The synthesis of new methallyl-ferrocenyl-thiazoline-nickel complexes [1-(2-thiazolin-2-yl)-2-(R-thio)-ferrocene-κ²N,S]-(η³-methallyl)nickel(II) [Y] (1-3, R = Me, i-Pr, Ph, Y = BF₄^- 4, R = Me, Y = BAr´₄^-) by reaction with 2-ferrocenyl-2-thiazoline ligands L1–3 with [Ni-(η³-(CH₂)₂CMe)Cl]₂ in presence of fluoroborate salts (Y = BAr´₄^-; BF₄^-) is reported. The complexes 1–4 were obtained in high yields, and characterized by ¹H, ¹³C, ¹⁹F and ¹¹B NMR, FTIR. The X-Ray diffraction analysis of 4 confirmed the formation of a single isomer containing a nickel center coordinated to L₁ in a bidentate [N,S] fashion and to a η³-methallyl ligand. These complexes catalyzed efficiently the ethylene oligomerization when tris(pentafluorophenyl)borane (BCF) was used as co-activator. All catalytic precursors produced C₄ and C₆ fractions. Complex 1 showed higher activity with TOF 3006 h^-1 at room temperature with selectivity of 86% to C₄ fraction. In contrast, catalyst 2 was more selective to the formation of 1-butene, but with low activity. DFT-Computational studies of complex-BCF adducts show than these species behave as frustrated Lewis pairs, mainly stabilized by long-range interactions enhancing the acceptor character of the complexes. Structural modifications over the sulfanyl group tune the acceptor character of Ni center, affecting their catalytic performance.

的新的甲代烯丙基二茂铁基噻唑啉镍络合物[1-（2-噻唑啉-2-基）-2-（R-硫代） -二茂铁-κ的合成² N，S] - （η ³ -methallyl）镍（ II）[Y]（1 - 3，R = Me中，我-Pr中，Ph，Y = BF ₄ ^- 4， R = Me中，Y = BAr' ₄ ^- ）通过反应与2-二茂铁基-2-噻唑啉配体大号1-3 [Ni基（η ³ - （CH ₂）₂ CME）CL] ₂在氟硼酸盐（Y = BAr'的存在₄ ^- ; BF ₄ ^-）被报告。配合物1-4以高收率获得，其特征在于¹ H，¹³ C，¹⁹ F和¹¹ B NMR，FTIR。的X射线衍射分析4证实含有配位到中心镍单一异构体的形成大号₁在二齿[N，S]和时尚的η ³ -methallyl配体。当使用三（五氟苯基）硼烷（BCF）作为共活化剂时，这些配合物有效地催化了乙烯的低聚反应。所有催化前体均产生C ₄和C ₆馏分。配合物1在TOF 3006 h ^-1下表现出更高的活性在室温下对C ₄馏分的选择性为86％。相反，催化剂2对1-丁烯的形成更具选择性，但是活性低。DFT-复合物-BCF加合物的计算研究表明，这些物种表现为沮丧的路易斯对，主要是通过增强复合物受体特性的远程相互作用而稳定的。硫烷基上的结构修饰会调节Ni中心的受体特性，从而影响其催化性能。