作者:Joseph H. Rivers、Richard A. Jones
DOI:10.1039/c3dt50758k
日期:——
Reactions of Co(PMe3)3Cl or CoCl2 with 3,5-(CF3)2-PzNa in hexane give Co(PMe3)3(3,5-(CF3)2-Pz) (1) and Co(PMe3)3(3,5-(CF3)2-Pz)2 (2) respectively (3,5-(CF3)2-PzNa = sodium bis-trifluoromethylpyrazolate). Reaction of (3,5-(CF3)2-PzH) with Co(PMe3)4 produces the unusual complex [cis-Co(PMe3)4H2][Co(PMe3)(3,5-(CF3)2-Pz)3] (3) which formally contains a [Co(III)]+[Co(II)]− complex ion pair. Reaction of 3,5-(CF3)2-PzLi with an oxygenated suspension of CoCl2 and 3 equivalents of PMe3 gives (3,5-(CF3)2-Pz)2Co(μ-3,5-(CF3)2-Pz)(μ-OPMe3)Li(OPMe3)2 (4), while 2 reacts with LiOH to give [(PMe3)Co(μ-3,5-(CF3)2-Pz)2(μ3-OH)Li]2 (5). Both 2 and 3 react with O2 in toluene solution to give Co(OPMe3)2(3,5-(CF3)2-Pz)2 (6). All compounds have been characterized spectroscopically and by single crystal X-ray diffraction studies.
Co(PMe3)3Cl 或 CoCl2 与 3,5-(CF3)2-PzNa 在己烷中反应,分别得到 Co(PMe3)3(3,5-(CF3)2-Pz) (1) 和 Co(PMe3)3(3,5-(CF3)2-Pz)2 (2)(3,5-(CF3)2-PzNa = 双三氟甲基吡唑酸钠)。(3,5-(CF3)2-PzH)与 Co(PMe3)4 反应生成了不常见的[顺式-Co(PMe3)4H2][Co(PMe3)(3,5-(CF3)2-Pz)3]复合物 (3),其中正式包含了[Co(III)]+[Co(II)]-复合物离子对。3,5-(CF3)2-PzLi 与 CoCl2 和 3 等量 PMe3 的含氧悬浮液反应生成 (3,5-(CF3)2-Pz)2Co(μ-3,5-(CF3)2-Pz)(μ-OPMe3)Li(OPMe3)2 (4),而 2 与 LiOH 反应生成 [(PMe3)Co(μ-3,5-(CF3)2-Pz)2(μ3-OH)Li]2(5)。2 和 3 在甲苯溶液中与 O2 反应,得到 Co(OPMe3)2(3,5-(CF3)2-Pz)2 (6)。所有化合物都通过光谱和单晶 X 射线衍射研究进行了表征。