Solid-state NMR has been used to study the local coordination environments of the protons and alkali metal cations in hydrated alkali metal intercalation compounds of MoS2, Ax(H2O)yMoS2 (A = Li, Na, K, Cs). The dynamic behavior of the water molecules, which are coordinated to the intercalated A+ cations, is consistent with an ordered quasi two-dimensional translational motion at room temperature. In Lix(H2O)yMoS2, the hydrated Li+ cations occupy two distinct sites in the van der Waals gap that are connected by dynamic processes. Partially random motions of the H2O molecules are activated at room temperature.
Alexiev, V., Meyer zu Altenschildesche, H., Prins, R., & Weber, T. (1999). Solid state NMR study of hydrated intercalation compounds of Molybdenum Disulfide. Chemistry of Materials, 11(7), 1742-1746. https://doi.org/10.1021/cm980780z