Chemistry of re with N,N'-bis(2-pyridylmethyl)ethylenediamine (H2pmen): hydrolysis, dehydrogenation, and ternary complexes

Inorg Chem. 2001 Apr 23;40(9):2005-10. doi: 10.1021/ic0013025.

Abstract

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Crystallography, X-Ray
  • Ethylenediamines / chemistry*
  • Hydrogenation
  • Hydrolysis
  • Magnetic Resonance Spectroscopy
  • Molecular Structure
  • Organometallic Compounds / chemistry*
  • Radioisotopes
  • Radiopharmaceuticals / chemistry*
  • Rhenium / chemistry*

Substances

  • Ethylenediamines
  • Organometallic Compounds
  • Radioisotopes
  • Radiopharmaceuticals
  • perrhenate
  • Rhenium