Palladium(II) and Platinum(II) Compounds of 1,1′-Bis(phosphino)metallocene (M = Fe, Ru) Ligands with Metal–Metal Interactions
作者:Kathryn M. Gramigna、Jeremy V. Oria、Chelsea L. Mandell、Margaret A. Tiedemann、William G. Dougherty、Nicholas A. Piro、W. Scott Kassel、Benny C. Chan、Paula L. Diaconescu、Chip Nataro
DOI:10.1021/om400494t
日期:2013.10.28
tert-butyl groups is essential, as similar reactions with [Pd(PP)Cl2] (PP = other 1,1′-bis(phosphino)ferrocene ligands) results in the formation of [Pd(PP)(μ-Cl)]22+. The analogous platinum compounds have also been investigated and appear to behave in a similar manner. Similar compounds of the type [M′(PP)(PR3)]2+ (M′ = Pd, Pt, R = Ph, Me) have been prepared, and a metal–metal interaction has also been
[Pd(dtbpf)Cl 2 ](dtbpf = 1,1'-双(二叔丁基膦基)二茂铁)与化学氧化剂的反应出乎意料地导致了[Pd(dtbpf)Cl] +的形成。进一步的研究发现,可以使用多种试剂从[Pd(dtbpf)Cl 2 ]中提取氯离子配体,以生成[Pd(dtbpf)Cl] +。固态结构表明形成了Fe-Pd相互作用。庞大的叔丁基基团的存在是必不可少的,因为与[Pd(PP)Cl 2 ](PP =其他1,1'-双(膦基)二茂铁配体)的相似反应会导致[Pd(PP) (μ-Cl)] 2 2+。还研究了类似的铂化合物,它们似乎以相似的方式起作用。制备了类似的[M'(PP)(PR 3)] 2+类型的化合物(M'= Pd,Pt,R = Ph,Me),并且还观察到金属之间的相互作用。立体效应和电子效应决定了这些化合物的形成。获得了其中8种化合物的X射线晶体结构,并将其用作金属与金属相互作用的计算分析的基