Si diamond SW_BalamaneHaliciogluTiller_1992_Si__MO_113686039439_005 5.430949777364731 Optimization terminated successfully. Current function value: -37.040000 Iterations: 75 Function evaluations: 199 C11 = 161.669283 +/- 0.007336 GPa C12 = 81.592857 +/- 0.005187 GPa C44 = 60.268289 +/- 0.001834 GPa B = 108.284999 +/- 0.004235 GPa