Palladium(II) complexes containing N,N′-bidentate imine ligands derived from picolinaldehyde and substituted anilines: Synthesis, structure and polymerisation of methyl methacrylate
作者:Suhyun Park、Jaegyeong Lee、Jong Hwa Jeong、Hyosun Lee、Saira Nayab
DOI:10.1016/j.poly.2018.05.031
日期:2018.9
Palladium(II) complexes, LnPdCl2 (Ln = LA–LI), with N,N′-bidentate imine ligands derived from picolinaldehyde and substituted anilines have been synthesized and structurally characterized. Molecular structures revealed a distorted square plane geometry around Pd(II) centre in LnPdCl2 (Ln = LA–LC) obtained via coordination with pyridine and imine nitrogens and two chloro ligands. Pd(II) complexes LnPdCl2
摘要已合成了钯(II)配合物LnPdCl2(Ln = LA–LI),具有由吡啶啉醛和取代的苯胺衍生的N,N'-双齿亚胺配体,并对其结构进行了表征。分子结构揭示了通过与吡啶和亚胺氮以及两个氯配体的配位而获得的LnPdCl2(Ln = LA–LC)中Pd(II)中心周围扭曲的方平面几何。Pd(II)络合物LnPdCl2(Ln = LA–LI)在改性甲基铝氧烷(MMAO)存在下引发甲基丙烯酸甲酯(MMA)的聚合。LIPdCl2络合物(配体被N-糠基取代)显示出最高的MMA聚合催化活性,在60°C下的活性为7.08×104 g PMMA / mol·Pd·h。所有的配合物均产生富含间苯二酚的聚(甲基丙烯酸甲酯)(PMMA)([rr] = 0.70)。尤其,