2-Pyridyl-phosphine and -diphosphine complexes of nickel(0), their reactivity (including aqueous solution chemistry), and some related, incidental methylphosphonium iodides
作者:Matthew D. Le Page、Brian O. Patrick、Steven J. Rettig、Brian R. James
DOI:10.1016/j.ica.2015.04.003
日期:2015.5
Ni(CO)2[2H-d(py)pcp]}2+ being isolated as the bis(triflate) salt; the dication decomposes in minutes with formation of [Ni(H2O)6]2+, CO, the phosphine dioxide, and deprotonated d(py)pcp. Some twenty-two Ni0 complexes, exemplified by Ni(P–P)2, Ni(PNx)2(P–P), Ni(PNx)4, and related PPh3- and Ph2P(CH2)2PPh2 (dppe)-containing species, are synthesized from Ni(1,5-COD)2 and their reactivity studied; for
摘要Ni(CO)2L2型Ni0-二羰基(吡啶基膦)配合物的化学性质,其中L为P键结合的PPh3-npyn(n = 1-3,py = 2-吡啶基;缩写为PNx,x = 1– 3,1a–c)或L2是(P–P)螯合的py2P(CH2)2Ppy2或,是我们小组从较早的研究中进一步开发的[P–P配体分别缩写为d(py) pe和d(py)pcp]。由Ni(CO)2(PPh3)2的C6H6溶液合成配合物,并检测到Ni(CO)2(PPh3)(PNx)中间体(1a ∗ –c ∗);X射线分析表明Ni(CO)2 [d(py)pcp](2b)具有扭曲的四面体结构;从CDCl3溶液中的光诱导反应中分离出NiII物质[Ni2(CO)4(μ-PN2)2] Cl4。络合物2b在环境条件下通过吡啶基N原子的净双质子化作用溶于水,分离出Ni(CO)2 [2H-d(py)pcp]} 2+为双(三氟甲磺酸盐)盐;指示剂在几分钟内分解,形成[Ni(H2O)6]