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Keywords:

  • actinides;
  • density functional calculations;
  • gas-phase chemistry;
  • mass spectrometry;
  • polycations
Thumbnail image of graphical abstract

Sheltering thorium ions: A Th4+ ion supported by three neutral tetramethyl-3-oxaglutaramide ligands (L=TMOGA) is produced in the gas phase by electrospray ionization (see graph). The thorium in chiral Th(L)34+ is coordinated by nine oxygen atoms (see picture; O red, N blue, C gray). Quantum chemical studies revealed a decrease in Th[BOND]O binding energies and bond orders and an increase in bond lengths, as the number of coordinating ligands increases.