Coordination chemistry of 5,5″-disubstituted 2,2′:6′,2″-terpyridines

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Abstract

Two 2,2′:6′,2″-terpyridine ligands bearing substituents in the 5 and 5″-positions have been prepared and their iron(II) complexes studied to investigate the influence of substituents in these positions. A synergistic interplay between σ- and π-bonding effects, involving conjugation of the substituents with the central ring, means that, in contrast to 4′-substituted 2,2′:6′,2″-terpyridines, the metal-ligand interactions cannot be simply correlated with the electron-donor or -acceptor properties of the substituents. The crystal structure of the complex [Fe(3)2][PF6]2 · 2MeCN (3=5,5″-bis(propoxy)-2,2′:6′,2″-terpyridine) is reported. In addition, cobalt(II) and ruthenium(II) complexes of 5,5″-bis(propoxy)-2,2′:6′,2″-terpyridine were prepared and characterised.

Original languageEnglish
Pages (from-to)3989-3997
Number of pages9
JournalPolyhedron
Volume17
Issue number23-24
DOIs
Publication statusPublished - 13 Nov 1998

Keywords

  • 2
  • 2′:6′
  • 2″-terpyridine
  • Ligand reactions
  • Metal complexes
  • Metallosupramolecular chemistry
  • Oligopyridines

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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