Yousuf S, Johnson A S, Kazmi S A, Offiong O E, Fun Hoong-Kun
Acta Crystallogr Sect E Struct Rep Online. 2011 Apr 1;67(Pt 4):m509-10. doi: 10.1107/S1600536811011147. Epub 2011 Mar 31.
In the complex anion of the title compound, (C(2)H(6)N(5))[Cu(C(7)H(4)NO(4))(C(7)H(3)NO(4))]·3H(2)O, the Cu(II) atom is coordinated by tridentate 6-carb-oxy-pyridine-2-carboxyl-ate and pyridine-2,6-dicarboxyl-ate ligands and is surrounded by four O atoms in the equatorial plane and two N atoms in axial positions in a distorted octa-hedral geometry. In the crystal, the components are linked into a three dimensional network by O-H⋯O, N-H⋯O, N-H⋯N and C-H⋯O hydrogen bonds and a π-π inter-action with a centroid-centroid distance of 3.6080 (8) Å.
在标题化合物(C₂H₆N₅)[Cu(C₇H₄NO₄)(C₇H₃NO₄)]·3H₂O的复合阴离子中,Cu(II)原子由三齿的6 - 羧基吡啶 - 2 - 羧酸根和吡啶 - 2,6 - 二羧酸根配体配位,在扭曲的八面体几何构型中,其赤道平面被四个O原子包围,轴向位置被两个N原子包围。在晶体中,各组分通过O - H⋯O、N - H⋯O、N - H⋯N和C - H⋯O氢键以及质心 - 质心距离为3.6080(8)Å的π - π相互作用连接成三维网络。