H fcc Sim_LAMMPS_ReaxFF_StrachanVanDuinChakraborty_2003_CHNO__SM_107643900657_001 2.368977218866348 Optimization terminated successfully. Current function value: -0.855747 Iterations: 87 Function evaluations: 232 C11 = 1227.147444 +/- 0.007336 GPa C12 = 1369.099051 +/- 0.005187 GPa C44 = -155.587979 +/- 0.001834 GPa B = 1321.781849 +/- 0.004235 GPa