Force constants for  x_trans
Analytic_derivative == 0.018960310761731762 Hartree/Ang^2
Numeric_derivative == 0.018634724839594604 Hartree/Ang^2

Force constants for  y_trans
Analytic_derivative == 0.009231205575136386 Hartree/Ang^2
Numeric_derivative == 0.007623296525288702 Hartree/Ang^2

Force constants for  z_trans
Analytic_derivative == 0.013665928861826174 Hartree/Ang^2
Numeric_derivative == 0.019693516335370604 Hartree/Ang^2

Force constant for y_theta
Analytic_derivative == 0.032352748 Hartee/Degree^2

Force constant for z_phi
Analytic derivative == 0.007038849 Hartee/Degree^2