NMR Study Conformations of Calcium Gluconate in the Aqueous Solution
- 作者: Akhmetov M.1, Konygin G.2, Rybin D.2, Petukhov V.1, Gumarov G.1, Konov A.1
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隶属关系:
- Zavoisky Physical-Technical Institute, Russian Academy of Sciences
- Physical-Technical Institute
- 期: 卷 48, 编号 10 (2017)
- 页面: 971-979
- 栏目: Original Paper
- URL: https://journals.rcsi.science/0937-9347/article/view/247853
- DOI: https://doi.org/10.1007/s00723-017-0918-5
- ID: 247853
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详细
Different spatial structures that arise due to rotation around simple bonds without violating the integrity of the molecule (without breaking chemical bonds) are called conformations. 1H nuclear magnetic resonance (NMR) study of the spatial structure of calcium gluconate in the aqueous solution has been carried out. It was shown that molecules of calcium gluconate exist in the form of two conformations: zigzag 1-P and cyclic 3G+. The results of homonuclear 2D 1H NMR spectroscopy indicate the predominantly zigzag conformation. It was found that the intermolecular hydrogen bonds are formed and the spatial structure of molecules changes at the increase in the solution concentration. The observed concentration behavior of the conformation of calcium gluconate is also associated with the presence of the intramolecular hydrogen bonds –O(C4)H··O(C2).
作者简介
M. Akhmetov
Zavoisky Physical-Technical Institute, Russian Academy of Sciences
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G. Konygin
Physical-Technical Institute
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俄罗斯联邦, Ural Branch, Izhevsk
D. Rybin
Physical-Technical Institute
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俄罗斯联邦, Ural Branch, Izhevsk
V. Petukhov
Zavoisky Physical-Technical Institute, Russian Academy of Sciences
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俄罗斯联邦, Kazan
G. Gumarov
Zavoisky Physical-Technical Institute, Russian Academy of Sciences
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俄罗斯联邦, Kazan
A. Konov
Zavoisky Physical-Technical Institute, Russian Academy of Sciences
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俄罗斯联邦, Kazan