At 110°C, the compound HIr(CO)3(GePh3)2 (1) was decarbonylated and transformed into five polynuclear iridium compounds, Ir2(CO)6(μ-GePh2)(GePh3)2 (2), Ir3(CO)6(η1-Ph)2(μ-GePh2)3(GePh3) (3), Ir3(CO)6(η1-Ph)(μ-GePh2)3(GePh3)2 (4), Ir3(CO)6(μ-CO)(μ-GePh2 )2(GePh3)3 (5), and Ir3(CO)6(η1-Ph)(μ-GePh2)2(GePh3)2[μ-Ge(Ph)(OH)] (6), by a combination of condensation and phenyl-cleavage processes. The triiridium compounds 3 - 6 are all new and have been characterized by single-crystal X-ray diffraction analyses. Each new compound consists of a closed triangular cluster of three iridium atoms with two or three diphenylgermylene ligands bridging the Ir-Ir bonds. Separately, compound 5 was converted to 4 in 68% yield by decarbonylation and cleavage of a phenyl group from one of its GePh3 ligands by heating a toluene solution to reflux (110°C) for 1 h. A computational study has revealed that the mechanism of transformation of 5 to 4 occurs by elimination of the bridging carbonyl ligand followed by a 'deinsertion' α-cleavage of a phenyl group from one of the GePh3 ligands.
","abstract_html":"<p>At 110°C, the compound HIr(CO)<sub>3</sub>(GePh<sub>3</sub>)<sub>2</sub> (1) was decarbonylated and transformed into five polynuclear iridium compounds, Ir<sub>2</sub>(CO)<sub>6</sub>(μ-GePh<sub>2</sub>)(GePh<sub>3</sub>)<sub>2</sub> (2), Ir<sub>3</sub>(CO)<sub>6</sub>(η1-Ph)<sub>2</sub>(μ-GePh<sub>2</sub>)<sub>3</sub>(GePh<sub>3</sub>) (3), Ir<sub>3</sub>(CO)<sub>6</sub>(η1-Ph)(μ-GePh<sub>2</sub>)<sub>3</sub>(GePh<sub>3</sub>)<sub>2</sub> (4), Ir<sub>3</sub>(CO)<sub>6</sub>(μ-CO)(μ-GePh<sub>2</sub> )<sub>2</sub>(GePh<sub>3</sub>)<sub>3</sub> (5), and Ir<sub>3</sub>(CO)<sub>6</sub>(η1-Ph)(μ-GePh<sub>2</sub>)<sub>2</sub>(GePh<sub>3</sub>)<sub>2</sub>[μ-Ge(Ph)(OH)] (6), by a combination of condensation and phenyl-cleavage processes. The triiridium compounds 3 - 6 are all new and have been characterized by single-crystal X-ray diffraction analyses. Each new compound consists of a closed triangular cluster of three iridium atoms with two or three diphenylgermylene ligands bridging the Ir-Ir bonds. Separately, compound 5 was converted to 4 in 68% yield by decarbonylation and cleavage of a phenyl group from one of its GePh<sub>3</sub> ligands by heating a toluene solution to reflux (110°C) for 1 h. A computational study has revealed that the mechanism of transformation of 5 to 4 occurs by elimination of the bridging carbonyl ligand followed by a 'deinsertion' α-cleavage of a phenyl group from one of the GePh<sub>3</sub> ligands.</p>","abstract_has_math":false,"creators":["Fang, Fang"],"institution":null,"degree_name":"M.S.","degree_level":"Campus Access Thesis","degree_discipline":"Chemistry and Biochemistry","degree_department":null,"school":null,"contributors":["Richard D Adams"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012-01-01T08:00:00Z","date_published":"2012-01-01T08:00:00Z","updated_at":"2026-07-24T04:38:07Z","subjects":["Chemistry","Physical Sciences and Mathematics","CARBONYL","CLUSTER","IRIDIUM"],"languages":[],"rights":["© 2012, Fang Fang"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://scholarcommons.sc.edu/etd/679","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Richard D