Reaction of [VO(acac)2] (acac = acetylacetonate) with N’-(5-chloro-2-hydroxybenzylidene)-3-methoxybenzohydrazide (H2L1) and N’-(2-hydroxy-4-methoxybenzylidene)-4-nitrobenzohydrazide (H2L2) in methanol affords methanol-coordinated mononuclear oxovanadium(V) complexes, [VOL1(OMe)(MeOH)] (1) and [VOL2(OMe)(MeOH)] (2), respectively. The complexes were characterized by elemental analysis, FT-IR, 1H NMR and 13C NMR spectra. Crystal and molecular structures of the complexes were determined by single crystal X-ray diffraction method. Single crystal X-ray structural studies indicate that the hydrazone ligands coordinate to the VO core through enolate oxygen, phenolate oxygen and azomethine nitrogen. The V atoms in the complexes are in octahedral coordination. Thermal stabilities of the complexes have also been studied.
[VO(acac)2](acac =
乙酰丙酮)与 N'-(5-
氯-2-羟基亚苄基)-3-
甲氧基苯甲酰
肼(H2L1)和 N'-(2-羟基-4-甲氧基亚苄基)-4-
硝基苯甲酰
肼(H2
L2)在
甲醇中反应生成
甲醇配位的单核氧
钒(V)配合物、[VOL1(OMe)(MeOH)] (1) 和 [VO
L2(OMe)(MeOH)] (2)。这些配合物通过元素分析、傅立叶变换红外光谱、1H NMR 和 13C NMR 光谱进行了表征。单晶 X 射线衍射法测定了复合物的晶体和分子结构。单晶 X 射线结构研究表明,腙
配体通过烯醇氧、
苯酚氧和氮杂腙氮与 VO 核心配位。配合物中的 V 原子呈八面体配位。此外,还对配合物的热稳定性进行了研究。