Function that generates all adsorption structures for a given
        molecular adsorbate.  Can take repeat argument or minimum
        length/width of precursor slab as an input

        Args:
            molecule (Molecule): molecule corresponding to adsorbate
            repeat (3-tuple or list): repeat argument for supercell generation
            min_lw (float): minimum length and width of the slab, only used
                if repeat is None
            reorient (bool): flag on whether or not to reorient adsorbate
                along the miller index
            find_args (dict): dictionary of arguments to be passed to the
                call to self.find_adsorption_sites, e.g. {"distance":2.0}

def generate_adsorption_structures(self, molecule, repeat=None, min_lw=5.0,
                                       reorient=True, find_args={}):
        """
        Function that generates all adsorption structures for a given
        molecular adsorbate.  Can take repeat argument or minimum
        length/width of precursor slab as an input

        Args:
            molecule (Molecule): molecule corresponding to adsorbate
            repeat (3-tuple or list): repeat argument for supercell generation
            min_lw (float): minimum length and width of the slab, only used
                if repeat is None
            reorient (bool): flag on whether or not to reorient adsorbate
                along the miller index
            find_args (dict): dictionary of arguments to be passed to the
                call to self.find_adsorption_sites, e.g. {"distance":2.0}
        """
        if repeat is None:
            xrep = np.ceil(min_lw / np.linalg.norm(self.slab.lattice.matrix[0]))
            yrep = np.ceil(min_lw / np.linalg.norm(self.slab.lattice.matrix[1]))
            repeat = [xrep, yrep, 1]
        structs = []

        for coords in self.find_adsorption_sites(**find_args)['all']:
            structs.append(self.add_adsorbate(
                molecule, coords, repeat=repeat, reorient=reorient))
        return structs