{"id":{"repo_id":"qucosa-diss","oai_identifier":"oai:qucosa:de:qucosa:72441"},"canonical_url":"https://search.dev.ndltd.org/etd/qucosa-diss/oai:qucosa:de:qucosa:72441","repository":{"repo_id":"qucosa-diss","name":"QUCOSA","base_url":"http://www.qucosa.de/oai/"},"display":{"title":"Dipyrazolylphosphanes in Condensation and P–N/P–P Bond Metathesis Reactions","abstract":"Phosphorus plays a crucial role in modern p-block chemistry.1 One reason for that is the diagonal relationship between phosphorus and carbon.2 Comparable to carbon and its chemistry, phosphorus tends to form homoatomic bonds, which is explainable by the relatively high P–P single bond energy (ca. 200 kJ/mol).3 Thus, a plethora of poly-phosphorus compounds are reported in the last decades comprising of fascinating bonding motifs4 and interesting applications in coordination5-7 and synthetic8-11 chemistry, as well as in ligand design.12,13 A crucial point in the chemistry of polyphosphanes is of course the formation of P–P bonds. Numerous synthetic procedures are established and reviewed including salt metathesis,4a,14 dehalosilylation15 and dehalostannylation16 reactions, base promoted dehydrohalogenation reactions17 and dehydrogenative coupling reactions mediated by main group compounds18 or catalysis by transition metals.5,19 Moreover, dialkylamino-substituted phosphanes are used in condensation reactions to form P–P bonds since the early 1960’s. Yet these reactions need elevated temperatures, somewhat limiting the formation of polyphosphorus compounds as stated by the few examples reported.17d,20 The application of pyrazolyl-substituted phosphanes in P–P bond formation reactions is a relatively young field of research.21 Their synthesis and general chemical behavior as well as advantages in comparison to dialkylamino-substituted phosphanes is discussed in the following chapter.","abstract_html":"Phosphorus plays a crucial role in modern p-block chemistry.1 One reason for that is the diagonal relationship between phosphorus and carbon.2 Comparable to carbon and its chemistry, phosphorus tends to form homoatomic bonds, which is explainable by the relatively high P–P single bond energy (ca. 200 kJ/mol).3 Thus, a plethora of poly-phosphorus compounds are reported in the last decades comprising of fascinating bonding motifs4 and interesting applications in coordination5-7 and synthetic8-11 chemistry, as well as in ligand design.12,13 A crucial point in the chemistry of polyphosphanes is of course the formation of P–P bonds. Numerous synthetic procedures are established and reviewed including salt metathesis,4a,14 dehalosilylation15 and dehalostannylation16 reactions, base promoted dehydrohalogenation reactions17 and dehydrogenative coupling reactions mediated by main group compounds18 or catalysis by transition metals.5,19 Moreover, dialkylamino-substituted phosphanes are used in condensation reactions to form P–P bonds since the early 1960’s. Yet these reactions need elevated temperatures, somewhat limiting the formation of polyphosphorus compounds as stated by the few examples reported.17d,20 The application of pyrazolyl-substituted phosphanes in P–P bond formation reactions is a relatively young field of research.21 Their synthesis and general chemical behavior as well as advantages in comparison to dialkylamino-substituted phosphanes is discussed in the following chapter.","abstract_has_math":false,"creators":["Schoemaker, Robin"],"institution":"Technische Universität Dresden","degree_name":null,"degree_level":"thesis.doctoral","degree_discipline":null,"degree_department":null,"school":null,"contributors":["Weigand, Jan J.","Müller, Christian"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2020,"date_issued":"2020-09-04","date_published":"2020-09-04","updated_at":"2026-07-24T03:56:21Z","subjects":["Phosphorus","Pyrazolylphosphane","P–N/P–P Bond Metathesis","Phosphor","P–N/P–P Metathese"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":null,"outbound_label":null,"outbound_source":null},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Weigand, Jan