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Keywords:

  • cluster compounds;
  • coordination chemistry;
  • gallium;
  • molybdenum;
  • zinc
Thumbnail image of graphical abstract

Surrounded by zinc: The reaction of [Mo(GaCp*)6] and Zn(CH3)2 zinc yields the exceptionally high-coordinate title compound (see picture; Mo red, Zn green, C gray). Quantum chemical analysis reveals a unique bonding situation best described as a perfectly sd5 hybridized molybdenum atom with 12 valence electrons engaged in Mo[BOND]Zn bonding. Another six electrons are delocalized over the Zn cage, evoking only weak Zn[BOND]Zn interactions.