Ni(II) complexes of tripodal N4 ligands as catalysts for alkane hydroxylation and O-arylation of phenol: Structural and reactivity effects induced by fluoro substitution
作者:Wissame Kerbib、Siddhant Singh、Divyanshu Nautiyal、Arun Kumar、Sushil Kumar
DOI:10.1016/j.ica.2020.120191
日期:2021.3
paramagnetic NMR), elemental analysis, electrochemistry and X-ray diffraction techniques. In structurally similar complexes 1 and 2, Ni(II) center has a distorted octahedral coordination geometry constituted by all the four N atoms of the ligands, one acetate group and a water molecule. Complex 3 has different structural aspects. It does not have the water molecule in the coordination sphere and contains one acetate
摘要氟化三脚架配体衍生的镍(II)配合物[NiII(L1-2)(OAc)(H2O)] [BPh4](1-2)和[NiII(L3)(OAc)] [BPh4](3) 。N-(((6-氟吡啶-2-基)甲基)(吡啶-2-基)-N-(吡啶-2-基甲基)甲胺(L1或FTPA),N,N'-双((6-氟吡啶-合成并通过光谱学(紫外可见)表征了2-基)甲基)(吡啶-2-基)甲胺(L2或F2TPA)和三((6-氟吡啶-2-基)甲基)胺(L3或F3TPA) ,FT-IR,顺磁NMR),元素分析,电化学和X射线衍射技术。在结构相似的配合物1和2中,Ni(II)中心具有扭曲的八面体配位几何结构,该构型由配体的所有四个N原子,一个乙酸酯基和一个水分子构成。配合物3具有不同的结构方面。它在配位域中没有水分子,并且包含一个乙酸盐基团,其与金属中心以二齿模式结合。所有的配合物均表现出对应于NiII / NiIII氧化还原对