Two novel Ag(I) coordination polymers (CPs), namely, [Ag3(tpom)2(NO3)3(H2O)4]n (1) and [Ag2(tpom2)(NO3)2(H2O)4]n (2), (tpom = tetrakis(4-pyridyloxymethylene)methane, tpom2 = tetrakis(3-pyridyloxymethylene)methane) have been synthesized through the reaction of silver(I) nitrate and highly-connected tetra-pyridinate ligands and structurally characterized. Complex 1 exhibits the typical uninodal 3-connected four-fold interpenetrating layered hcb network with the point (Schläfli) symbol 63} considering the tetra-pyridinate tpom ligands as tri-connected nodes, but a 2-nodal 3,4-connected self-interpenetrating 3D network with stoichiometry (3-c)2(4-c)2 and the point (Schläfli) symbol 6 × 102}62·104} considering the tetra-pyridinate tpom ligands as tetra-connected nodes. The difference between the two distinct topological structures mainly originates from the long Ag–N bond length of 2.513(3) Å in 1. In contrast, complex 2 exhibits the typical uninodal 4-connected four-fold interpenetrating 3D dia network with the point (Schläfli) symbol 66}. The flexible conformation and long connection arms of the different tetra-pyridiante ligands must be responsible for the variable interpenetrating Ag(I) coordination architectures. Additionally, results about TGA and photoluminescence spectra were also discussed.
两种新型 Ag(I) 配位聚合物 (CP),即 [Ag3(tpom)2(
NO3)3(
H2O)4]n (1) 和 [Ag2(tpom2)( )2( )4]n ( 2), (tpom = 四(4-
吡啶氧基亚甲基)
甲烷, tpom2 = 四(3-
吡啶氧基亚甲基)
甲烷) 通过
硝酸银(I) 和高度连接的四
吡啶配体的反应合成并进行了结构表征。配合物 1 表现出典型的单节 3 连接四重互穿层状 hcb 网络,其中点 (Schläfli) 符号为 63},将四
吡啶 tpom
配体视为三连接节点,但 2 节点 3,4 连接自-具有
化学计量 (3-c)2(4-c)2 和点 (Schläfli) 符号 6 × 102}62·104} 的互穿 3D 网络,将四
吡啶 tpom
配体视为四连接节点。两种不同拓扑结构之间的差异主要源于1中2.513(3) Å的长Ag-N键长。相比之下,配合物2表现出典型的单节4连接四重互穿3D直径网络,点为( Schläfli)符号66}。不同四
吡啶配体的柔性构象和长连接臂必定是造成可变的互穿Ag(I)配位结构的原因。此外,还讨论了 TGA 和光致发光光谱的结果。