The structure of a recently found hyperhydrated form of sodium chloride (NaCl·13H₂O and NaCl·13D₂O) has been determined by insitu single-crystal neutron diffraction at 1.7 GPa and 298 K. It has large hydrogen-bond networks and some water molecules have distorted bonding features such as bifurcated hydrogen bonds and five-coordinated water molecules. The hydrogen-bond network has similarities to ice VI in terms of network topology and disordered hydrogen bonds. Assuming the equivalence of network components connected by pseudo-symmetries, the overall network structure of this hydrate can be expressed by breaking it down into smaller structural units which correspond to the ice VI network structure. This hydrogen-bond network contains orientational disorder of water molecules in contrast to the known salt hydrates. An example is presented here for further insights into a hydrogen-bond network containing ionic species.

中文翻译：

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十三水氯化钠中的氢键网络：与冰的类比 VI

最近发现的超水合氯化钠（NaCl·13H ₂ O 和 NaCl·13D ₂ O）的结构已通过1.7 GPa 和 298 K 下的原位单晶中子衍射确定。它具有大型氢键网络和一些水分子具有扭曲的键合特征，例如分叉氢键和五配位水分子。氢键网络在网络拓扑和无序氢键方面与冰VI有相似之处。假设通过伪对称连接的网络组件等效，则该水合物的整体网络结构可以通过将其分解为与冰VI网络结构相对应的更小的结构单元来表达。与已知的盐水合物相比，这种氢键网络包含水分子的定向无序。这里提供一个示例，以进一步了解包含离子物质的氢键网络。