Hydrates of N-((10-Chloroanthracen-9-yl)methyl)-3-(1H-imidazol-1-yl)propan-1-ammonium Cobalt(II), Copper(II), and Zinc(II) 2,6-Pyridinedicarboxylate: Reversible Crystallization

IF 3.7 3区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Abhay Pratap Singh,  and , Jubaraj B. Baruah*, 
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引用次数: 0

Abstract

In a quest to explore interconvertible assemblies of hydrates of cobalt(II), copper(II), and zinc(II) 2,6-pyridinedicarboxylate (26-pdc), complexes having cation of a chloro-substituted analogue N-{(10-chloroanthracen-9-yl)methyl}-3-(1H-imidazol-1-yl)propan-1-amine were investigated. In the case of cobalt and copper complexes, a crystallized stable hydrate and a less stable methanol hydrate were guided by concentration-dependent crystallizations. The unit-cells of the crystals of the methanol hydrates of the two cobalt and copper complexes each belong to the P1̅ space group but have different stoichiometries as well as large differences in packing. These hydrates could be reversibly crystallized in a predictable manner. The unit-cell volumes of the methanol hydrate of the cobalt complex were four-times smaller than that of the respective stable form (C2/c space group), whereas similar hydrates of the copper complex had a two-times smaller unit-cell volume than that of the stable form. The cations of the stable forms assembled together and formed zigzag ladder-like chains. The spaces present in between the assembled chains were filled with clusters of face to face stacked anions. The transformation to stable form required a bottom-up building process of the unit-cell starting from a smaller unit-cell of the less stable hydrates. Fluorescence spectroscopic studies showed the possibility of two forms of assemblies of the zinc-complex in solution, but crystallization had yielded only the stable form.

2,6-吡啶二羧酸盐N-((10-氯蒽-9-基)甲基)-3-(1h -咪唑-1-基)丙-1-铵钴(II)、铜(II)和锌(II)的水合物:可逆结晶
为了探索钴(II)、铜(II)和锌(II) 2,6-吡啶二羧酸盐(26-pdc)水合物的可互转换组合,研究了具有氯取代类似物N-{(10-氯蒽-9-基)甲基}-3-(1h -咪唑-1-基)丙烷-1-胺阳离子的配合物。在钴和铜配合物的情况下,结晶稳定的水合物和不太稳定的甲醇水合物是由浓度依赖性结晶引导的。两种钴和铜配合物的甲醇水合物晶体的单位胞均属于P1′空间群,但具有不同的化学计量和较大的堆积差异。这些水合物可以以一种可预测的方式可逆结晶。钴配合物的甲醇水合物的单位电池体积比相应的稳定形式(C2/c空间群)小4倍,而铜配合物的类似水合物的单位电池体积比稳定形式小2倍。稳定形态的阳离子聚集在一起,形成了锯齿状的阶梯状链条。在组装链之间存在的空间充满了面对面堆叠的阴离子簇。向稳定形态的转变需要从较小的不稳定水合物的单元胞开始的自下而上的单元胞构建过程。荧光光谱研究表明溶液中锌络合物可能有两种形式的组装,但结晶只产生了稳定的形式。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACS Omega
ACS Omega Chemical Engineering-General Chemical Engineering
CiteScore
6.60
自引率
4.90%
发文量
3945
审稿时长
2.4 months
期刊介绍: ACS Omega is an open-access global publication for scientific articles that describe new findings in chemistry and interfacing areas of science, without any perceived evaluation of immediate impact.
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