Pre-assembly required: Nickel(II) complexes containing a Schiff-base ligand derived from tris(2-aminoethyl)amine and acetylacetone, salicylaldehyde, or ortho-vanillin
作者:Eric A. Bowman、Benjamin L. England、Makayla A. Patterson、Natalie S. Price、Kaitlyn E. Stepler、Harrison A. Curnutte、Robert E. Lease、Christopher A. Bradley、Peter R. Craig
DOI:10.1016/j.ica.2021.120415
日期:2021.9
characterized seven new nickel(II) complexes that each incorporate tris(2-aminoethyl)amine (tren) and a deprotonated carbonyl-containing compound, both as two separate ligands and when condensed into a 1:1 Schiff-base ligand. We found the application of an existing literature procedure to be unsuccessful in procuring the Schiff-base variants without first assembling the ligand. IR, UV–VIS, magnetic susceptibility
我们已经制备并表征了七个新的镍(II)配合物,每个配合物都包含三(2-氨基乙基)胺(tren)和去质子化的含羰基化合物,它们既是两个单独的配体,又被浓缩成1:1的席夫碱配体。我们发现现有的文献程序的应用在没有先组装配体的情况下就不能成功地获得席夫碱变体。获得了制备的配合物的红外,紫外-可见,磁化率,元素和熔点数据。还通过X射线衍射对其中的三种化合物进行了表征,并给出了[Ni(acac)(tren)] BPh 4(1),[Ni(trensal)(OH 2)] ClO 4(5)和[Ni(trenvan)] BPh 4 ·H 2 O(7)([acac] - =乙酰丙酮配体,[trensal] - = en和水杨醛的1:1质子化缩合产物,[trenvan] - =质子化1 tren和邻-香兰素的1:1缩合产物)。我们还筛选了具有生物活性的复合物。复合物中的两个,[镍(trenacac)] BPH 4(4)和[镍(trensal)]