Steric and Electronic Effects in the Formation and Carbon Disulfide Reactivity of Dinuclear Nickel Complexes Supported by Bis(iminopyridine) Ligands
作者:Amarnath Bheemaraju、Jeffrey W. Beattie、Erwyn G. Tabasan、Philip D. Martin、Richard L. Lord、Stanislav Groysman
DOI:10.1021/om400187v
日期:2013.5.24
new family of bis(iminopyridine) ((N,N′-1,1′-(1,4-phenylene)bis(N-(pyridin-2-ylmethylene)methanamine) and N,N′-1,1′-(1,4-phenylene)bis(N-(1-(pyridin-2-yl)ethylidene)methanamine)) dinickel complexes, synthesized their CS2 compounds, and studied their reactivity. Bis(iminopyridine) ligands L react with Ni(COD)2 to form Ni2(L)2 complexes or Ni2(L)(COD)2 complexes as a function of the steric and electronic
我们正在开发用于协同激活杂丙二烯的双金属平台。为了实现这一目标,我们设计了双新的家庭(亚氨基吡啶)((ñ,ñ '1,1' - (1,4-亚苯基)二(ñ - (吡啶-2-基亚甲基)甲胺)和ñ,ñ '-1,1'-(1,4-亚苯基)双(N-(1-(吡啶-2-基)亚乙基)甲胺))二镍配合物,合成了它们的CS 2化合物,并研究了它们的反应性。 )配体L与Ni(COD)2反应形成Ni 2(L)2络合物或Ni 2(L)(COD)2配合物作为配体前体的空间和电子性质的函数。产品结构披露了Ni 2(L)(COD)2物种的抗几何结构和Ni 2(L)2络合物的螺旋(抗)结构。将CS 2添加到Ni 2(L)(COD)2中,或在L与2当量的Ni(COD)的一锅反应中,获得高收率的二硫化碳加合物Ni 2(L)(CS 2)2)2和CS 2。Ni 2(L)(CS 2)2配合物具有很高的柔韧性,在固态时显示顺式和反式构象(最短的S-