Preparation and properties of sandwiched trinuclear palladium(II) complexes with tridentate phosphine and phosphine sulfide ligands
作者:Sen-ichi Aizawa、Tatsuya Kawamoto、Suji Nishigaki、Ayano Sasaki
DOI:10.1016/j.jorganchem.2011.03.018
日期:2011.6
and trans(S) PdX2 (X = Cl, Br, I) moieties, respectively. The tripodal triphosphine, 1,1,1-tris(diphenylphosphinomethyl)ethane (i-p3), and its mono- and tri-sulfide, which have shorter carbon chains compared with pOp3, form the mononuclear dichloro palladium(II) complexes with cis(P) and cis(S) geometries. Difference in the catalytic activity for the C–C coupling reaction was discussed in connection
通过与二乙基二硫化物的反应,将三脚架四齿三[3-(二苯基膦基)乙基]膦(pp 3)的中心膦基选择性氧化,得到三齿膦配体pOp 3。使末端膦基与硫反应,得到pOp 3三硫化物(pOp 3 S 3)。将三个钯(II)离子夹在两个pOp 3和pOp 3 S 3配体中,以形成分别具有三个反式(P)和反式(S)PdX 2(X = Cl,Br,I)部分的三核配合物。三脚架三膦,1,1,1-三(二苯基膦甲基)乙烷(i -p 3)及其单硫化物和三硫化物(与pOp 3相比具有较短的碳链)形成具有顺式(P)和顺式(S)几何形状的单核二氯钯(II)配合物。针对配合物的配位基团和几何形状,讨论了CC偶联反应的催化活性差异。