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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >1,8,9-Substituted anthracenes,intramolecular phosphine donor stabilized metaphosphonate and phosphenium
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1,8,9-Substituted anthracenes,intramolecular phosphine donor stabilized metaphosphonate and phosphenium

机译:1,8,9取代的蒽,分子内膦供体稳定的偏膦酸酯和

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摘要

A series of 1,8,9-tris(phosphorus)substituted anthracenes was synthesised and fully characterised. Their molecular geometry is such that the middle phosphorus atom is in a highly congested space,with terminal phosphorus atoms in close proximity. The middle phosphorus atom accepts electron density from none,one or both terminal phosphorus atoms to form P-P bonds. Thus phosphino(repulsively interacting),metaphosphonato(single donor stabilised)as well as phosphenium(doubly phosphine donor stabilised)environments around the phosphorus atom in position 9 were synthesized and structurally characterised. Observed P ...P distances range from 2.22 to 3.27 A.
机译:合成并完全表征了一系列的1,8,9-三(磷)取代的蒽。它们的分子几何结构使得中间的磷原子处于高度拥挤的空间,末端的磷原子非常接近。中间的磷原子接受来自一个,一个或两个末端磷原子的电子密度以形成P-P键。因此,合成并在结构上表征了9位磷原子周围的膦(排斥相互作用),间膦酸(稳定了单供体)以及(稳定了双膦供体)环境。观察到的P ... P距离范围为2.22至3.27 A.

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