新方法合成配合物异烟酸钴(Ⅱ)

SYNTHESIS OF COMPLEX [Co(iso)_2(H_2O)_4] WITH NEW METHOD

在水热条件下以吡啶 -4-甲醛为反应原料 ,与高氯酸钴 ( )反应合成了标题配合物 ,并通过红外光谱和单晶衍射进行了结构表征 .晶体结构分析表明 ,钴 ( )离子形成了畸变的八面体结构 ,2个异烟酸根离子的2个氮原子及 2个水分子的 2个氧原子分布在赤道平面上 ,而另外 2个水分子的 2个氧原子则占据在轴线上 .通过分子之间的氢键作用 ,以及吡啶环之间的π-π堆积作用 。

Title complex [Co(iso)_2(H_2O)_4] (where iso stands for the anion of isonicotinic acid) was synthesized with a new method,by means of hydrothermal treatment of pyridine-4-carboxaldehyde and Co(ClO_4)_2·6H_2O.The complex was characterized by IR spectroscopy.The X-Ray crystal structure analysis revealed that Co ion was coordinated in a slightly distorted octahedron with two pyridyl N atoms and two aqua O atoms in equational positions and another two aqua O atoms in axial positions.Three-dimensional supramolecular network was formed via intensive hydrogen-bonding and π-π stacking interactions.