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Two alternative approaches to modification of a cage complex: nucleophilic substitution and electrophilic addition for the synthesis of an iron(II) clathrochelate with an annulated imidazole fragment

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A rib-functionalized iron(II) tris-dioximate clathrochelate bearing an annulated phenylimidazole fragment was prepared using nucleophilic substitution and electrophilic addition at the chelating α-dioximate fragment of the macrobicyclic framework. The resultant cage complex was identified with single crystal XRD, analytical data, 1H, 13C, 19F, 11B NMR spectroscopy, and examined with UV–vis spectroscopy and CVA. Two approaches to modification of the clathrochelate framework are compared.
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Keywords: Clathrochelates; Electrophilic addition; Iron complexes; Ligand reactivity; Macrocyclic compounds; Nucleophilic substitution

Document Type: Research Article

Affiliations: 1: Department of Chemistry of Coordination, Cluster and Supramolecular Compounds, Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk, Russia 2: Faculty of Chemical and Food Technology, Slovak University of Technology, Bratislava, Slovakia 3: Faculty of Natural Sciences, Novosibirsk State University, Novosibirsk, Russia 4: Laboratory for Aliphatic Organoboron Compounds, A.N. Nesmeyanov Institute of Organoelement Compounds RAS, Moscow, Russia

Publication date: November 2, 2015

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