Affiliation:
1. School of Chemistry, Monash University, Post Office Box 23, Victoria 3800, Australia.
2. School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, UK.
Abstract
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(NPr
i
2
)N(Ar)]
–
or {[(Ar)NC(Me)]
2
CH}
–
, Ar is 2,6-diisopropylphenyl, Me is methyl, and Pr
i
is isopropyl) in moderate yields. The results of x-ray crystallographic and theoretical studies are consistent with central Mg
2+
2
units that have single, covalent magnesium-magnesium bonding interactions with 2.8508 ± 0.0012 (standard deviation) and 2.8457 ± 0.0008 angstrom bond lengths, respectively, and predominantly ionic interactions with the anionic ligands (L).
Publisher
American Association for the Advancement of Science (AAAS)
Cited by
705 articles.
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