Abstract

A new Ni(II) and Pb(II) polymer [NiPb(dpdc)]_n 1 (H₂dpdc = 2,6-dimethyl-pyridine-3,5-dicarboxylic acid) was synthesized under hydrothermal conditions. The compound crystallizes in the triclinic system, space group P-1 with the final R = 0.0243 and wR = 0.0579 for 3590 observed reflections with I > 2σ(I). The compound presents a three-dimensional (3 D) network extended by dpdc^2- anions employing a chelating coordination mode. From the topology point of view, the structure could be described as a (3,4)-connected 3 D network with (4.8.10)(8².10)₂(4.8.10³.12) topology net. Infrared spectroscopy, elemental analyses, thermogravimetric analysis and the single-crystal X-ray diffraction properties of 1 are also investigated.

摘要

在水热条件下合成了一种新的 Ni(II) 和 Pb(II) 聚合物 [NiPb(dpdc)] _n 1 (H _{2 dpdc = 2,6-dimethyl-pyridine-3,5-dicarboxy acid)。}该化合物在三斜晶系中结晶，空间群P-1，最终R  = 0.0243 和wR  = 0.0579，观察到 3590 次反射，I  > 2 σ ( I )。该化合物呈现出由采用螯合配位模式的 dpdc ^2-阴离子扩展的三维 (3D) 网络。从拓扑的角度来看，该结构可以描述为一个 (3,4)-连接的 3D 网络，具有 (4.8.10)(8 ² .10) ₂(4.8.10 ³ .12) 拓扑网络。还研究了1的红外光谱、元素分析、热重分析和单晶X射线衍射特性。