sc_MolecularFrequencies3

sc::MolecularFrequencies::MolecularFrequencies (const Ref< KeyVal > &)

The KeyVal constructor.

mole

A MolecularEnergy object. If this is not given then molecule must be given.

molecule

A Molecule object. If this is not given then mole must be given.

point_group

A PointGroup object. This is the point group used to compute the finite displacements. Since some MolecularEnergy objects cannot handle changes in the molecule's point group, the molecule must be given $C_1$ symmetry for frequency calculations. In this case, the point_group keyword can be given to reduce number of the displacements needed to compute the frequencies. If this is not given then the point group of the molecule is used.

debug

An integer which, if nonzero, will cause extra output.

displacement

The amount that coordinates will be displaced. The default is 0.001.

double sc::MolecularFrequencies::freq (int irrep, int i) const [inline]

Returns the frequency, given the irrep and the index. compute_frequencies must be called first.

int sc::MolecularFrequencies::nfreq (int irrep) const [inline]

Returns the number of modes in an irrep. compute_frequencies must be called first.

void sc::MolecularFrequencies::save_data_state (StateOut &) [virtual]

Save the base classes (with save_data_state) and the members in the same order that the StateIn CTOR initializes them. This must be implemented by the derived class if the class has data.

Reimplemented from sc::SavableState.