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A square-planar osmium(ii) complex.

Josh Abbenseth1, Martin Diefenbach, Sarah C Bete

  • 1University of Goettingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077 Göttingen, Germany. Sven.Schneider@chemie.uni-goettingen.de.

Chemical Communications (Cambridge, England)
|April 14, 2017
PubMed
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Researchers reduced an osmium(III) pincer complex to create a novel osmium(II) complex. This square-planar complex exhibits temperature-independent paramagnetism due to spin-orbit coupling effects.

Area of Science:

  • Organometallic chemistry
  • Inorganic chemistry

Background:

  • Pincer complexes are versatile ligands in coordination chemistry.
  • Osmium complexes exhibit diverse electronic and magnetic properties.

Purpose of the Study:

  • To synthesize and characterize a novel osmium(II) pincer complex.
  • To investigate the magnetic properties and electronic structure of the osmium(II) complex.

Main Methods:

  • Reduction of an osmium(III) precursor.
  • Isolation and full characterization of the osmium(II) product.
  • Spectroscopic, structural, and magnetic measurements.
  • Multireference computational studies.

Main Results:

  • Successful synthesis of the square-planar osmium(II) complex [OsIICl(PNP)].

Related Experiment Videos

  • Observation of strong temperature-independent paramagnetism.
  • Computational analysis revealed a well-separated ground state influenced by spin-orbit coupling.

    • Conclusions:

    • The study reports a new osmium(II) pincer complex with unique magnetic behavior.
    • Spin-orbit coupling plays a crucial role in the observed paramagnetism.