2-Oxazoline/benzoxazole-1,10-phenanthrolinylmetal (iron, cobalt or nickel) dichloride: Synthesis, characterization and their catalytic reactivity for the ethylene oligomerization
作者:Min Zhang、Rong Gao、Xiang Hao、Wen-Hua Sun
DOI:10.1016/j.jorganchem.2008.09.046
日期:2008.12
with metal (nickel, cobalt or iron) chlorides. Their metal complexes, nickel(II) (Ni1–Ni8), cobalt(II) (Co1–Co8) and iron(II) (Fe1–Fe8), were characterized by elemental and IR spectroscopic analyses. The molecular structures of the ligand L2 and the complexes Ni3, Co1, Co3 and Fe2 have been determined by the single-crystal crystallography. The nickel complex Ni3 and iron complex Fe2 display an octahedral
合成了一系列2-苯并恶唑-1,10-菲咯啉(L1 - L4)和2-恶唑啉-1,10-菲咯啉(L5 - L8),并用作三齿N ^ N ^ N配体与金属(镍,钴或铁)氯化物。通过元素和红外光谱分析对它们的金属配合物镍(II)(Ni1 - Ni8),钴(II)(Co1 - Co8)和铁(II)(Fe1 - Fe8)进行了表征。配体L2和配合物Ni3,Co1,Co3和Fe2的分子结构已经通过单晶晶体学确定。镍络合物Ni3和铁络合物Fe2呈现八面体几何形状,而钴络合物Co1具有扭曲的双锥体几何形状,而Co3具有方形锥体形状。在乙烯为10 atm的情况下,所有络合物在用适当的铝助催化剂活化后均表现出良好的乙烯二聚活性。镍配合物,得到活性高达3.11×10 6 克摩尔-1(镍)H -1在与二乙基氯化铝(ET活化2 ALCL),同时钴和铁配合物表现出活性高达1.51×10 6 克摩尔- 1个(Co)h -1和1