Synthesis of a Stable Compound with Fivefold Bonding Between Two Chromium(I) Centers

@article{Nguyen2005SynthesisOA,
  title={Synthesis of a Stable Compound with Fivefold Bonding Between Two Chromium(I) Centers},
  author={T. Nguyen and A. D. Sutton and M. Brynda and J. Fettinger and G. Long and P. Power},
  journal={Science},
  year={2005},
  volume={310},
  pages={844 - 847}
}
Although in principle transition metals can form bonds with six shared electron pairs, only quadruply bonded compounds can be isolated as stable species at room temperature. Here we show that the reduction of {Cr(μ-Cl)Ar′}2 [where Ar′ indicates C6H3-2,6(C6H3-2,6-Pri2)2 and Pr indicates isopropyl] with a slight excess of potassium graphite has produced a stable compound with fivefold chromium-chromium (Cr–Cr) bonding. The very air- and moisture-sensitive dark red crystals of Ar′CrCrAr′ were… Expand
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