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最新Science文献学习，Stable Magnesium(I) Compounds
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Stable Magnesium(I) Compounds Shaun P. Green 1, Cameron Jones 2*, Andreas Stasch 2* 1 School of Chemistry, Monash University, PO Box 23, Victoria, 3800, Australia.; School of Chemistry, Main Building, Cardiff University, Cardiff, CF10 3AT, U.K. 2 School of Chemistry, Monash University, PO Box 23, Victoria, 3800, Australia. * To whom correspondence should be addressed. Cameron Jones , E-mail: cameron.jones@sci.monash.edu.au Andreas Stasch , E-mail: andreas.stasch@sci.monash.edu.au 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)] (L = [(Ar)NC(NPri2)N(Ar)]- or [{(Ar)NC(Me)}2CH]-; Ar = 2,6-diisopropylphenyl, Pri = isopropyl) in moderate yields. The results of X-ray crystallographic and theoretical studies are consistent with central Mg22+ units that have single, covalent magnesium-magnesium bonding interactions with 2.8508(12) and 2.8457(8) angstrom bond lengths respectively (where the number in parentheses indicates the standard deviation), and predominantly ionic interactions with the anionic ligands (L). 链接：http://www.91files.com/?BX30MDKSQA3ND3JUH87X [ Last edited by brilliant on 2007-11-14 at 13:09 ] |
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2楼2007-11-14 23:02:50
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