镍
钴
等结构
氢键
化学
电化学
结晶学
无机化学
分子
配位聚合物
循环伏安法
聚合物
联吡啶
2,2'-联吡啶
高分子化学
晶体结构
有机化学
物理化学
电极
作者
Ivana Škugor Rončević,Nives Vladislavić,Nabanita Chatterjee,Vesna Sokol,Clive L. Oliver,Boris‐Marko Kukovec
出处
期刊:Chemosensors
[MDPI AG]
日期:2021-12-10
卷期号:9 (12): 352-352
被引量:3
标识
DOI:10.3390/chemosensors9120352
摘要
The 6-oxonicotinate (6-Onic) salts of a one-dimensional cationic cobalt(II) or nickel(II) coordination polymers with 4,4′-bipyridine (4,4′-bpy), namely {[Co(4,4′-bpy)(H2O)4](6-Onic)2·2H2O}n (1) and {[Ni(4,4′-bpy)(H2O)4](6-Onic)2·2H2O}n (2), were prepared hydrothermally by reactions of cobalt(II) nitrate hexahydrate or nickel(II) nitrate hexahydrate, respectively, 6-hydroxynicotinic acid and 4,4′-bipyridine in a mixture of ethanol and water. In the hydrogen-bonded frameworks of 1 and 2, the one-dimensional polymeric chains of {[M(4,4′-bpy)(H2O)4]2+}n (M = Co, Ni), the 6-oxonicotinate anions and the lattice water molecules were assembled via strong intermolecular O–H···O and N–H···O hydrogen bonds and π–π interactions, leading to the formation of the representative hydrogen-bond ring motifs: trimeric R23(10) motif, the centrosymmetric tetrameric R24(8) and R24(12) motifs and the pentameric R45(12) motif. The isostructural coordination polymers 1 and 2 exhibited a different electrochemical behavior, as observed by cyclic voltammetry, which can be attributed to the nature of the metal ions (cobalt(II) vs. nickel(II)).
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