物理化学学报2012，Vol.28Issue(8)：1815-1822,8.DOI:10.3866/PKU.WHXB201206123
Co(Ⅱ)与烟酸类分子形成的配位聚合物的晶体结构与孔道稳定性
Crystal Structures and Pore Stability of Coordination Polymers Constructed by Nicotinic Acid and Isonicotinic Acid with Co(ll)
摘要
Abstract
Nicotinic acid and isonicotinic acid were utilized to react with Co(NO3)2 in N.N1-dimethylformamide (DMF) in solvothermal conditions respectively, and resulted in three new coordination polymers: [Co2(U2-H2O)(nicotinic acid)4·(DMF)] (1), [Co2(isonicotinic acid)4· (DMF)] (2), and [Co(isonicotinic acid)2 · (DMF)] (3). Single crystal X-ray diffraction (XRD) and elemental analysis were performed to obtain structural information on these compounds. Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and N2 isotherm analysis were utilized to investigate the pore stability of the three compounds. The above experiments reveal that compound 1 has a diamond-like topology, and the one-dimensional (1D) channels in compound 1 are stable after the removal of DMF molecules. Compounds 2 and 3 were synthesized at 100 and 160 ℃ by the coordination of isonicotinic acid with Co(Ⅱ), respectively. The coordination modes of isonicotinic acid to Co(ll) are completely different in the two compounds, which lead to two different crystal structures. The 1D channels in compounds 2 and 3 were not stable after the removal of DMF molecules.关键词
配位聚合物/烟酸/晶体结构/拓扑/傅里叶变换红外光谱/孔道稳定性Key words
Coordination polymer/ Nicotinic acid/ Crystal structure/ Topology/ Fourier transform infrared spectroscopy/ Pore stability分类
化学化工引用本文复制引用
华小辉,李维红,徐怡庄,吴瑾光..Co(Ⅱ)与烟酸类分子形成的配位聚合物的晶体结构与孔道稳定性[J].物理化学学报,2012,28(8):1815-1822,8.基金项目
国家自然科学基金(20671007)资助项目 （20671007）