Adams"]},{"key":"dc:creator","label":"Author","values":["Fang, Fang"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry and Biochemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Campus Access Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Chemistry","Physical Sciences and Mathematics","CARBONYL","CLUSTER","IRIDIUM"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["© 2012, Fang Fang"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholarcommons.sc.edu/etd/679"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["At 110°C, the compound HIr(CO)3(GePh3)2 (1) was decarbonylated and transformed into five polynuclear iridium compounds, Ir2(CO)6(μ-GePh2)(GePh3)2 (2), Ir3(CO)6(η1-Ph)2(μ-GePh2)3(GePh3) (3), Ir3(CO)6(η1-Ph)(μ-GePh2)3(GePh3)2 (4), Ir3(CO)6(μ-CO)(μ-GePh2 )2(GePh3)3 (5), and Ir3(CO)6(η1-Ph)(μ-GePh2)2(GePh3)2[μ-Ge(Ph)(OH)] (6), by a combination of condensation and phenyl-cleavage processes. The triiridium compounds 3 - 6 are all new and have been characterized by single-crystal X-ray diffraction analyses. Each new compound consists of a closed triangular cluster of three iridium atoms with two or three diphenylgermylene ligands bridging the Ir-Ir bonds. Separately, compound 5 was converted to 4 in 68% yield by decarbonylation and cleavage of a phenyl group from one of its GePh3 ligands by heating a toluene solution to reflux (110°C) for 1 h. A computational study has revealed that the mechanism of transformation of 5 to 4 occurs by elimination of the bridging carbonyl ligand followed by a 'deinsertion' α-cleavage of a phenyl group from one of the GePh3 ligands.
"]},{"key":"dc:title","label":"Title","values":["Studies of Iridium Carbonyl Cluster Complexes"]}]}],"canonical_facts":{"dc:contributor":["Richard D Adams"],"dc:creator":["Fang, Fang"],"dc:description.abstract":["At 110°C, the compound HIr(CO)3(GePh3)2 (1) was decarbonylated and transformed into five polynuclear iridium compounds, Ir2(CO)6(μ-GePh2)(GePh3)2 (2), Ir3(CO)6(η1-Ph)2(μ-GePh2)3(GePh3) (3), Ir3(CO)6(η1-Ph)(μ-GePh2)3(GePh3)2 (4), Ir3(CO)6(μ-CO)(μ-GePh2 )2(GePh3)3 (5), and Ir3(CO)6(η1-Ph)(μ-GePh2)2(GePh3)2[μ-Ge(Ph)(OH)] (6), by a combination of condensation and phenyl-cleavage processes. The triiridium compounds 3 - 6 are all new and have been characterized by single-crystal X-ray diffraction analyses. Each new compound consists of a closed triangular cluster of three iridium atoms with two or three diphenylgermylene ligands bridging the Ir-Ir bonds. Separately, compound 5 was converted to 4 in 68% yield by decarbonylation and cleavage of a phenyl group from one of its GePh3 ligands by heating a toluene solution to reflux (110°C) for 1 h. A computational study has revealed that the mechanism of transformation of 5 to 4 occurs by elimination of the bridging carbonyl ligand followed by a 'deinsertion' α-cleavage of a phenyl group from one of the GePh3 ligands.
"],"dc:identifier":["https://scholarcommons.sc.edu/etd/679"],"dc:rights":["© 2012, Fang Fang"],"dc:subject":["Chemistry","Physical Sciences and Mathematics","CARBONYL","CLUSTER","IRIDIUM"],"dc:title":["Studies of Iridium Carbonyl Cluster Complexes"],"thesis:degree_discipline":["Chemistry and Biochemistry"],"thesis:degree_level":["Campus Access Thesis"],"thesis:degree_name":["M.S."]},"updated_at":"2026-07-24T04:38:07Z"}