Crystal Structures and Antifungal Activities of Fluorine-Containing Thioureido Complexes with Nickel(II)
作者:Chun Li、Wen Yang、Huanhuan Liu、Mengying Li、Weiqun Zhou、Juan Xie
DOI:10.3390/molecules181215737
日期:——
Ni(II) complexes with N-2-fluorobenzoylpiperidine-1-carbothioimidate (L2−), N-4-fluorobenzoylpiperidine-1-carbothioimidate (L3−), N-2-fluorobenzoylmorpholine- 1-carbothioimidate (L5−) and N-4-fluorobenzoylmorpholine-1-carbothioimidate (L6−) have been synthesized and characterized by elemental analysis, FTIR and 1H-NMR. The crystal structures of three ligands (HL2, HL3 and HL6) and the corresponding Ni(II) complexes ([Ni(L2)2], [Ni(L3)2] and [Ni(L6)2]) have been determined by X-ray diffraction. The antifungal activities of the Ni(II) complexes together and the corresponding ligands against the fungi Botrytis cinerea, Trichoderma spp., Myrothecium and Verticillium spp. have been investigated. The experimental results showed that the ligands and their complexes have antifungal abilities. When the fluorine was substituted on the para-benzoyl moiety, the antifungal activity of the ligands was obviously increased. Moreover, the ligands were stronger than their complexes in inhibiting fungal activities. The antifungal ability of HL6 is especially strong, and similar to that of the commercial fungicide fluconazole.
合成了 N-2-氟苯甲酰基哌啶-1-硫代亚胺酸(L2-)、N-4-氟苯甲酰基哌啶-1-硫代亚胺酸(L3-)、N-2-氟苯甲酰基吗啉-1-硫代亚胺酸(L5-)和 N-4-氟苯甲酰基吗啉-1-硫代亚胺酸(L6-)的 Ni(II) 配合物,并通过元素分析、傅立叶变换红外光谱和 1H-NMR 对其进行了表征。 通过 X 射线衍射测定了三种配体(HL2、HL3 和 HL6)和相应的 Ni(II) 复合物([Ni(L2)2]、[Ni(L3)2] 和 [Ni(L6)2])的晶体结构。研究了 Ni(II) 复合物和相应配体对灰霉病菌、毛霉属真菌、霉菌和轮枝霉菌的抗真菌活性。实验结果表明,配体及其配合物具有抗真菌能力。当对苯甲酰基上的氟被取代后,配体的抗真菌活性明显提高。此外,配体对真菌的抑制作用强于其配合物。HL6 的抗真菌能力特别强,与商用杀真菌剂氟康唑的抗真菌能力相似。