New imino-pyridyl nickel(II) complexes: Synthesis, molecular structures and application as Heck coupling catalysts

作者：Motswainyana William M; Onani Martin O^*; Ojwach Stephen O; Omondi Bernard

来源：Inorganica Chimica Acta, 2012, 391: 93-97.

DOI：10.1016/j.ica.2012.04.037

• Imino-pyridyl
• Nickel complexes
• Crystal structure
• Heck coupling reactions

Reactions of imino-pyridyl ligands, (2-pyridyl-2-thiophenemethyl) imine (L1) and (2-pyridyl-2-thiopheneethyl) imine (L2) with NiBr2(DME) gave the corresponding complexes [Ni(L1)Br-2] (1) and [Ni(L2)Br-2] (2) in good yields. Treatment of 1 and 2 with one equivalent of 2-hydroxythiophenol resulted in the displacement of the bromide ligands to form the nickel(II) thiolato complexes 3 and 4. Molecular structure of 3 confirmed that L1 and L2 bind to the nickel atom in a bidentate fashion. Complexes 1-4 catalyzed the Heck coupling reaction of iodobenzene and bromobenzene with methyl acrylate.

• 出版日期2012-8-30