Synthesis, crystal structure, infrared spectrum, and thermal properties of [Ni(1,10-phenanthroline)3](fumarate)·9H2O complex with hydrogen bonded supramolecular layers involving fumarate anions

IF 0.9 Q4 CHEMISTRY, MULTIDISCIPLINARY
A. Uhrinová, J. Černák
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引用次数: 1

Abstract

Abstract From the aqueous-ethanolic system Ni(OH)2—H2fum—phen (H2fum = fumaric acid, phen = 1,10-phenanthroline), novel complex [Ni(phen)3](fum)·9H2O (1) was isolated and characterized by chemical analyses and FT-IR spectroscopy. Results of single crystal X-ray structure analysis have shown that the ionic crystal structure of 1 is built of [Ni(phen)3]2+ complex cations, fumarate dianions and nine crystallographically independent water molecules of crystallization. The Ni(II) atom exhibits hexa-coordination by three phen ligands with mean Ni-N bond length of 2.090 Å. Water molecules form hydrophilic supramolecular layers with fumarate dianions via extended network of O—H···O type hydrogen bonds with O···O distances from the range of 2.676(2)—2. 916(2) Å; hydrophobic complex cations are embedded between these layers. Thermal study of 1 has shown that endothermic dehydration in the temperature range of 95—195 °C takes at least two steps of the process. Graphical Abstract Crystal structure of [Ni(phen)3]fum·9H2O (phen = 1,10-phenanthroline; H2fum = fumaric acid) which is built of supramolecular layers formed by hydrogen bonded water solvate molecules and fum dianions and between the supramolecular layers embedded [Ni(phen)3]2+ complex cations is described here.
含富马酸阴离子的氢键超分子层[Ni(1,10-菲罗啉)3](富马酸)·9H2O配合物的合成、晶体结构、红外光谱和热性能
摘要从Ni(OH)2-H2fum-phen(H2fum=富马酸,phen=1,10-菲罗啉)乙醇水溶液体系中分离得到新型配合物[Ni(phen)3](fum)·9H2O(1),并用化学分析和红外光谱对其进行了表征。单晶X射线结构分析结果表明,1的离子晶体结构是由[Ni(phen)3]2+复合阳离子、富马酸二胺离子和9个结晶水分子组成的。Ni(II)原子通过三个phen配体表现出六配位,平均Ni-N键长为2.090Å。水分子通过O-H··O型氢键的扩展网络与富马酸二阴离子形成亲水性超分子层,O··O距离在2.676(2)-2范围内。916(2)Å;疏水性复合阳离子嵌入在这些层之间。对1的热研究表明,在95-195°C的温度范围内吸热脱水至少需要两个步骤。本文描述了[Ni(phen)3]fum·9H2O(phen=1,10-菲罗啉;H2fum=富马酸)的晶体结构,该晶体由氢键水溶剂化物分子和fum二胺离子形成的超分子层以及嵌入[Ni(Phn)3]2+复合阳离子的超分子层之间构建。
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来源期刊
Acta Chimica Slovaca
Acta Chimica Slovaca CHEMISTRY, MULTIDISCIPLINARY-
自引率
12.50%
发文量
11
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