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As a result of a theoretical analysis of the possible structure of polymorphic varieties of compounds obtained from the fluorination of L4-8 graphene, the possibility of existence of 6 main structural varieties of CF-L4-8 layers is established (T1-T6 structural types). Ab initio calculations of these layers were performed by the density functional theory method using the generalized gradient approximation. As a result of the calculations, it was established that only five polytypes have a stable structure except for the T3 type layer. The crystal lattices of CF-L4-8 compounds are tetragonal for the T1 - T5 types, and for the T6 type crystal lattice is orthorhombic. The sublimation energies of CF-L4-8 polymorphs of fluorographene vary in the range of 13.36 to 14.09 eV/(CF), which is slightly less than the calculated value of this parameter (14.32 eV/(CF)) for experimentally synthesized CF-L6 fluorographene of T1-type. The maximum band gap, equal to 4.96 eV, is observed for the T2 type layer, and the minimum value (3.05 eV) corresponds to the fluorographene layer of the T3 type.

Simulation of the structure and electronic properties of fluorographene polymorphs formed on the basis of 4-8 graphene