English: The insets a) and b) show two examples of crystal phases of monolayer molybdenum disulfide. The c) and d) inset shows a schematic top view on the 1H and 1T phase of MoS2, respectively. The 1H ground state structure has prismatic coordination of sulfur atoms around the transition metal atom and the upper layer lattices of the chalcogenide atoms match with the lower one. The metastable 1T phase shows octahedral coordination of the metal bonds with the upper layer of sulfur atoms rotated by 30 degrees with respect to the lower ones.