Synthesis, characterization and electrochemistry of [Pd(PP)MeCl] compounds with 1,1′-bis(phosphino)ferrocene ligands

Synthesis, characterization and electrochemistry of [Pd(PP)MeCl] compounds with 1,1′-bis(phosphino)ferrocene ligands
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1,1-双(膦基)二茂铁配体[Pd(PP)MeCl]化合物的合成、表征及电化学

DOI:
10.1016/j.poly.2021.115104
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发表时间:
2021
期刊:
影响因子:
2.6
通讯作者:
Nataro, Chip
Nataro, Chip
中科院分区:
化学3区
文献类型:
--
作者:
Hendricks, Michelle E.;Xu, Xiaoyu;Boller, Thomas R.;Samples, Evan M.;Johnson, Adam R.;Nataro, Chip

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合成并表征了3种新的[Pd(κ2-PP)MeCl](PP = 1,1 ′-双(二环己基膦基)二茂铁(dcpf),1-二苯基膦基-1 ′-二叔丁基膦基二茂铁(dppdtbpf),1,1 ′-双(5-甲基-2-呋喃基膦基)二茂铁(dfurpf))化合物.得到[Pd(dppdtbpf)MeCl]的X射线晶体结构,其允许明确地确定甲基和氯配体相对于不同膦基团之间的顺式/反式关系。研究了这三种新化合物以及文献报道的[Pd(κ2-PP)MeCl](PP = 1,1 ′-双(二苯基膦基)二茂铁(dppf)或1,1 ′-双(二异丙基膦基)二茂铁(dippf))和[Pd(κ3-dtbpf)Me]Cl(dtbpf = 1,1 ′-双(二叔丁基膦基)二茂铁)的氧化电化学性质.研究了含κ2-双(膦基)二茂铁配体的化合物与四(3,5-双(三氟甲基)苯基硼酸钠)反应失去一个氯配体后对苯乙炔聚合的催化活性。
Three new [Pd(κ2-PP)MeCl] (PP = 1,1′-bis(dicyclohexylphosphino)ferrocene (dcpf), 1-diphenylphosphino-1′-ditert-butylphosphinoferrocene (dppdtbpf) or 1,1ʹ-bis(5-methyl-2-furanylphosphino)ferrocene (dfurpf)) compounds were prepared and characterized. The X-ray crystal structure of [Pd(dppdtbpf)MeCl] was obtained which allowed for unambiguous determination of thecis/trans- relationship between the methyl and chloride ligands with respect to the different phosphine groups. The oxidative electrochemistry of the three new compounds as well as that of the reported [Pd(κ2-PP)MeCl] (PP = 1,1′-bis(diphenylphosphino)ferrocene (dppf), or 1,1′-bis(diiso-propylphosphino)ferrocene (dippf)) and [Pd(κ3-dtbpf)Me]Cl (dtbpf = 1,1′- bis(ditert-butylphosphino)ferrocene) was examined. The compounds with the κ2-bis(phosphino)ferrocene ligands react with sodium tetrakis(3,5-bis(trifluoromethyl)phenylborate) to lose a chloride ligand and the catalytic activity of these compounds was investigated for the polymerization of phenylacetylene.
游离和配位1,1-双(二叔丁基膦)二茂铁的阳极电化学
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