在标题情结中,[Ni(C21H17F2N3)2]2Br4·9H2O,每个不对称单元有两个独立的金属络合物和每个金属络合物有两个配体。两种配合物的结构特征(键长和角度)几乎相同。在每个复合体中,镍(II)离子在八面体环境中由来自两个螯合(9E)-N-({6-[(E)-(4-氟-苄基-亚氨基)-甲基-基]吡啶-2-基}甲基-烯)(4-氟-苯基)甲氨胺配体的六个N原子配位。Ni-N键的长度范围为1.973(2)至2.169(2),而螯合物N-Ni-N的角度范围为77.01(10)至105.89(9)°。此外,不对称单元内有四个溴阴离子和九个溶剂水摩尔。水分子形成氢键网络,显示C-HHO,C-H→Br,O-H→Br,O-H-O和O-H-F相互作用到平行于(111)的层中。在每个单元中,一个配体的氟苯环通过π-π相互作用与另一个配体的中心环堆叠,最接近质心到平面的距离为3.445(5),3.636(5),3.397(5)和3.396(5)。
In the title complex, [Ni(C21H17F2N3)2]2Br4·9H2O, there are two independent metal complexes per asymmetric unit and two ligands per metal complex. The structural features (bond lengths and angles) of the two complexes are almost identical. In each complex, the nickel(II) ion is coordinated in an octa-hedral environment by six N atoms from two chelating (9E)-N-({6-[(E)-(4-fluoro-benzyl-imino)-meth-yl]pyridin-2-yl}methyl-ene)(4-fluoro-phen-yl)methanammine ligands. The Ni-N bond lengths range from 1.973 (2) to 2.169 (2) Å, while the chelate N-Ni-N angles range from 77.01 (10) to 105.89 (9)°. Additionally, there are four bromide anions and nine solvent water mol-ecules within the asymmetric unit. The water mol-ecules form a hydrogen-bonded network, displaying C-H⋯O, C-H⋯Br, O-H⋯Br, O-H⋯O and O-H⋯F inter-actions into layers parallel to (111). In each unit, the fluoro-phenyl rings of one ligand are stacked with the central ring of the other ligand via π-π inter-actions, with the closest centroid-to-plane distances being 3.445 (5), 3.636 (5), 3.397 (5) and 3.396 (5) Å.