Cis-trans isomerism in Copper(II) complexes with N-acyl thiourea ligands

Wilfredo Hernández, Evgenia Spodine, Andres Vega, Rainer Richter, Jan Griebel, Reinhard Kirmse, Uwe Schröder, Lothar Beyer

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30 Citations (Scopus)


The N-acyl thiourea complexes bis[N,N-diethyl-N′-(p-nitrobenzoyl)- thioureato]copper(II) (1a,1b) and bis(N,N-diphenyl-N′-benzoylthioureato) copper(II) (2a,2b) crystallize in each case in two modifications. X-ray structural analysis shows that 1a and 1b are cis-trans isomers. This is very unusual for N-acyl thioureato complexes because with exception of one platinum(II) complex up to now only cis complexes have been found. In contrast X-ray structural analysis of both forms 2a and 2b of the other complex shows no cis-trans pair. Both modifications are cis complexes. In solution both isomers of the copper(II) complexes are observable by EPR spectroscopy.

Original languageEnglish
Pages (from-to)1381-1386
Number of pages6
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Issue number10
Publication statusPublished - 2004


  • Acylthioureato complexes
  • Cis-trans isomers
  • Copper
  • Crystal structures
  • Epr spectroscopy

ASJC Scopus subject areas

  • Inorganic Chemistry

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    Hernández, W., Spodine, E., Vega, A., Richter, R., Griebel, J., Kirmse, R., Schröder, U., & Beyer, L. (2004). Cis-trans isomerism in Copper(II) complexes with N-acyl thiourea ligands. Zeitschrift fur Anorganische und Allgemeine Chemie, 630(10), 1381-1386.