Synthesis, characterization and X-ray crystallography of a metallacrown ether complex containing a RuII(bpy)22+ chromophore and its Mo(CO)4 analog

Academic Article

Abstract

  • The chelating ligand (2,2 -C H O )P(CH CH O) P(2,2 -O C H ) reacts with both Ru(bpy) (O SCF ) and Mo(CO) (C H ) to form the new metallacrown ether complexes cis-[Ru(bpy) ((2,2 -C H O )P(CH CH O) P(2,2 -O C H ))](O SCF ) (1) and cis-[Mo(CO) ((2, 2 -C H O )P(CH CH O) P(2,2 -O C H ))] (2). The X-ray crystal structures for both complexes indicate that the metallacrown ether ring oxygen atoms point their lone pairs towards the cavity in the cis-metallacrown ether ring. The effect of interactions of the metallacrown ether complex with selected monoatomic cations (Li , Na and Hg ) on the emissive properties of the Ru(bpy) chromophore were studied by steady-state and time-dependent emission spectroscopy. Our results suggest that complex 1 interacts weakly with Li , Na and Hg , and subtle changes are observed in its photophysical properties. These changes are discussed in terms of excited-state parameters obtained from a Franck-Condon analysis of the emission spectra. © 2004 Elsevier Ltd. All rights reserved. ′ ′ ′ ′ ′ ′ + + 2+ 2+ + + 2+ 12 8 2 2 2 4 2 12 8 2 3 3 2 4 7 8 2 12 8 2 2 2 4 2 12 8 3 3 2 4 12 8 2 2 2 4 2 12 8 2
  • Authors

    Published In

  • Polyhedron  Journal
  • Digital Object Identifier (doi)

    Pubmed Id

  • 10644550
  • Author List

  • Butler JM; Gray GM; Claude JP
  • Start Page

  • 1719
  • End Page

  • 1729
  • Volume

  • 23
  • Issue

  • 10