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

DOI: 10.4236/ajac.2013.48045   PDF   HTML     2,811 Downloads   4,780 Views  


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.

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T. Fujimoto, D. Miura, T. Kato, O. Kamo, Y. Shimoikeda, T. Machinami and M. Tashiro, "Complex Formation of 1,6-Anhydro-β-Maltose and Sodium Ions Using Single-Crystal X-Ray Crystallography and NMR Spectroscopy," American Journal of Analytical Chemistry, Vol. 4 No. 8, 2013, pp. 361-367. doi: 10.4236/ajac.2013.48045.

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The authors declare no conflicts of interest.


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