First Report on Crystal Engineering of Hg(II) Halides with Fully Substituted 3,4-Pyridinedicarboxamides: Generation of Two-Dimensional Coordination Polymers and Linear Zig-Zag Chains of Mercury Metal Ions
作者:Love Karan Rana、Sanyog Sharma、Geeta Hundal
DOI:10.1021/acs.cgd.5b00989
日期:2016.1.6
Two new ligands N,N,N′,N′-tetraisopropyl/tetraisobutyl-3,4-pyridinedicarboxamide L1–L2 and six of their Hg(II)X2 complexes (where X = Cl–, Br–, and I–) have been synthesized and characterized. Single crystal X-ray structures of three complexes of L1 (1–3) with HgCl2/Br2/I2 and two complexes of L2 (4–5) with HgCl2/Br2 show that these are two-dimensional (2D) coordination polymers, with three different
两个新的配体N,N,N ',N'-四异丙基/四异丁基-3,4-吡啶二甲酰胺L1 - L2及其六个Hg(II)X 2配合物(其中X = Cl –,Br –和I –)已经合成和表征。L1(1 – 3)与HgCl 2 / Br 2 / I 2的三个配合物和L2(4 – 5)与HgCl 2 / Br的两个配合物的单晶X射线结构图2显示,它们是二维(2D)配位聚合物,具有三种不同的(一种新的)拓扑结构和五种配位的Hg(II)离子,呈方形金字塔形配位。复杂6,的L2与HGI 2,是用四协调四面体汞柱的二聚体(II)离子。配体表现为用于形成配位聚合物(CP)的两个或三个连接子,但在二聚体中仅一个连接子。对于所有配合物和配体L1,已经计算,分析和讨论了各种类型的氢键和其他非共价相互作用。尽管碘化物的大小和软度加上大异丁基的空间效应是主要导致碘的一级结构改变的原因。参见图6,还发现半本地化的LP···π和C