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Keywords:

  • density functional calculations;
  • metal–metal interactions;
  • multiple bonds;
  • structure elucidation;
  • uranium
Thumbnail image of graphical abstract

Nice to see U2! The [PhUUPh] molecule (see picture; U pink, C gray, H white) has been studied by multiconfigurational quantum chemical methods. It was found that a quintuple bond is formed between the two uranium atoms with a U[BOND]U bond length of 2.29 Å. The phenyl ligand was used to mimic a bulky terphenyl ligand, which could be a promising candidate for the stabilization of multiply bonded uranium compounds.