Derikvand Zohreh, Olmstead Marilyn M
Acta Crystallogr Sect E Struct Rep Online. 2010 May 15;66(Pt 6):m642-3. doi: 10.1107/S1600536810016776.
The title compound, (C(13)H(11)N(2))(2)[Ni(C(7)H(3)NO(4))(2)]·3H(2)O, consists of a mononuclear anionic complex, two 9-amino-acridinium cations and three uncoordinated water mol-ecules. Two pyridine-2,6-dicarboxyl-ate (pydc) ligands are bound to the Ni(II) ion, giving an NiN(2)O(4) bonded set. The coordination geometry around the Ni(II) atom is distorted octa-hedral. There are two types of robust O-H⋯O hydrogen-bond synthons, namely R(6) (6)(24) and R(2) (4)(8), which link the complex anions and water mol-ecules to each other. N-H⋯O hydrogen bonds connect the stacks of anions and cations in the structure. Other inter-molecular inter-actions, including weak C-H⋯O hydrogen bonds, π-π [shortest centroid-centroid distance = 3.336 (7) Å] and C-O⋯π [O⋯centroid distance = 3.562 (10) Å] inter-actions, connect the various components.
标题化合物（C₁₃H₁₁N₂）₂[Ni（C₇H₃NO₄）₂]·3H₂O由一个单核阴离子配合物、两个9-氨基吖啶鎓阳离子和三个未配位的水分子组成。两个吡啶-2,6-二羧酸酯（pydc）配体与Ni（II）离子配位，形成一个NiN₂O₄键合结构。Ni（II）原子周围的配位几何构型为畸变八面体。存在两种类型的强O-H⋯O氢键合成子，即R₆⁶²⁴和R₂⁴⁸，它们将配合物阴离子和水分子相互连接。N-H⋯O氢键连接结构中的阴离子和阳离子堆积。其他分子间相互作用，包括弱C-H⋯O氢键、π-π[最短质心-质心距离 = 3.336（7）Å]和C-O⋯π[O⋯质心距离 = 3.562（10）Å]相互作用，连接了各种组分。
