Synthesis, characterization, molecular and supramolecular structures of nickel(II) complexes derived from α-diketone and α-ketoaldehyde bisaroylhydrazones
作者:Nahed M.H. Salem、Amal R. Rashad、Laila El Sayed、W. Haase、Magdi F. Iskander
DOI:10.1016/j.poly.2009.04.007
日期:2009.7
paramagnetic five coordinate [Ni(L 1 -R)(NH 3 )] while [Ni(L 2 -R)] gave the diamagnetic square planar [Ni(L 2 -R)(NH 3 )] complexes. Reaction of [Ni(L 1 -R)] complexes with imidazole gave the corresponding paramagnetic octahedral bis(imidazole) adducts. X-ray structures of both [Ni(L 1 -H)(HIm) 2 ] and [Ni(L 1 -pNO 2 )(HIm) 2 ] suggest a distorted octahedral structure where the bisaroylhydrazone occupies the
制备并表征了一系列新的衍生自对称的二乙酰基双酰基双芳酰基hydr [Ni(L 1 -R)]和不对称的苯基乙二醛双酰基酰基aro [Ni(L 2 -R)]的镍(II)配合物。已经确定了[Ni(L 1 -H)],[Ni(L 1 -pCH 3 O)]和[Ni(L 1 -pNO 2)]的X射线晶体和分子结构。在这些络合物中,Ni(II)处于扭曲的正方形平面环境中,而酰hydr起定性的四齿配体的作用,形成一个5,5,5-三环螯合物环。[Ni(L 1 -R)]与氨水反应得到顺磁性五坐标[Ni(L 1 -R)(NH 3)],而[Ni(L 2 -R)]得到反磁性方平面[Ni(L(R)-R)]。 L 2 -R)(NH 3)]络合物。[Ni(L 1 -R)]配合物与咪唑反应得到相应的顺磁性八面体双(咪唑)加合物。[Ni(L 1 -H)(HIm)2]和[Ni(L 1 -pNO 2)(HIm)2]的X射线结构均表