Nickel Complexes Having (N-C-N) Tridentate Ligands

Journal of the Korean Chemical Society

Dong Hwan Lee¹  Soonheum Park¹ 

关键词: Ã˸Å;    »êÈ­¼º ÷°¡¹ÝÀÀ;    bis(imino)aryl;    NCN-pincer;    Terdentate;    Ni(II) pincer complex;    Catalyst;    Oxidative addition;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Monomeric complexes of nickel(II) having terdentate bis(imino)aryl ligands (N,C,N-pincer) are reported.New complexes (2,6-(ArN=CH)2C6H3)NiBr (Ar=2,6-dimethylphenyl (1), 2,6-diisopropylphenyl (2)) have been synthesizedthrough oxidative addition of 1,3-(ArN=CH)2C6H3Br (bis(N-Ar)-2-bromoisophthalaldimine: Ar=Ph-2,6-Me2, Ph-2,6-iPr2)to Ni(COD)2 (COD=1,5-cyclooctadiene), in high yields. The development of a synthetic route to ligands and nickel complexesis outlined. The complexes were characterized by IR, 1H-NMR and elemental analysis. Full characterization ofcomplexes 1 and 2 is discussed. An investigation into the catalytic activity of the complexes in ethylene polymerizationwas performed, resulting in no formation of polyethylenes but producing a small amount of oily oligomers. Preliminaryresults indicate that the pincer complexes were found to be inactive as catalysts in ethylene polymerization.

【 授权许可】

Unknown