Sun Zhen-Hai, Meng Ling-Bo, Lin Hua
School of Chemistry and Life Sciences, Harbin University, Harbin 150080, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2009 Feb 18;65(Pt 3):m280. doi: 10.1107/S160053680900470X.
In the title compound, [Co(C(6)H(4)N(5))(2)(H(2)O)(2)], the Co atom is bonded to two water mol-ecules and two bidentate 5-(2-pyrid-yl)tetra-zolate ligands resulting in a slightly distorted octa-hedral CoN(4)O(2) coordination geometry. The Co(II) cation is situated on a crystallographic center of inversion. The asymmetric unit therefore comprises one-half of the mol-ecule. The four N atoms belonging to two bidentate 5-(2-pyrid-yl)tetra-zolate ligands lie in the equatorial plane and the two associated water mol-ecules are observed in the axial coordination sites. The crystal structure exhibits a three-dimensional supra-molecular network assembled by inter-molecular O-H⋯N hydrogen bonds.
在标题化合物[Co(C₆H₄N₅)₂(H₂O)₂]中，Co原子与两个水分子和两个双齿5-(2-吡啶基)四唑配体键合，形成略微扭曲的八面体CoN₄O₂配位几何结构。Co(II)阳离子位于晶体学对称中心上。因此，不对称单元包含半个分子。属于两个双齿5-(2-吡啶基)四唑配体的四个N原子位于赤道平面，在轴向配位位点观察到两个相关的水分子。晶体结构通过分子间O-H⋯N氢键形成三维超分子网络。
