Si sc SNAP_ZuoChenLi_2019quadratic_Si__MO_721469752060_000 2.644055940210819 Optimization terminated successfully. Current function value: -5.146038 Iterations: 69 Function evaluations: 182 C11 = 349.125806 +/- 0.007336 GPa C12 = 154.751611 +/- 0.005187 GPa C44 = 42.174988 +/- 0.001834 GPa B = 219.543010 +/- 0.004235 GPa