optimize

psi4.driver.optimize(name, **kwargs)[source]

Function to perform a geometry optimization.

Aliases:opt()
Returns:float – Total electronic energy of optimized structure in Hartrees.
Returns:(float, Wavefunction) – energy and wavefunction when return_wfn specified.
Raises:psi4.OptimizationConvergenceError if |optking__geom_maxiter| exceeded without reaching geometry convergence.
PSI variables:
Parameters:
  • name (string) –

    'scf' || 'mp2' || 'ci5' || etc.

    First argument, usually unlabeled. Indicates the computational method to be applied to the database. May be any valid argument to energy().

  • molecule (molecule) –

    h2o || etc.

    The target molecule, if not the last molecule defined.

  • return_wfn (boolean) –

    'on' || \(\Rightarrow\) 'off' \(\Leftarrow\)

    Indicate to additionally return the Wavefunction calculation result as the second element (after float energy) of a tuple.

  • return_history (boolean) –

    'on' || \(\Rightarrow\) 'off' \(\Leftarrow\)

    Indicate to additionally return dictionary of lists of geometries, energies, and gradients at each step in the optimization.

  • func (function) –

    \(\Rightarrow\) gradient \(\Leftarrow\) || energy || cbs

    Indicates the type of calculation to be performed on the molecule. The default dertype accesses 'gradient' or 'energy', while 'cbs' performs a multistage finite difference calculation. If a nested series of python functions is intended (see Function Intercalls), use keyword opt_func instead of func.

  • dertype (dertype) –

    'gradient' || 'energy'

    Indicates whether analytic (if available) or finite difference optimization is to be performed.

  • hessian_with (string) –

    'scf' || 'mp2' || etc.

    Indicates the computational method with which to perform a hessian analysis to guide the geometry optimization.

Warning

Optimizations where the molecule is specified in Z-matrix format with dummy atoms will result in the geometry being converted to a Cartesian representation.

Note

Analytic gradients area available for all methods in the table below. Optimizations with other methods in the energy table proceed by finite differences.

