In this paper, the optimized geometries and frequencies of the stationary point and the minimum-energy pathsof C3H2F4Br2are calculated by using the DFT (B3LYP) methods with LANL2DZbasis sets. B3LYP/LANL2DZcalculation results indicated that some selected bond length and bond angles values for the C3H2F4Br2.