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Synthesis and Oxidative Stability of an Anionic Perfluoroethyl Cobalt(III) Complex
Helvetica Chimica Acta ( IF 1.5 ) Pub Date : 2020-08-26 , DOI: 10.1002/hlca.202000149
Scott T. Shreiber 1 , David A. Vicic 1
Affiliation  

Upon reaction of the versatile tris(perfluoroethyl) cobalt(III) precursor [fac‐(MeCN)3Co(C2F5)3] with potassium tris(pyrazolyl)borate (KTp) in the presence of a tetraphenylphosphonium salt, κ2‐ and κ3‐ adducts of the scorpionate ligand with cobalt were observed. Heating this mixture to 50 °C induced complete κ3‐coordination of the Tp ligand to cobalt to afford the anionic complex [PPh4][(κ3‐Tp)Co(C2F5)3] in 81 % yield. This new fluoroalkyl cobalt complex was characterized by NMR and UV‐Vis spectroscopies, X‐ray crystallography, and cyclic voltammetry. The oxidation of [PPh4][(κ3‐Tp)Co(C2F5)3] occurs at much less‐positive potentials relative to the related [(MeCN)3Co(C2F5)3] and [(tpy)Co(C2F5)3] derivatives.

中文翻译:

阴离子全氟乙基钴(III)配合物的合成和氧化稳定性

一旦通用的三(全氟乙基)钴(III)前体的反应[ FAC - (MeCN中)3有限公司(C 2 ˚F 53 ]与氢三(吡唑基)在四苯基鏻盐的存在下硼酸盐(KTP),κ 2 -和κ 3 -观察到具有钴的配位体蝎的加合物。此混合物加热至50℃诱导的完整κ 3的TP的-coordination配体与钴,得到阴离子络合物[PPH 4 ] [(κ 3 -TP)有限公司(C 2 ˚F 53产率为81%。这种新的氟代烷基钴络合物的特征在于NMR和UV-Vis光谱,X射线晶体学和循环伏安法。的氧化[PPH 4 ] [(κ 3 -TP)有限公司(C 2 ˚F 53 ]发生在相对于相关的[(MeCN中)少得多的阳性电位3有限公司(C 2 ˚F 53 ]和[ (tpy)Co(C 2 F 53 ]衍生物。
更新日期:2020-10-30
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