On the capabilities of the x-ray diffraction method in determining polytypes in nanostructured layered metal disulfides

By the example of multilayer MoS₂ nanotubes the capabilities of the X-ray diffraction method in determining possible polytypic forms of layered metal dichalcogenides, which may appear due to the nanostructuring of these compounds, are discussed. The conclusion about a low information value of the X-ray diffraction method is drawn, therefore the experimental analysis of the polytypic composition of nanostructures of metal dichalcogenides needs to attract electron microscopy and electronoй tomography methods.