Stable Magnesium(I) Compounds with Mg-Mg Bonds

@article{Green2007StableMC,
  title={Stable Magnesium(I) Compounds with Mg-Mg Bonds},
  author={Shaun P. Green and Cameron Jones and Andreas Stasch},
  journal={Science},
  year={2007},
  volume={318},
  pages={1754 - 1757}
}
The chemistry of the group 2 metals (beryllium, magnesium, calcium, strontium, and barium) is dominated by the +2 oxidation state. Here, we report the reductions of two magnesium(II) iodide complexes with potassium metal in toluene, leading to thermally stable magnesium(I) compounds, (L)MgMg(L) (where L is [(Ar)NC(NPri2)N(Ar)]– or {[(Ar)NC(Me)]2CH}–, Ar is 2,6-diisopropylphenyl, Me is methyl, and Pri is isopropyl) in moderate yields. The results of x-ray crystallographic and theoretical studies… 
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