Soleimannejad Janet, Gholizadeh Samira
School of Chemistry, College of Science, University of Tehran, Tehran, Iran.
Acta Crystallogr Sect E Struct Rep Online. 2012 Jul 1;68(Pt 7):m952-3. doi: 10.1107/S160053681202630X. Epub 2012 Jun 20.
The asymmetric unit of the ionic title compound, (C(6)H(7)N(2)O)[Bi(C(7)H(3)NO(4))(2)(H(2)O)(2)]·H(2)O or (acpyH)[Bi(pydc)(2)(H(2)O)(2)]·H(2)O, contains an Bi(pydc)(2)(H(2)O)(2) anion (where pydcH(2) is pyridine-2,6-dicarb-oxy-lic acid), a protonated 3-(amino-carbon-yl)pyridine as counter-ion, (acpyH)(+), and one uncoordinated water mol-ecule. The anion is an eight-coordinate complex with a square-anti-prismatic geometry around the Bi(III) atom. In the crystal, extensive O-H⋯O and N-H⋯O hydrogen bonds, as well as ion pairing, C=O⋯π inter-actions [O⋯centroid distance = 3.583 (5) Å], π-π stacking [centroid-centroid distance = 3.864 (3) Å], and C-H⋯π and C-H⋯O inter-actions, play an important role in the formation and stabilization of the three-dimensional supra-molecular structure.
离子型标题化合物（C₆H₇N₂O）[Bi（C₇H₃NO₄）₂（H₂O）₂]·H₂O 或（acpyH）[Bi（pydc）₂（H₂O）₂]·H₂O 的不对称单元包含一个 [Bi（pydc）₂（H₂O）₂]⁻ 阴离子（其中 pydcH₂ 为吡啶 -2,6 - 二羧酸）、一个作为抗衡离子的质子化 3 -（氨基甲酰基）吡啶（acpyH⁺）和一个未配位的水分子。该阴离子是一个八配位配合物，Bi（III）原子周围具有四方反棱柱几何构型。在晶体中，广泛的 O - H⋯O 和 N - H⋯O 氢键以及离子对、C = O⋯π 相互作用 [O⋯质心距离 = 3.583（5）Å]、π - π 堆积 [质心 - 质心距离 = 3.864（3）Å] 以及 C - H⋯π 和 C - H⋯O 相互作用在三维超分子结构的形成和稳定中起重要作用。
