Electron diffraction study of intercalation compounds derived from 1T-MoS2

The structure of the intercalation compound K0.7MoS2as well as of its hydrated (K0.3(H2O)yMoS2) and oxidation (1T-MoS2) derivatives were studied by means of selected area electron diffraction (SAED). All the derivatives are shown to have superstructures related to the structure of 2H-MoS2. The intercalation compound K0.7MoS2has a 2a×2a-type superstructure (a=lattice parameter of 2H-MoS2), whereas the superstructure of the hydrated derivative (K0.3(H2O)yMoS2) corresponds roughly to ana×a-type. Three domains are present in different orientations, each of which can be related to each other by angles of 60° or 120°. 1T-MoS2has an hexagonala×a-type superstructur