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  4. Reactions of the cationic complex [(eta(6)-C6Me6)(2)Ru-2(mu(2)-H)(3)](+) with nitrogen-containing heterocycles in aqueous solution
 
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Reactions of the cationic complex [(eta(6)-C6Me6)(2)Ru-2(mu(2)-H)(3)](+) with nitrogen-containing heterocycles in aqueous solution

Auteur(s)
Jahncke, Manfred
Neels, Antonia
Stoeckli-Evans, Helen 
Institut de physique 
Süss-Fink, Georg 
Institut de chimie 
Date de parution
1998
In
Journal of Organometallic Chemistry
Vol.
1-2
No
561
De la page
227
A la page
235
Mots-clés
  • aqueous solution
  • hexamethylbenzene complexes
  • hydride ligands
  • pyrazolato ligands
  • ruthenium
  • triazolato ligands
  • ARENE-RUTHENIUM COMPLEXES
  • X-RAY STRUCTURE
  • HYDROGEN ACTIVATION
  • ORGANOMETALLIC COMPLEXES
  • MOLECULAR-STRUCTURE
  • MAGNETIC-PROPERTIES
  • COUPLING REACTION
  • SPIN TRANSITION
  • LIGANDS
  • PYRAZOLATE
  • aqueous solution

  • hexamethylbenzene com...

  • hydride ligands

  • pyrazolato ligands

  • ruthenium

  • triazolato ligands

  • ARENE-RUTHENIUM COMPL...

  • X-RAY STRUCTURE

  • HYDROGEN ACTIVATION

  • ORGANOMETALLIC COMPLE...

  • MOLECULAR-STRUCTURE

  • MAGNETIC-PROPERTIES

  • COUPLING REACTION

  • SPIN TRANSITION

  • LIGANDS

  • PYRAZOLATE

Résumé
The dinuclear cation [(eta(6)-C6Me6)(2)Ru-2(mu(2)-H)(3)](+) (1) reacts in aqueous solution with pyrazole and 4-methylpyrazole to give the bispyrazolato complexes [(eta(6)-C6Me6)(2)Ru-2(mu(2)-H)(mu(2)-eta(1),eta(1)-N2C3H2R)(2)](+) (R = H: 2, R = Me: 3). The reaction with 1,2,4-triazole results in the formation of the bistriazolato complex [(eta(6)-C6Me6)(2)Ru-2(mu(2)-H)(mu(2)-eta(1),eta(1)-N3C2H2)(2)](+) (4) Successive protonation of the triazolato ligands in 4 leads to the complexes [(eta(6)-C6Me6)(2)Ru-2(mu(2)-H)(mu(2)-eta(1),-N3C2H2)(mu(2)-eta(1),eta(1 )-N3C2H3)](2+) (5) and [(eta(6)-C6Me6)(2)RU2(mu(2)-H)(mu(2)-eta(1),eta(1)-N3C2H2)(2)](3+) (6). The reaction of 1 with 1,2,3-triazole gives a 1:1 mixture of the bistriazolato complexes [(eta(6)-C6Me6)(2)Ru-2(mu(2)-H)(mu(2)-eta(1),eta(1)-N3C2H2)(2)](+) with parallel (7a) and anti-parallel (7b) coordination of the triazolato ligands. The single-crystal X-ray structure analyses of 2 (hexafluorophosphate salt) and 4 (tosylate salt) reveal for both complex types a ruthenium-ruthenium backbone being bridged by the two heterocyclic ligands with the N-N axis coordinated in a mu(2)-eta(1),eta(1)-fashion. A single-crystal X-ray structure analysis of title complex 1 (hexafluorophosphate salt) confirms the presence of three bridging hydride ligands with a Ru-Ru distance of only 2.47 Angstrom. (C) 1998 Elsevier Science S.A. All rights reserved.
Identifiants
https://libra.unine.ch/handle/123456789/13311
Type de publication
journal article
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