Quantum chemical calculations are based on optimizing parameters including the basis set in order to obtain the best possible results. Applying the subroutines with analytical derivatives instead of numerical derivatives leads to decrease the number of iteration steps through the direct optimizing process. All the components of the first and second derivatives with respect to all parameters can be derived analytically and programmed. Evaluation of the correct structure for molecules is the main goals of the computational chemistry coding to introduce new methods. The correct description of...