Si diamond SW_ZhangXieHu_2014OptimizedSW2_Si__MO_475612090600_005 5.177976071834564 Optimization terminated successfully. Current function value: -28.711016 Iterations: 73 Function evaluations: 194 C11 = 158.046701 +/- 0.007336 GPa C12 = 66.249653 +/- 0.005187 GPa C44 = 64.588449 +/- 0.001834 GPa B = 96.848669 +/- 0.004235 GPa