Safbri Siti Artikah M, Halim Siti Nadiah Abdul, Tiekink Edward R T
Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
Centre for Crystalline Materials, Faculty of Science and Technology, Sunway University, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia.
Acta Crystallogr E Crystallogr Commun. 2016 Jan 20;72(Pt 2):203-8. doi: 10.1107/S2056989016000700. eCollection 2016 Feb 1.
The common feature of the title compounds, [Zn(C5H10NO2S2)2(C10H8N2)]·2H2O, (I), and [Zn(C6H12NOS2)2(C10H8N2)], (II), is the location of the Zn(II) atoms on a twofold rotation axis. Further, each Zn(II) atom is chelated by two symmetry-equivalent and symmetrically coordinating di-thio-carbamate ligands and a 2,2'-bi-pyridine ligand. The resulting N2S4 coordination geometry is based on a highly distorted octa-hedron in each case. In the mol-ecular packing of (I), supra-molecular ladders mediated by O-H⋯O hydrogen bonding are found whereby the uprights are defined by {⋯HO(water)⋯HO(hy-droxy)⋯} n chains parallel to the a axis and with the rungs defined by 'Zn[S2CN(CH2CH2)2]2'. The water mol-ecules connect the ladders into a supra-molecular layer parallel to the ab plane via water-O-H⋯S and pyridyl-C-H⋯O(water) inter-actions, with the connections between layers being of the type pyridyl-C-H⋯S. In (II), supra-molecular layers parallel to the ab plane are sustained by hy-droxy-O-H⋯S hydrogen bonds with connections between layers being of the type pyridyl-C-H⋯S.
标题化合物[Zn(C₅H₁₀NO₂S₂)₂(C₁₀H₈N₂)]·2H₂O（I）和[Zn(C₆H₁₂NOS₂)₂(C₁₀H₈N₂)]（II）的共同特征是Zn(II)原子位于二重旋转轴上。此外，每个Zn(II)原子均由两个对称等效且对称配位的二硫代氨基甲酸盐配体和一个2,2'-联吡啶配体螯合。在每种情况下，所得的N₂S₄配位几何结构均基于高度扭曲的八面体。在（I）的分子堆积中，发现了由O-H⋯O氢键介导的超分子梯子，其中立柱由平行于a轴的{⋯HO(水)⋯HO(羟基)⋯}n链定义，梯级由“Zn[S₂CN(CH₂CH₂)₂]₂”定义。水分子通过水-O-H⋯S和吡啶基-C-H⋯O(水)相互作用将梯子连接成平行于ab平面的超分子层，层间连接为吡啶基-C-H⋯S类型。在（II）中，平行于ab平面的超分子层由羟基-O-H⋯S氢键维持，层间连接为吡啶基-C-H⋯S类型。
