Alam Naveed, Zeller Matthias, Ahmad Tajidi Nur Syamimi, Arifin Zainudin, Mazhar Muhammad
Acta Crystallogr Sect E Struct Rep Online. 2011 Aug 1;67(Pt 8):m1065-6. doi: 10.1107/S1600536811025815. Epub 2011 Jul 9.
The environment of the Co(II) ion in the title compound, Co(SO(4))(C(6)H(7)N)(2)(H(2)O)(2), exhibits an octa-hedral configuration with the two 3-methyl-pyridine ligands lying in cis positions with respect to each other and trans to the two coordinated water mol-ecules. The axial positions are occupied by O atoms of the sulfate ions. Co and S atoms occupy special positions (twofold axis, Wyckoff position 4c). Neighboring Co(II) ions are covalently connected with each other through the sulfate ions, thus creating infinite polymeric chains that run along the c axis. The water mol-ecules are connected with neighboring sulfate ions through strong O-H⋯O hydrogen bonds. Intra-molecular hydrogen bonds parallel to the propagation direction of the chains stabilize the polymeric chains, and inter-molecular hydrogen bonds between chains connect neighboring chains with each other, thus leading to polymeric double chains.
标题化合物[Co(SO₄)(C₆H₇N)₂(H₂O)₂]ₙ中Co(II)离子的环境呈现八面体构型，两个3 - 甲基吡啶配体彼此处于顺式位置且与两个配位水分子呈反式。轴向位置由硫酸根离子的O原子占据。Co和S原子占据特殊位置（二重轴，Wyckoff位置4c）。相邻的Co(II)离子通过硫酸根离子彼此共价连接，从而形成沿c轴延伸的无限聚合链。水分子通过强O - H⋯O氢键与相邻的硫酸根离子相连。平行于链传播方向的分子内氢键使聚合链稳定，链间的分子间氢键将相邻链相互连接，从而形成聚合双链。
