Pacifico Jessica, Stoeckli-Evans Helen
Institute of Chemistry, University of Neuchâtel, Av. de Bellevax 51, CH-2000 Neuchâtel, Switzerland.
Institute of Physics, University of Neuchâtel, rue Emile-Argand 11, CH-2000 Neuchâtel, Switzerland.
IUCrdata. 2022 Feb 1;7(Pt 2):x220077. doi: 10.1107/S2414314622000773. eCollection 2022 Feb.
The reaction of AgNO with the ligand 2,2',2'',2'''-{[pyrazine-2,3,5,6-tetra-yltetra-kis-(methyl-ene)]tetra-kis-(sulfanedi-yl)}tetra-acetic acid in the presence of a potassium acetate buffer lead to the formation of a silver(I)-potassium-organic framework, poly[dipotassium [(μ-2,2',2'',2'''-{[pyrazine-2,3,5,6-tetra-yltetra-kis(methyl-ene)]tetra-kis-(sulfanedi-yl)}tetra-acetato)-disilver(I)] 5.2-hydrate], {K[Ag(CHNOS)]·5.2HO} , (). The asymmetric unit is composed of half a binuclear silver complex located about a center of symmetry, a potassium cation and 2.6 disordered water mol-ecules. The whole binuclear silver complex is generated by inversion symmetry with the pyrazine ring being located about an inversion centre. The ligand coordinates in a bis-tetra-dentate manner. The binuclear silver complex anions are linked bridging Ag⋯S⋯Ag zigzag bonds, forming a network lying parallel to the plane. The networks are linked by O⋯ ⋯O bridging bonds to form a framework. The disordered water mol-ecules are present near to the K cations.
在醋酸钾缓冲液存在下，硝酸银与配体2,2',2'',2'''-{[吡嗪-2,3,5,6-四亚基四(亚甲基)]四(硫代二亚基)}四乙酸反应，生成一种银(I)-钾有机骨架，聚[二钾[(μ-2,2',2'',2'''-{[吡嗪-2,3,5,6-四亚基四(亚甲基)]四(硫代二亚基)}四乙酸根)-二银(I)]5.2水合物]，{K[Ag(CHNOS)]·5.2HO} ，()。不对称单元由位于对称中心的半个双核银配合物、一个钾阳离子和2.6个无序水分子组成。整个双核银配合物通过反演对称性产生，吡嗪环位于反演中心。配体以双四齿方式配位。双核银配合物阴离子通过桥连Ag⋯S⋯Ag锯齿键相连，形成一个平行于平面的网络。这些网络通过O⋯ ⋯O桥连键相连形成一个骨架。无序水分子存在于K阳离子附近。
