# coding: utf-8
# Copyright (c) Pymatgen Development Team.
# Distributed under the terms of the MIT License.
import logging
from pymatgen.core import Molecule
from pymatgen.io.qchem_io.inputs import QCInput
from pymatgen.io.qchem_io.utils import lower_and_check_unique
# Classes for reading/manipulating/writing QChem ouput files.
__author__ = "Samuel Blau, Brandon Wood, Shyam Dwaraknath"
__copyright__ = "Copyright 2018, The Materials Project"
__version__ = "0.1"
logger = logging.getLogger(__name__)
[docs]class QChemDictSet(QCInput):
"""
Build a QCInput given all the various input parameters. Can be extended by standard implementations below.
"""
def __init__(self,
molecule,
job_type,
basis_set,
scf_algorithm,
dft_rung=4,
pcm_dielectric=None,
max_scf_cycles=200,
geom_opt_max_cycles=200,
overwrite_inputs=None):
"""
Args:
molecule (Pymatgen molecule object)
job_type (str)
basis_set (str)
scf_algorithm (str)
dft_rung (int)
pcm_dielectric (str)
max_scf_cycles (int)
geom_opt_max_cycles (int)
overwrite_inputs (dict): This is dictionary of QChem input sections to add or overwrite variables,
the available sections are currently rem, pcm, and solvent. So the accepted keys are rem, pcm, or solvent
and the value is a dictionary of key value pairs relevant to the section. An example would be adding a
new variable to the rem section that sets symmetry to false.
ex. overwrite_inputs = {"rem": {"symmetry": "false"}}
***It should be noted that if something like basis is added to the rem dict it will overwrite
the default basis.***
"""
self.molecule = molecule
self.job_type = job_type
self.basis_set = basis_set
self.scf_algorithm = scf_algorithm
self.dft_rung = dft_rung
self.pcm_dielectric = pcm_dielectric
self.max_scf_cycles = max_scf_cycles
self.geom_opt_max_cycles = geom_opt_max_cycles
self.overwrite_inputs = overwrite_inputs
pcm_defaults = {
"heavypoints": "194",
"hpoints": "194",
"radii": "uff",
"theory": "cpcm",
"vdwscale": "1.1"
}
mypcm = {}
mysolvent = {}
myrem = {}
myrem["job_type"] = job_type
myrem["basis"] = self.basis_set
myrem["max_scf_cycles"] = self.max_scf_cycles
myrem["gen_scfman"] = "true"
myrem["scf_algorithm"] = self.scf_algorithm
if self.dft_rung == 1:
myrem["exchange"] = "B3LYP"
elif self.dft_rung == 2:
myrem["method"] = "B97-D3"
myrem["dft_D"] = "D3_BJ"
elif self.dft_rung == 3:
myrem["method"] = "B97M-rV"
elif self.dft_rung == 4:
myrem["method"] = "wb97xd"
elif self.dft_rung == 5:
myrem["method"] = "wB97M-V"
else:
raise ValueError("dft_rung should be between 1 and 5!")
if self.job_type.lower() == "opt":
myrem["geom_opt_max_cycles"] = self.geom_opt_max_cycles
if self.pcm_dielectric != None:
mypcm = pcm_defaults
mysolvent["dielectric"] = self.pcm_dielectric
myrem["solvent_method"] = 'pcm'
if self.overwrite_inputs:
for sec, sec_dict in self.overwrite_inputs.items():
if sec == "rem":
temp_rem = lower_and_check_unique(sec_dict)
for k, v in temp_rem.items():
myrem[k] = v
if sec == "pcm":
temp_pcm = lower_and_check_unique(sec_dict)
for k, v in temp_pcm.items():
mypcm[k] = v
if sec == "solvent":
temp_solvent = lower_and_check_unique(sec_dict)
for k, v in temp_solvent.items():
mysolvent[k] = v
super(QChemDictSet, self).__init__(
self.molecule, rem=myrem, pcm=mypcm, solvent=mysolvent)
[docs]class OptSet(QChemDictSet):
"""
QChemDictSet for a geometry optimization
"""
def __init__(self,
molecule,
dft_rung=4,
basis_set="6-311++G*",
pcm_dielectric=None,
scf_algorithm="diis",
max_scf_cycles=200,
geom_opt_max_cycles=200,
overwrite_inputs=None):
self.basis_set = basis_set
self.scf_algorithm = scf_algorithm
self.max_scf_cycles = max_scf_cycles
self.geom_opt_max_cycles = geom_opt_max_cycles
super(OptSet, self).__init__(
molecule=molecule,
job_type="opt",
dft_rung=dft_rung,
pcm_dielectric=pcm_dielectric,
basis_set=self.basis_set,
scf_algorithm=self.scf_algorithm,
max_scf_cycles=self.max_scf_cycles,
geom_opt_max_cycles=self.geom_opt_max_cycles,
overwrite_inputs=overwrite_inputs)
[docs]class SinglePointSet(QChemDictSet):
"""
QChemDictSet for a single point calculation
"""
def __init__(self,
molecule,
dft_rung=4,
basis_set="6-311++G*",
pcm_dielectric=None,
scf_algorithm="diis",
max_scf_cycles=200,
overwrite_inputs=None):
self.basis_set = basis_set
self.scf_algorithm = scf_algorithm
self.max_scf_cycles = max_scf_cycles
super(SinglePointSet, self).__init__(
molecule=molecule,
job_type="sp",
dft_rung=dft_rung,
pcm_dielectric=pcm_dielectric,
basis_set=self.basis_set,
scf_algorithm=self.scf_algorithm,
max_scf_cycles=self.max_scf_cycles,
overwrite_inputs=overwrite_inputs)
[docs]class FreqSet(QChemDictSet):
"""
QChemDictSet for a single point calculation
"""
def __init__(self,
molecule,
dft_rung=4,
basis_set="6-311++G*",
pcm_dielectric=None,
scf_algorithm="diis",
max_scf_cycles=200,
overwrite_inputs=None):
self.basis_set = basis_set
self.scf_algorithm = scf_algorithm
self.max_scf_cycles = max_scf_cycles
super(FreqSet, self).__init__(
molecule=molecule,
job_type="freq",
dft_rung=dft_rung,
pcm_dielectric=pcm_dielectric,
basis_set=self.basis_set,
scf_algorithm=self.scf_algorithm,
max_scf_cycles=self.max_scf_cycles,
overwrite_inputs=overwrite_inputs)