = various alkyl) was described and the structure of the compounds in solution was determined by various NMR-methods. These ligand precursor molecules were reacted with group IV metal compounds. Various [1]Borametallocenophane complexes of all the group IV metals were obtained in high yield by a very efficient, convenient, multistep one-pot synthesis. By this method not only the bis(cyclopentadienyl)- and diindenyl complexes [{R2NB(eta5-C5H4)2}MCl2] (M = Ti, Zr, Hf; R = various alkyl, Me3Si) were obtained, but also complexes with two different eta5-coordinated ligands such as [{R2NB(eta5-C5H4)(eta5-C9H6)}MCl2] (M = Ti, Zr; R = various alkyl). Some of the complexes were chosen to investigate their catalytic properties with respect to Ziegler-Natta-type polymerisation of olefins, and proved to be highly efficient for the preparation of polyethylene. Also a new class of complexes – e. g. boron-bridged constrained geometry complexes – was obtained and characterized in solution and solid state.","abstract_has_math":false,"creators":["von Koblinski, Carsten"],"institution":"Publikationsserver der RWTH Aachen University","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Braunschweig, Holger"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2000,"date_issued":"2000","date_published":"2000","updated_at":"2026-07-30T19:41:53Z","subjects":["info:eu-repo/classification/ddc/540","Chemie","Borkomplexe","Metallocene","Cyclophane"],"languages":["ger"],"rights":["info:eu-repo/semantics/openAccess"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-118406%22"],"render_values":[{"text":"https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-118406%22","href":"https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-118406%22","code":true}]}]},"links":{"outbound_url":"https://publications.rwth-aachen.de/record/56289","outbound_label":"Repository record","outbound_source":"dc:identifier"},"source_record":{"url":"https://publications.rwth-aachen.de/oai2d?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Apublications.rwth-aachen.de%3A56289","prefix":"oai_dc"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Braunschweig, Holger"]},{"key":"dc:creator","label":"Author","values":["von Koblinski, Carsten"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:coverage","label":"Dc Coverage","values":["DE"]},{"key":"dc:date","label":"Dc Date","values":["2000"]},{"key":"dc:publisher","label":"Institution","values":["Publikationsserver der RWTH Aachen University"]},{"key":"dc:relation","label":"Dc Relation","values":["info:eu-repo/semantics/altIdentifier/urn/urn:nbn:de:hbz:82-opus-585"]},{"key":"dc:type","label":"Dc Type","values":["info:eu-repo/semantics/doctoralThesis","info:eu-repo/semantics/publishedVersion"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["info:eu-repo/classification/ddc/540","Chemie","Borkomplexe","Metallocene","Cyclophane"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["ger"]},{"key":"dc:rights","label":"Dc Rights","values":["info:eu-repo/semantics/openAccess"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://publications.rwth-aachen.de/record/56289","https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-118406%22"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The synthesis of bis(cyclopentadienyl)- R2NB(eta5-C5H5)2 diindenyl- R2NB(eta5-C9H7)2 and mixed aminoboranes of the type R2NB(eta5-C5H5)(eta5-C9H7) (R = various alkyl) was described and the structure of the compounds in solution was determined by various NMR-methods. These ligand precursor molecules were reacted with group IV metal compounds. Various [1]Borametallocenophane complexes of all the group IV metals were obtained in high yield by a very efficient, convenient, multistep one-pot synthesis. By this method not only the bis(cyclopentadienyl)- and diindenyl complexes [{R2NB(eta5-C5H4)2}MCl2] (M = Ti, Zr, Hf; R = various alkyl, Me3Si) were obtained, but also complexes with two different eta5-coordinated ligands such as [{R2NB(eta5-C5H4)(eta5-C9H6)}MCl2] (M = Ti, Zr; R = various alkyl). Some of the complexes were chosen to investigate their catalytic properties with respect to Ziegler-Natta-type polymerisation of olefins, and proved to be highly efficient for the preparation of polyethylene. Also a new class of complexes – e. g. boron-bridged constrained geometry complexes – was obtained and characterized in solution and solid state."]},{"key":"dc:source","label":"Dc Source","values":["Aachen : Publikationsserver der RWTH Aachen University 117 S. : graph. Darst. (2000). = Aachen, Techn. Hochsch., Diss., 2000"]},{"key":"dc:title","label":"Title","values":["Synthese, Struktur und Reaktivität von [1]Borametallocenophanen"]}]}],"canonical_facts":{"dc:contributor":["Braunschweig, Holger"],"dc:coverage":["DE"],"dc:creator":["von Koblinski, Carsten"],"dc:date":["2000"],"dc:description":["The synthesis of bis(cyclopentadienyl)- R2NB(eta5-C5H5)2 diindenyl- R2NB(eta5-C9H7)2 and mixed aminoboranes of the type R2NB(eta5-C5H5)(eta5-C9H7) (R = various alkyl) was described and the structure of the compounds in solution was determined by various NMR-methods. These ligand precursor molecules were reacted with group IV metal compounds. Various [1]Borametallocenophane complexes of all the group IV metals were obtained in high yield by a very efficient, convenient, multistep one-pot synthesis. By this method not only the bis(cyclopentadienyl)- and diindenyl complexes [{R2NB(eta5-C5H4)2}MCl2] (M = Ti, Zr, Hf; R = various alkyl, Me3Si) were obtained, but also complexes with two different eta5-coordinated ligands such as [{R2NB(eta5-C5H4)(eta5-C9H6)}MCl2] (M = Ti, Zr; R = various alkyl). Some of the complexes were chosen to investigate their catalytic properties with respect to Ziegler-Natta-type polymerisation of olefins, and proved to be highly efficient for the preparation of polyethylene. Also a new class of complexes – e. g. boron-bridged constrained geometry complexes – was obtained and characterized in solution and solid state."],"dc:identifier":["https://publications.rwth-aachen.de/record/56289","https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-118406%22"],"dc:language":["ger"],"dc:publisher":["Publikationsserver der RWTH Aachen University"],"dc:relation":["info:eu-repo/semantics/altIdentifier/urn/urn:nbn:de:hbz:82-opus-585"],"dc:rights":["info:eu-repo/semantics/openAccess"],"dc:source":["Aachen : Publikationsserver der RWTH Aachen University 117 S. : graph. Darst. (2000). = Aachen, Techn. Hochsch., Diss., 2000"],"dc:subject":["info:eu-repo/classification/ddc/540","Chemie","Borkomplexe","Metallocene","Cyclophane"],"dc:title":["Synthese, Struktur und Reaktivität von [1]Borametallocenophanen"],"dc:type":["info:eu-repo/semantics/doctoralThesis","info:eu-repo/semantics/publishedVersion"]},"updated_at":"2026-07-30T19:41:53Z"}