Synthesis and characterization of the first chiral benzamidinate complexes of tetravalent actinides (An(IV))


Synthesis and characterization of the first chiral benzamidinate complexes of tetravalent actinides (An(IV))

Schöne, S.; März, J.; Kaden, P.; Weigand, J. J.; Roesky, P. W.; Stumpf, T.; Ikeda-Ohno, A.

In contrast to the dominant trivalent state for the lanthanides (Ln(III)), a wide variety of oxidation states (from +II to +VII) of actinides (An) makes their chemistry intricate but attractive. Especially the early An of thorium (Th), uranium (U), neptunium (Np) and plutonium (Pu) form highly charged cations with the oxidation state four (An4+), which are of particularly interest for the coordination chemistry due to their strong interaction with organic ligands. The focus of our investigations lies in the comprehensive characterization of tetravalent An (An(IV)) complexes with soft ligand donor atoms, such as nitrogen. The present study focuses particularly on the interaction of An(IV) with benzamidinate ligands, which could be considered as a simplified model of naturally occurring N-donor organic compounds.
Recently, the lanthanide complexes with the chiral benzamidine, (S,S)-N,N-Bis-(1-phenylethyl)-benzamidine ((S)-HPEBA), have been successfully synthesized by the group of Prof. Roesky1,2. The present study is inspired by these precedent studies to synthesize a new series of benzamidine compounds with An(IV).

  • Lecture (Conference)
    Actinides 2017, 09.-14.07.2017, Sendai, Japan
  • Lecture (Conference)
    10th International Symposium on Nano and Supramolecular Chemistry, 10.07.2018, Dresden, Deutschland

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Publ.-Id: 25375