然后计算时候会在一开始做一次hess
当这个计算最终未收敛的 时候,比如报如下错误
ERROR !!!
The optimization did not converge but reached the maximum
number of optimization cycles.
As a subsequent Frequencies calculation has been requested
ORCA will abort at this point of the run.
Please restart the calculation with the lowest energy geometry and/or
a larger maxiter for the geometry optimization.