In the last few decades, N-heterocyclic carbenes (NHCs) have emerged as a powerful class of carbon-based ligands. Owing to their unique electronic and steric properties, they have been incorporated in a large variety of catalytically active metal complexes. One of the strategies that have been used to modify the ligand properties of NHCs is annulation with different carbo- and heterocyclic groups. It has been shown that annulation in the 4-5 position of the imidazole ring significantly influences the stability and the σ-donor/π- acceptor properties of the carbene species, and this may be used as a versatile tool for the fine-tuning of their electronic properties. Following a brief review of NHC history, the synthesis and structural characterization of a new class of fused N-heterocyclic carbene ligands with a rigid bidentate architecture will be reported. Complexes of type [(NHC)M(COD)Cl], [(NHC)M(CO)2Cl] (M = Rh and Ir) and [(NHC)MCl] (M = Au) were prepared and characterized using spectroscopic and crystallographic methods. The results of preliminary catalytic studies using these new complexes is also reported.
","abstract_html":"<p>In the last few decades, N-heterocyclic carbenes (NHCs) have emerged as a powerful class of carbon-based ligands. Owing to their unique electronic and steric properties, they have been incorporated in a large variety of catalytically active metal complexes. One of the strategies that have been used to modify the ligand properties of NHCs is annulation with different carbo- and heterocyclic groups. It has been shown that annulation in the 4-5 position of the imidazole ring significantly influences the stability and the σ-donor/π- acceptor properties of the carbene species, and this may be used as a versatile tool for the fine-tuning of their electronic properties. Following a brief review of NHC history, the synthesis and structural characterization of a new class of fused N-heterocyclic carbene ligands with a rigid bidentate architecture will be reported. Complexes of type [(NHC)M(COD)Cl], [(NHC)M(CO)2Cl] (M = Rh and Ir) and [(NHC)MCl] (M = Au) were prepared and characterized using spectroscopic and crystallographic methods. The results of preliminary catalytic studies using these new complexes is also reported.</p>","abstract_has_math":false,"creators":["Buckner, Ossie J"],"institution":null,"degree_name":"Master of Science in Chemical Sciences (MSCB)","degree_level":"Thesis","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":["Dr. Daniela Tapu","Dr. Christopher Alexander","Dr. Michael Van Dyke"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2016,"date_issued":"2016-05-12T07:00:00Z","date_published":"2016-05-12T07:00:00Z","updated_at":"2026-07-24T02:43:09Z","subjects":["organometallic","catalysis","organic","Chemistry"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://digitalcommons.kennesaw.edu/mscs_etd/9","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Dr. Daniela Tapu","Dr. Christopher Alexander","Dr. Michael Van Dyke"]},{"key":"dc:creator","label":"Author","values":["Buckner, Ossie J"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2021-05-08T07:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science in Chemical Sciences (MSCB)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["organometallic","catalysis","organic","Chemistry"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://digitalcommons.kennesaw.edu/mscs_etd/9"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["In the last few decades, N-heterocyclic carbenes (NHCs) have emerged as a powerful class of carbon-based ligands. Owing to their unique electronic and steric properties, they have been incorporated in a large variety of catalytically active metal complexes. One of the strategies that have been used to modify the ligand properties of NHCs is annulation with different carbo- and heterocyclic groups. It has been shown that annulation in the 4-5 position of the imidazole ring significantly influences the stability and the σ-donor/π- acceptor properties of the carbene species, and this may be used as a versatile tool for the fine-tuning of their electronic properties. Following a brief review of NHC history, the synthesis and structural characterization of a new class of fused N-heterocyclic carbene ligands with a rigid bidentate architecture will be reported. Complexes of type [(NHC)M(COD)Cl], [(NHC)M(CO)2Cl] (M = Rh and Ir) and [(NHC)MCl] (M = Au) were prepared and characterized using spectroscopic and crystallographic methods. The results of preliminary catalytic studies using these new complexes is also reported.
"]},{"key":"dc:title","label":"Title","values":["A New 2,1,3-Benzothiadiazole-Fused N-Heterocyclic Carbene and Its Metal Complexes"]}]}],"canonical_facts":{"dc:contributor":["Dr. Daniela Tapu","Dr. Christopher Alexander","Dr. Michael Van Dyke"],"dc:creator":["Buckner, Ossie J"],"dc:date.available":["2021-05-08T07:00:00Z"],"dc:description.abstract":["In the last few decades, N-heterocyclic carbenes (NHCs) have emerged as a powerful class of carbon-based ligands. Owing to their unique electronic and steric properties, they have been incorporated in a large variety of catalytically active metal complexes. One of the strategies that have been used to modify the ligand properties of NHCs is annulation with different carbo- and heterocyclic groups. It has been shown that annulation in the 4-5 position of the imidazole ring significantly influences the stability and the σ-donor/π- acceptor properties of the carbene species, and this may be used as a versatile tool for the fine-tuning of their electronic properties. Following a brief review of NHC history, the synthesis and structural characterization of a new class of fused N-heterocyclic carbene ligands with a rigid bidentate architecture will be reported. Complexes of type [(NHC)M(COD)Cl], [(NHC)M(CO)2Cl] (M = Rh and Ir) and [(NHC)MCl] (M = Au) were prepared and characterized using spectroscopic and crystallographic methods. The results of preliminary catalytic studies using these new complexes is also reported.
"],"dc:identifier":["https://digitalcommons.kennesaw.edu/mscs_etd/9"],"dc:subject":["organometallic","catalysis","organic","Chemistry"],"dc:title":["A New 2,1,3-Benzothiadiazole-Fused N-Heterocyclic Carbene and Its Metal Complexes"],"thesis:degree_discipline":["Chemistry"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science in Chemical Sciences (MSCB)"]},"updated_at":"2026-07-24T02:43:09Z"}