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Complex Formation of 1,6-Anhydro-<i>β</i>-Maltose and Sodium Ions Using Single-Crystal X-Ray Crystallography and NMR Spectroscopy
Department of Chemistry, School of Sciences and Engineering, Meisei University, Hino, Japan
Department of Chemistry, School of Sciences and Engineering, Meisei University, Hino, Japan
Department of Chemistry, School of Sciences and Engineering, Meisei University, Hino, Japan
Solution & Marketing Division, JEOL RESONANCE Inc., Akishima, Japan
Solution & Marketing Division, JEOL RESONANCE Inc., Akishima, Japan
Department of Chemistry, School of Sciences and Engineering, Meisei University, Hino, Japan
Department of Chemistry, School of Sciences and Engineering, Meisei University, Hino, Japan
- 1 Department of Chemistry, School of Sciences and Engineering, Meisei University, Hino, Japan
- 2 Department of Chemistry, School of Sciences and Engineering, Meisei University, Hino, Japan
- 3 Department of Chemistry, School of Sciences and Engineering, Meisei University, Hino, Japan
- 4 Solution & Marketing Division, JEOL RESONANCE Inc., Akishima, Japan
- 5 Solution & Marketing Division, JEOL RESONANCE Inc., Akishima, Japan
- 6 Department of Chemistry, School of Sciences and Engineering, Meisei University, Hino, Japan
- 7 Department of Chemistry, School of Sciences and Engineering, Meisei University, Hino, Japan
American Journal of Analytical Chemistry·Volume 04 (2013)·Pages 361–367·Published 2 August 2013·DOI10.4236/ajac.2013.48045
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Abstract
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 23 Na signals and the decrease of the spin-lattice relaxation times ( T 1 ) of 23 Na were observed in CD 3 OD in the presence of 1,6-anhydro- β -maltose, indicating complex formation.
Keywords16-Anhydro-<i>β</i>-MaltoseComplex FormationSingle-Crystal X-Ray CrystallographySolid-State NMR Spectroscopy
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