Oxovanadium(V) complexes with tripodal bisphenolate and monophenolate ligands: Syntheses, structures and catalytic activities
作者:Md. Kamal Hossain、Matti Haukka、George C. Lisensky、Ari Lehtonen、Ebbe Nordlander
DOI:10.1016/j.ica.2018.11.049
日期:2019.3
mononuclear oxovanadium(V) complexes are formed upon oxidation of the metal precursor. Single crystal X-ray structure analysis show that complexes 1 and 2 have distorted octahedral coordination spheres, in which the amino bisphenolate coordinates in a tetradentate or tridentate manner, respectively, and the coordination spheres are completed by methoxy or acetylacetonato ligands. Complex 3 has a slightly
摘要[VO(acac)2](acac– =乙酰丙酮酸酯)与三脚架氨基双酚6,6'-((((2-morpholinoethyl)azanediyl)bis(methyl))bis(2,4-di-tert)之间的反应-丁基苯酚)(H2L1)和6,6'-((((噻吩-2-基甲基)氮杂二基)双(亚甲基))双(2,4-二叔丁基苯酚)(H2L2)以及四齿氨基苯酚2,2'-(((3,5-二叔丁基-2-羟基苄基)氮杂二基)双(乙烷-1-醇)(H3L3)提供了配合物[VO(L1)(OMe)](1),相应地,[VO(L2)(acac)](2)和[VO(L3)](3)。配合物1和3也可以使用VOSO4·xH2O或[VO(OPr)3]作为钒的前体来制备。当使用[VO(acac)2]或VOSO4·xH2O时,金属前体氧化后会形成单核氧钒(V)络合物。单晶X射线结构分析表明,配合物1和2的八面体配位球体变形,其中氨基