Complex Formation of 1,6-Anhydro-<i>β</i>-Maltose and Sodium Ions Using Single-Crystal X-Ray Crystallography and NMR Spectroscopy  

作　　者：Takashi Fujimoto Daisuke Miura Takayuki Kato Osamu Kamo Yuichi Shimoikeda Tomoya Machinami Mitsuru Tashiro 

机构地区：[1]Department of Chemistry, School of Sciences and Engineering, Meisei University, Hino, Japan [2]Solution & Marketing Division, JEOL RESONANCE Inc., Akishima, Japan

出　　处：《American Journal of Analytical Chemistry》2013年第8期361-367,共7页美国分析化学（英文）

摘　　要：Complex formation of 1,6-anhydro-β-maltose and sodium ions was characterized using single-crystal X-ray crystallography and solution- and solid-state NMR spectroscopy. The 7-coordination structure, comprising two 1,6-anhydro-β-maltoses, a thiocyanate ion and a sodium ion, was identified in the crystal of the complex, where a sodium ion was positioned in the center of the pentagon. In the NMR study, the line broadening of 23Na signals and the decrease of the spin-lattice relaxation times (T1) of 23Na were observed in CD3OD in the presence of 1,6-anhydro-β-maltose, indicating complex formation.Complex formation of 1,6-anhydro-β-maltose and sodium ions was characterized using single-crystal X-ray crystallography and solution- and solid-state NMR spectroscopy. The 7-coordination structure, comprising two 1,6-anhydro-β-maltoses, a thiocyanate ion and a sodium ion, was identified in the crystal of the complex, where a sodium ion was positioned in the center of the pentagon. In the NMR study, the line broadening of 23Na signals and the decrease of the spin-lattice relaxation times (T1) of 23Na were observed in CD3OD in the presence of 1,6-anhydro-β-maltose, indicating complex formation.

关 键 词：1 6-Anhydro-β-Maltose COMPLEX Formation SINGLE-CRYSTAL X-Ray CRYSTALLOGRAPHY Solid-State NMR Spectroscopy 

分 类 号：O6[理学—化学]