2021年5月26日
Molecular and Crystal Structure of a Chitosan−Zinc Chloride Complex
Nanomaterials
- ,
- ,
- 巻
- 11
- 号
- 6
- 開始ページ
- 1407
- 終了ページ
- 1407
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.3390/nano11061407
- 出版者・発行元
- {MDPI} {AG}
We determined the molecular and packing structure of a chitosan–ZnCl2 complex by X-ray diffraction and linked-atom least-squares. Eight D-glucosamine residues—composed of four chitosan chains with two-fold helical symmetry, and four ZnCl2 molecules—were packed in a rectangular unit cell with dimensions a = 1.1677 nm, b = 1.7991 nm, and c = 1.0307 nm (where c is the fiber axis). We performed exhaustive structure searches by examining all of the possible chain packing modes. We also comprehensively searched the positions and spatial orientations of the ZnCl2 molecules. Chitosan chains of antiparallel polarity formed zigzag-shaped chain sheets, where N2···O6, N2···N2, and O6···O6 intermolecular hydrogen bonds connected the neighboring chains. We further refined the packing positions of the ZnCl2 molecules by theoretical calculations of the crystal models, which suggested a possible coordination scheme of Zn(II) with an O6 atom.
- ID情報
-
- DOI : 10.3390/nano11061407
- eISSN : 2079-4991
- ORCIDのPut Code : 94504816