Salt metathesis for the synthesis of M–Al and M–H–Al bonds
作者:Ian M. Riddlestone、Juan Urbano、Nicholas Phillips、Michael J. Kelly、Dragoslav Vidovic、Joshua I. Bates、Russell Taylor、Simon Aldridge
DOI:10.1039/c2dt31974h
日期:——
variety of chelatingN-donor substituents at aluminium and including the first examples of such systems featuring ancillary guanidinato frameworks. Importantly, this synthetic approach can be extended to the synthesis of σ-alane complexes through the use of hydride-containing transitionmetal nucleophiles. Cp′Mn(CO)2-[H(Cl)Al(NiPr)2CPh}] synthesized via this route features an alane ligand bound in a
盐复分解已被用于M–Al键的合成中,并通过铝上各种N-供体的螯合取代基得以稳定,并且包括具有辅助胍基构架的此类系统的第一个实例。重要的是,这种合成方法可以通过使用含氢化物的过渡金属亲核试剂扩展到σ-丙氨酸配合物的合成。通过此路线合成的CP'Mn(CO)2- [H(Cl)Al (N i Pr)2 CPh}]具有阿兰 配体比其他配体更“侧对”结合 阿兰 尽管DFT计算暗示了与Mn–H–Al角变化相关的势能表面是非常柔软的,但它是复杂的。
σ-Alane Complexes of Chromium, Tungsten, and Manganese
作者:Ian M. Riddlestone、Siân Edmonds、Paul A. Kaufman、Juan Urbano、Joshua I. Bates、Michael J. Kelly、Amber L. Thompson、Russell Taylor、Simon Aldridge
DOI:10.1021/ja2119892
日期:2012.2.8
Photolytic ligand displacement and salt metathesis routes have been exploited to give access to kappa(1) sigma-alane complexes featuring Al-H bonds bound to [W(CO)(5)] and [Cp'Mn(CO)(2)] fragments, together with a related kappa(2) complex of [Cr(CO)(4)]. Spectroscopic, crystallographic, and quantum chemical studies are consistent with the alane ligands acting predominantly as sigma-donors, with the resulting binding energies calculated to be marginally greater than those found for related dihydrogen complexes.