Rb sc Morse_Shifted_GirifalcoWeizer_1959MedCutoff_Rb__MO_147245690895_002 4.5557166934 Optimization terminated successfully. Current function value: -0.785190 Iterations: 70 Function evaluations: 182 C11 = 7.101358 +/- 0.007336 GPa C12 = -0.870129 +/- 0.005187 GPa C44 = -0.870102 +/- 0.001834 GPa B = 1.787033 +/- 0.004235 GPa