Copper complexes with new pyridylpyrazole based ligands

José A. Campo, Mercedes Cano*, José V. Heras, M. Cristina Lagunas, Josefina Perles, Elena Pinilla, M. Rosario Torres

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


We report the synthesis, characterization, and crystal structures of new ligands of the pyridinylpyrazole type, i.e., 3,5-bis(4-butoxyphenyl)-1-(pyridin-2-y1)-1H-pyrazole (L1) and 3,5-bis(4-phenoxyphenyl)-1-(pyridin-2-y1)-1H-pyrazole (L2) (Scheme 1), and the study of their coordination behavior towards Cu1 and Cu11. The versatility of this type of ligand, which can give access to different coordination spheres about the metal center, depending on the nature of the copper starting material used in the preparation of the complexes (Scheme 2), is illustrated. Thus, pseudo-tetrahedral Cu1 as well as six-coordinated tetragonal and distorted tetragonal pyramidal Cu11 derivatives were obtained for [Cu(L)2]PF6, [Cu(Cl)2(L)2] (L = L1, L2), and [Cu(Cl)(L1)2]PF6, respectively. We also present a crystallographic support of a distorted octahedral cis-bis(tetrafluoroborato-κF)copper(II) compound found for [Cu(BF4)2(L1)2] (3).

Original languageEnglish
Pages (from-to)1079-1095
Number of pages17
JournalHelvetica Chimica Acta
Issue number4
Publication statusPublished - 13 May 2002
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Biochemistry
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry


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