J.","Müller, Christian"]},{"key":"dc:creator","label":"Author","values":["Schoemaker, Robin"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:publisher","label":"Institution","values":["Technische Universität Dresden"]},{"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":["Technische Universität Dresden"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Phosphorus","Pyrazolylphosphane","P–N/P–P Bond Metathesis","Phosphor","P–N/P–P Metathese"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Phosphorus plays a crucial role in modern p-block chemistry.1 One reason for that is the diagonal relationship between phosphorus and carbon.2 Comparable to carbon and its chemistry, phosphorus tends to form homoatomic bonds, which is explainable by the relatively high P–P single bond energy (ca. 200 kJ/mol).3 Thus, a plethora of poly-phosphorus compounds are reported in the last decades comprising of fascinating bonding motifs4 and interesting applications in coordination5-7 and synthetic8-11 chemistry, as well as in ligand design.12,13 A crucial point in the chemistry of polyphosphanes is of course the formation of P–P bonds. Numerous synthetic procedures are established and reviewed including salt metathesis,4a,14 dehalosilylation15 and dehalostannylation16 reactions, base promoted dehydrohalogenation reactions17 and dehydrogenative coupling reactions mediated by main group compounds18 or catalysis by transition metals.5,19 Moreover, dialkylamino-substituted phosphanes are used in condensation reactions to form P–P bonds since the early 1960’s. Yet these reactions need elevated temperatures, somewhat limiting the formation of polyphosphorus compounds as stated by the few examples reported.17d,20 The application of pyrazolyl-substituted phosphanes in P–P bond formation reactions is a relatively young field of research.21 Their synthesis and general chemical behavior as well as advantages in comparison to dialkylamino-substituted phosphanes is discussed in the following chapter."]},{"key":"dc:title","label":"Title","values":["Dipyrazolylphosphanes in Condensation and P–N/P–P Bond Metathesis Reactions"]}]}],"canonical_facts":{"dc:contributor":["Weigand, Jan J.","Müller, Christian"],"dc:creator":["Schoemaker, Robin"],"dc:description.abstract":["Phosphorus plays a crucial role in modern p-block chemistry.1 One reason for that is the diagonal relationship between phosphorus and carbon.2 Comparable to carbon and its chemistry, phosphorus tends to form homoatomic bonds, which is explainable by the relatively high P–P single bond energy (ca. 200 kJ/mol).3 Thus, a plethora of poly-phosphorus compounds are reported in the last decades comprising of fascinating bonding motifs4 and interesting applications in coordination5-7 and synthetic8-11 chemistry, as well as in ligand design.12,13 A crucial point in the chemistry of polyphosphanes is of course the formation of P–P bonds. Numerous synthetic procedures are established and reviewed including salt metathesis,4a,14 dehalosilylation15 and dehalostannylation16 reactions, base promoted dehydrohalogenation reactions17 and dehydrogenative coupling reactions mediated by main group compounds18 or catalysis by transition metals.5,19 Moreover, dialkylamino-substituted phosphanes are used in condensation reactions to form P–P bonds since the early 1960’s. Yet these reactions need elevated temperatures, somewhat limiting the formation of polyphosphorus compounds as stated by the few examples reported.17d,20 The application of pyrazolyl-substituted phosphanes in P–P bond formation reactions is a relatively young field of research.21 Their synthesis and general chemical behavior as well as advantages in comparison to dialkylamino-substituted phosphanes is discussed in the following chapter."],"dc:publisher":["Technische Universität Dresden"],"dc:subject":["Phosphorus","Pyrazolylphosphane","P–N/P–P Bond Metathesis","Phosphor","P–N/P–P Metathese"],"dc:title":["Dipyrazolylphosphanes in Condensation and P–N/P–P Bond Metathesis Reactions"],"dc:type":["doctoralThesis"],"thesis:degree_level":["thesis.doctoral"],"thesis:institution_name":["Technische Universität Dresden"]},"updated_at":"2026-07-24T03:56:21Z"}