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Chemistry of Re with N,N ’-bis(2-pyridylmethyl)ethylenediamine (H(2)pmen): Hydrolysis, dehydrogenation, and ternary complexes

TitleChemistry of Re with N,N ’-bis(2-pyridylmethyl)ethylenediamine (H(2)pmen): Hydrolysis, dehydrogenation, and ternary complexes
Publication TypeJournal Article
Year of Publication2001
AuthorsXu, L, Pierreroy, J, Patrick, BO, Orvig, C
JournalInorganic Chemistry
Volume40
Pagination2005-2010
Date PublishedApr
Type of ArticleArticle
ISBN Number0020-1669
Keywordsaluminum, CHELATE COMPLEXES, COORDINATION-COMPOUNDS, gallium, LIGANDS, RADIOPHARMACEUTICALS, RAY CRYSTAL-STRUCTURE, Rhenium complexes, technetium, TRIS(2-PYRIDYLMETHYL)AMINE
Abstract

A number of Re complexes with N,N ’ -bis(2-pyridylmethyl)ethylenediamine (H(2)pmen) have been made from [NH4]-[ReO4]. . [ReOCl(2)H(2)pmen)]Cl, [ReOCl(Hpmen)][ReO4], and [ReO2(H(2)pmen)] [ReO4] are related by hydrolysis/HCl substitution [ReOCl(Hpmen)] [ReO4] was structurally characterized and found to contain a water-stable amido-Re bend. Dehydrogenation of the N-donor ligand from each amine to imine with concomitant two-electron reduction of the Re center occurs readily in these systems. With suitable 3-hydroxy-4-pyrones, ternary complexes such as [(ReCl)-Cl-III(ma)(C14H14N4)][ReO4]. CH3OH, 5, were made from [NH4][ReO4], H(2)pmen . 4HCl and pyrones in one-pot syntheses. 5, a seven-coordinate Re-III complex, was structurally characterized.

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