Chemistry of Re with N,N‘-Bis(2-pyridylmethyl)ethylenediamine (H2pmen):  Hydrolysis, Dehydrogenation, and Ternary Complexes

A number of Re complexes with N,N‘-bis(2-pyridylmethyl)ethylenediamine (H2pmen) have been made from [NH4][ReO4]. [ReOCl2(H2pmen)]Cl, [ReOCl(Hpmen)][ReO4], and [ReO2(H2pmen)][ReO4] are related by hydrolysis/HCl substitution. [ReOCl(Hpmen)][ReO4] was structurally characterized and found to contain a w...

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Bibliographic Details
Published in:Inorganic chemistry 2001-04, Vol.40 (9), p.2005-2010
Main Authors: Xu, Liang, Pierreroy, Jason, Patrick, Brian O, Orvig, Chris
Format: Article
Language:English
Subjects:
Crystallography, X-Ray
Ethylenediamines - chemistry
Hydrogenation
Hydrolysis
Magnetic Resonance Spectroscopy
Molecular Structure
Organometallic Compounds - chemistry
Radioisotopes
Radiopharmaceuticals - chemistry
Rhenium - chemistry
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Summary:A number of Re complexes with N,N‘-bis(2-pyridylmethyl)ethylenediamine (H2pmen) have been made from [NH4][ReO4]. [ReOCl2(H2pmen)]Cl, [ReOCl(Hpmen)][ReO4], and [ReO2(H2pmen)][ReO4] are related by hydrolysis/HCl substitution. [ReOCl(Hpmen)][ReO4] was structurally characterized and found to contain a water-stable amido−Re bond. 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 [ReIIICl(ma)(C14H14N4)][ReO4]·CH3OH, 5, were made from [NH4][ReO4], H2pmen·4HCl and pyrones in one-pot syntheses. 5, a seven-coordinate ReIII complex, was structurally characterized.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic0013025