Copper(I/II) complexes of a bis(tetrathiafulvalene)-2,2 '-bipyridine: synthesis, characterization, magnetic and electrochemical properties

Devic T., Rondeau D., Sahin Y., Levillain E., Clerac R., Batail P., ...More

DALTON TRANSACTIONS, no.10, pp.1331-1337, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: Issue: 10
  • Publication Date: 2006
  • Doi Number: 10.1039/b512598g
  • Journal Name: DALTON TRANSACTIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1331-1337
  • Yıldız Technical University Affiliated: No

Abstract

The coordination ability of the electroactive TTF-based chelating ligand 5,5'- bis(4,5-bis(thiomethyl)-4 4'-carbamoyltetrathiafulvalene)-2,2'-bipyridine(L) has been tested with Cu(I) and Cu(II) centres. [(L)(2)Cu-I](PF6), [(L)(2)Cu-II](OTf)(2) and [(L)Cu-II(DMF)(3)](OTf)(2) have been synthesized. A single-crystal X- ray analysis was performed on [(L) CuII(DMF) 3](OTf) 2, showing a distorted octahedral geometry around the Cu(II) centre, and the formation of dimeric units in the solid state through weak coordination in apical position of an amide oxygen atom from a neighbouring complex. Magnetic data show that the paramagnetic metallic centres are isolated, in agreement with the solid-state structure. Electrochemical measurements were performed on the three complexes and in all cases the Cu(I)/Cu(II) and TTF/TTF+center dot/TTF2+ redox processes were observed.