The structural and electrochemical consequences of hydrogenating Copper N2S2 Schiff base macrocycles

K.D. Trotter, M.K. Taylor, J.C. Forgie, J. Reglinski, L.E.A. Berlouis, A.R. Kennedy, C.M. Spickett, Rebecca J. Sowden

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Abstract

A series of cis and trans tetradentate copper macrocyclic complexes, of ring size fourteen - sixteen, which employ amine and thioether donor groups are reported. Apart from 5,6,15,16-bisbenzo-8,13-diaza-1,4-dithia-cyclohexadecane copper(I) (cis-[Cu(H4NbuSen)]+) all of the complexes are obtained in the copper(II) form. Crystallographic analysis shows that the copper(II) complexes all adopt a distorted planar geometry around the copper. In contrast, cis-[Cu(H4NbuSen)]+ is found to adopt a distorted tetrahedral geometry. The complexes were subjected to electrochemical analysis in water and acetonitrile. The effect of the solvent, positions of the donor atoms (cis/trans) on E1/2 is discussed as is the comparison of the electrochemical behaviour of these complexes with their parent Schiff base macrocycles.
Original languageEnglish
Pages (from-to)1529-1538
Number of pages10
JournalInorganica Chimica Acta
Volume363
Issue number7
DOIs
Publication statusPublished - 20 Apr 2010

Keywords

  • macrocycle
  • copper
  • redox potential
  • geometry
  • donor groups

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