SPS–Ni(II) pincer compounds of the type [Ni(phPS2)(P(C6H4-4-R)3)] Synthesis, characterization and catalytic evaluation in C S cross-coupling reactions
作者:Valente Gómez-Benítez、Hugo Valdés、Simón Hernández-Ortega、Juan Manuel German-Acacio、David Morales-Morales
DOI:10.1016/j.poly.2017.09.026
日期:2018.3
Abstract The synthesis and characterization of a series of SPS–Ni(II) pincer complexes with different para-substituted triphenylphosphines has been performed. The molecular structure of [Ni(phPS2)(PPh3)] (1) (phPS2H2 = PhP(C6H4-2-SH)2, bis(phenyl-2-thiol)phenylphosphine) was unequivocally determined by single crystal X-ray diffraction analysis. The metal centre exhibited a slightly distorted square
摘要进行了一系列具有不同对位取代的三苯基膦的SPS-Ni(II)钳形配合物的合成和表征。通过单晶X射线衍射分析明确地确定了[Ni(phPS2)(PPh3)](1)(phPS2H2 = PhP(C6H4-2-SH)2,双(苯基-2-硫醇)苯基膦)的分子结构。 。金属中心呈现出略微扭曲的正方形平面几何形状。该络合物在烷基二硫化物和芳基二硫化物与碘代苯的CS交叉偶联反应中显示出很高的催化活性,可用于生产非对称硫化物。通常,不同的对位取代的三苯基膦配体不会影响SPS-Ni(II)配合物的催化性能。然而,