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作 者:熊俊[1] 吕少仿 彭俊军[1] 李明[1] 李伟[1] 杨水彬[2]
机构地区:[1]武汉纺织大学化学与化工学院,武汉430200 [2]黄冈师范学院化工学院,黄冈438000
出 处:《无机化学学报》2017年第9期1649-1655,共7页Chinese Journal of Inorganic Chemistry
基 金:the foundation of Wuhan Textile University (Grant No.165002)~~
摘 要:以二苯并18-冠-6,3-氟-4-甲基苯铵盐以及多金属氧酸盐[Mo6O19]2-为原料,使用溶剂挥发法合成了有机无机杂化材料[(3-F-4-Me Anis)(DB[18]crown-6)]2[Mo6O19]·2CH3CN(1)(3-F-4-Me Anis=3-氟-4-甲基苯铵盐;DB[18]crown-6=二苯并18-冠-6);以18-冠-6,2-氟-4-甲基苯铵盐以及多金属氧酸盐[SMo12O40]2-为原料,运用H管扩散法制备了晶体材料[(2-F-4-Me Anis)([18]crown-6)]2[SMo12O40]·2CH3CN(2)(2-F-4-Me Anis=2-氟-4-甲基苯铵盐;[18]crown-6=18-冠-6)。通过红外光谱、元素分析、热重分析和X射线单晶结构分析对化合物进行了表征。结构分析表明,晶体1和2通过非共价键自组装作用构建而成,冠醚基超分子阳离子是通过N-H…O氢键作用形成。在晶体1和2中,超分子阳离子和多酸阴离子交错堆积形成包合物结构,沿着a轴方向观察,发现每个多酸阴离子被6个超分子阳离子包围着形成六边形堆积结构。通过晶体结构研究和热重分析表明,二苯并18-冠-6中的苯环在维持晶体1的稳定性方面具有重要的作用。Two new inorganic-organic hybrids [(3-F-4-MeAnis)(DB[18]crown-6)]2[Mo6O19]·2CH3CN (1) and [(2-F-4- MeAnis)([ 18]crown-6)]2[SMo1204o] · 2CH3CN (2) (3-F-4-MeAnis=3-fluoro-4-methylanilinium, DB[ 18]crown-6=dibenzo [18]crown-6,2-F-4-MeAnis =2-fluoro-4-methylanilinium) have been synthesized and characterized by infrared spectrum (IR), elemental analysis (EA), thermosgravimetric analysis (TGA) and X-ray diffraction. Compounds 1 and 2 are constructed through noncovalent bonding interaction and the polyoxometalates (POMs) and supramolecular cation arrange alternately. Supramolecular cation forms through the N-H ." O hydrogen bonding interaction between the nitrogen atom of anilinium and oxygen atoms of crown ether derivatives. In the crystals of 1 and 2, each polyoxoanion is surrounded by six supramolecular cations and forms hexagonal arrangement viewed along the a axis. Crystalline structure and TGA indicated that phenyl rings in DB[18]crown-6 plays an important role in maintaining the stability of compound 1.
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