Stable magnesium(I) compounds with Mg-Mg bonds

被引：631

作者：

Green, Shaun P.

Jones, Cameron

Stasch, Andreas

机构：

[1] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia

[2] Cardiff Univ, Sch Chem, Cardiff CF10 3AT, Wales

来源：

SCIENCE | 2007年 / 318卷 / 5857期

关键词：

D O I：

10.1126/science.1150856

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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(NPr2i) 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).

引用

页码：1754 / 1757

页数：4

共 26 条

[11] Four-membered group 13 metal(I) N-heterocyclic carbene analogues: Synthesis, characterization, and theoretical studies [J].