Coordination chemistry of nitrile and amino pendant arm derivatives of [9]aneN2S and [9]aneNS2 with PdII and CuII

Massimiliano Arca, Alexander J. Blake, Vito Lippolis, Daniela R. Montesu, Jonathan McMaster, Lorenzo Tei, Martin Schröder

Research output: Contribution to journalArticlepeer-review

Abstract

Palladium(II) and copper(II) complexes [Pd(L1)Cl2], [Pd(L3)-Cl2], [Cu(L1)Cl2], [Cu(L3)Cl2], [Pd(L2)][BF4]2, [Pd(L4)Cl]-BF4, [Cu(L2)][NO3]2 and [Cu(L4)Cl]PF6 of the nitrile (L1 and L3) and amino (L2 and L4) pendant arm derivatives of 1-thia-4,7-diazacyclononane ([9]aneN2S) and 7-aza-1,4-dithiacyclononane ([9]aneNS2) have been prepared and fully characterised. In each case, a square-pyramidal coordination sphere is observed at both metal ions with either one or two Cl- anions completing the donor set. The tridentate nine-membered macrocyclic moiety adopts a [333] conformation in all the complexes obtained. The five-membered chelate rings involving the donor atoms of the basal plane adopt a gauche configuration with very similar degrees of puckering. The "innocent" nitrile pendant arms in L1 and L3 do not bind to the metal ions, but still appear to influence the binding of the tridentate macrocyclic frameworks via the tertiary amine sites.

Original languageEnglish
Pages (from-to)1232-1241
Number of pages10
JournalEuropean Journal of Inorganic Chemistry
Issue number6
DOIs
Publication statusPublished - Mar 2003
Externally publishedYes

Keywords

  • Copper
  • Macrocycles
  • N ligands
  • Palladium
  • S ligands

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