Homo- and Heterodinuclear Head-to-Head or Head-to-Tail Complexes of Rhodium(I) and Iridium(I) with C2,N3 or C8,N9 Bridging Azolato Ligands

Autor:	Maximilian Böhmer, Steffen Cepa, Fabian Dielmann, Florian Roelfes, F. Ekkehardt Hahn, Tristan Tsai Yuan Tan
Rok vydání:	2019
Předmět:	Chemistry Ligand Head to head Organic Chemistry chemistry.chemical_element Medicinal chemistry Lithium diisopropylamide Rhodium Inorganic Chemistry Metal chemistry.chemical_compound Deprotonation visual_art visual_art.visual_art_medium Iridium Physical and Theoretical Chemistry
Zdroj:	Organometallics. 38:1982-1990
ISSN:	1520-6041 0276-7333
Popis:	Reaction of in situ lithiated N-methylimidazole or 1,5,6-trimethylbenzimidazole with [M(cod)(μ-Cl)]2 (M = Rh, Ir) led to the exclusive formation of the homodinuclear head-to-head complexes [2]–[5], where the metal centers are bridged by two C,N-coordinated azolato ligands. The two metal centers are each coordinated by one cod ligand and either two carbon or two nitrogen donors of the azolato ligands. Access to a heterodinuclear Ir/Rh complex [6] was achieved via the lithiated iridium complex [7] and addition of an equimolar amount of [Rh(cod)(μ-Cl)]2. Deprotonation of caffeine with lithium diisopropylamide and addition of [M(cod)(μ-Cl)]2 (M = Rh, Ir) led to mixtures of the head-to-head (M = Ir: [8H–H]; M = Rh: [9H–H]) and head-to-tail isomers (M = Ir: [8H–T]; M = Rh: [9H–T]) of the homodinuclear complexes. The molecular structures of the homo- and heterodinuclear complexes [3], [5]·2C6H5F, [6]·2C6H5F, and [9H–T]·C4H8O have been determined by X-ray diffraction studies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1818b63d4bd8aff5011d173b86ddbb94 https://doi.org/10.1021/acs.organomet.9b00074 Zobrazit plný text záznamu