Two coordination polymers, namely [Co（5-Clnic）2（H2biim）]n 1 and {[Ni（5-Clnic）（Hbiim）]·H2O}n 2（5-Clnic H = 5-halonicotinic acid, H2 biim = 2,2ˊ-biimidazole）, were assembled. Single-crystal X-ray diffrac...Two coordination polymers, namely [Co（5-Clnic）2（H2biim）]n 1 and {[Ni（5-Clnic）（Hbiim）]·H2O}n 2（5-Clnic H = 5-halonicotinic acid, H2 biim = 2,2ˊ-biimidazole）, were assembled. Single-crystal X-ray diffraction studies show that compound 1 possesses a 1D chain coordination network, which is further extended into a 3D supramolecular architecture via N–H…O hydrogen bonds and π-π packing interactions. Compound 2 features a 1D chain structure based on the hexanuclear macrocycles. The adjacent 1D chains are held together into a 3D supramolecular framework via N–H…O and O–H…O hydrogen bonding interactions. Thermal stability and magnetic properties of both compounds were studied and discussed.展开更多
文摘以环己烷(C6H12)为放电介质,石墨做电极,可制备洋葱状富勒烯(Onion-like Fullerenes,OLFs)和多壁碳纳米管.利用场发射扫描电子显微镜(Field Emission Scanning Electron Microscopy,FESEM)和高分辨透射电镜(High Resolution Transmission Electron Microscopy,HRTEM)对阴极表面的产物进行了形貌结构表征,采用紫外线可视光谱仪分析了残余的环己烷溶液,结果表明:洋葱状富勒烯和多壁碳纳米管在阴极表面的沉积物中均被发现且占多数,残余的环己烷溶液中的固体沉积物中也有洋葱状富勒烯生成.
基金supported by the Natural Science Foundation of Shanxi Province(No.2013011011-6)the Subject Team of Taiyuan University of Science and Technology
文摘Two coordination polymers, namely [Co（5-Clnic）2（H2biim）]n 1 and {[Ni（5-Clnic）（Hbiim）]·H2O}n 2（5-Clnic H = 5-halonicotinic acid, H2 biim = 2,2ˊ-biimidazole）, were assembled. Single-crystal X-ray diffraction studies show that compound 1 possesses a 1D chain coordination network, which is further extended into a 3D supramolecular architecture via N–H…O hydrogen bonds and π-π packing interactions. Compound 2 features a 1D chain structure based on the hexanuclear macrocycles. The adjacent 1D chains are held together into a 3D supramolecular framework via N–H…O and O–H…O hydrogen bonding interactions. Thermal stability and magnetic properties of both compounds were studied and discussed.
