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  • 期刊

Hydrothermal Synthesis and Structure of the Cobalt(Ⅱ) Complex Based on Pyridinedicarboxylate

利用水熱合成含吡啶雙羧酸之鈷金屬配位化合物及其結構分析

摘要


將CoCl2⋅6H2O、2,5-吡啶雙羧酸以及4,4'-雙吡啶加水混合,利用水熱合成,得到單核的鈷(Ⅱ)錯合物,其化學式為[Co(C7H4NO4)2(H2O)2]。利用元素分析儀、FTIR光譜儀以及X-Ray晶體繞射儀,測定產物晶體結構及性質,結果顯示錯合物是以鈷(Ⅱ)離子為反置中心,含兩個吡啶環上的N原子、兩個第二位置羧酸上的O原子以及兩個配位水分子,配位構成六配位扭曲八面體型的幾何結構,具有C2的對稱性。由於吡啶雙羧酸以及配位水分子,因分子間的氫鍵作用,使得此晶體結構很穩定。

並列摘要


The hydrothermal reaction of cobalt (Ⅱ) chloride hexahydrate with 2, 5-pyridinedicarboxylic acid and 4, 4'-dipyridyl gave a mononuclear Co(Ⅱ) compound, the empirical formula of [Co(C7H4NO4)2(H2O)2]. The crystalline product have been characterized by elemental analysis, FTIR spectroscopy, and X-ray diffraction. The title compound, the coordination sphere of the Co metal, is distorted octahedral coordination with an approximate C2 symmetry. It is defined by two pyridine N atom, two carboxylato O atoms and two water O atoms in cis positions. The crystal structure is stabilized by intermolecular O-H⋅⋅⋅O hydrogen bonds between carboxy and water O atoms.

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