name calls method
efp efp-only optimizations
scf Hartree–Fock (HF) or density functional theory (DFT) [manual]
hf HF self consistent field (SCF) [manual]
dcft density cumulant functional theory [manual]
mp2 2nd-order Møller–Plesset perturbation theory (MP2) [manual] [details]
mp3 3rd-order Møller–Plesset perturbation theory (MP3) [manual] [details]
mp2.5 average of MP2 and MP3 [manual] [details]
omp2 orbital-optimized second-order MP perturbation theory [manual]
omp3 orbital-optimized third-order MP perturbation theory [manual]
omp2.5 orbital-optimized MP2.5 [manual]
lccd Linear CCD [manual] [details]
olccd orbital optimized LCCD [manual]
ccd coupled cluster doubles (CCD) [manual]
ccsd coupled cluster singles and doubles (CCSD) [manual] [details]
ccsd(t) CCSD with perturbative triples (CCSD(T)) [manual] [details]
eom-ccsd equation of motion (EOM) CCSD [manual]
name calls method DFT [manual]
b1lyp B1LYP Hyb-GGA Exchange-Correlation Functional
b1lyp-d3bj  
b1pw91 B1PW91 Hyb-GGA Exchange-Correlation Functional
b1wc B1WC Hyb-GGA Exchange-Correlation Functional
b3lyp B3LYP Hyb-GGA Exchange-Correlation Functional
b3lyp-d3bj  
b3lyp-d3mbj  
b3lyp-nl B3LYP-nl Hyb-GGA Exchange-Correlation Functional
b3lyp5 B3LYP5 Hyb-GGA Exchange-Correlation Functional
b3lyps B3LYPs Hyb-GGA Exchange-Correlation Functional
b3p86 B3P86 Hyb-GGA Exchange-Correlation Functional
b3p86-d3bj  
b3pw91 B3PW91 Hyb-GGA Exchange-Correlation Functional
b3pw91-d3bj  
b3pw91-nl B3PW91-nl Hyb-GGA Exchange-Correlation Functional
b5050lyp B5050LYP Hyb-GGA Exchange-Correlation Functional
b86b95 B86B95 Hyb-GGA Exchange-Correlation Functional
b86bpbe B86BPBE GGA Exchange-Correlation Functional
b88b95 B88B95 Hyb-GGA Exchange-Correlation Functional
b88b95-d3bj  
b97-0 B97-0 Hyb-GGA Exchange-Correlation Functional
b97-1 B97-1 Hyb-GGA Exchange-Correlation Functional
b97-1-d3bj  
b97-1p B97-1p Hyb-GGA Exchange-Correlation Functional
b97-2 B97-2 Hyb-GGA Exchange-Correlation Functional
b97-2-d3bj  
b97-3 B97-3 Hyb-GGA Exchange-Correlation Functional
b97-d  
b97-d3bj  
b97-d3mbj  
b97-gga1 B97-GGA1 GGA Exchange-Correlation Functional
b97-k B97-K Hyb-GGA Exchange-Correlation Functional
b97m-d3bj  
b97m-v B97M-V GGA Exchange-Correlation Functional
bb1k BB1K Hyb-GGA Exchange-Correlation Functional
bhandh BHandH Hyb-GGA Exchange-Correlation Functional
bhandhlyp BHandHLYP Hyb-GGA Exchange-Correlation Functional
blyp BLYP GGA Exchange-Correlation Functional
blyp-d3bj  
blyp-d3mbj  
blyp-nl BLYP GGA Exchange-Correlation Functional
bop BOP GGA Exchange-Correlation Functional
bop-d3bj  
bp86 BP86 GGA Exchange-Correlation Functional
bp86-d3bj  
bp86-d3mbj  
bp86-nl BP86 GGA Exchange-Correlation Functional
cap0 CAP0 Hyb-GGA Exchange-Correlation Functional
dldf Dispersionless Hybrid Meta-GGA XC Functional
dldf+d09 Dispersionless Hybrid Meta-GGA XC Functional
dldf+d10 Dispersionless Hybrid Meta-GGA XC Functional
edf1 EDF1 GGA Exchange-Correlation Functional
edf2 EDF2 Hyb-GGA Exchange-Correlation Functional
ft97 FT97 GGA Exchange-Correlation Functional
gam GAM GGA Minessota Exchange-Correlation Functional
hcth120 HCTH120 GGA Exchange-Correlation Functional
hcth120-d3bj  
hcth147 HCTH147 GGA Exchange-Correlation Functional
hcth407 HCTH407 GGA Exchange-Correlation Functional
hcth407-d3bj  
hcth407p HCTH407P GGA Exchange-Correlation Functional
hcth93 HCTH93 GGA Exchange-Correlation Functional
hcthp14 HCTHP14 GGA Exchange-Correlation Functional
hcthp76 HCTHP76 GGA Exchange-Correlation Functional
hf  
hf+d  
hf-d3bj  
hf-nl  
hf3c Hartree Fock based 3C composite method with minimal basis set, gCP and D3(BJ)
hpbeint HPBEINT Hyb-GGA Exchange-Correlation Functional
ksdt KSDT Exchange-Correlation Functional
kt2 KT2 GGA Exchange-Correlation Functional
m05 M05 Meta-GGA XC Functional
m05-2x Heavily Parameterized Hybrid M05-2X Meta-GGA XC Functional
m06 M06 Meta-GGA XC Functional
m06-2x Hybrid M06-2X Meta-GGA XC Functional
m06-hf Minnesota M06-HF Hybrid XC Functional
m06-l M06-L Meta-GGA XC Functional
m08-hx Minnesota M08-HX Hybrid XC Functional
m08-so Minnesota M08-SO Hybrid XC Functional
m11-l M11-L Meta-GGA XC Functional
m11-l-d3bj  
mb3lyp-rc04 MB3LYP-RC04 Hyb-GGA Exchange-Correlation Functional
mgga_ms0 MGGA_MS0 Meta-GGA XC Functional
mgga_ms1 MGGA_MS1 Meta-GGA XC Functional
mgga_ms2 MGGA_MS2 Meta-GGA XC Functional
mgga_ms2h MGGA_MS2h Hybrid Meta-GGA XC Functional
mgga_mvs MGGA_MVS Meta-GGA XC Functional
mgga_mvsh MGGA_MV2h Hybrid Meta-GGA XC Functional
mn12-l MN12-L Meta-GGA XC Functional
mn12-l-d3bj  
mn15 MN15 Hybrid Meta-GGA Exchange-Correlation Functional
mn15-d3bj  
mn15-l MN15-L Meta-GGA XC Functional
mohlyp MOHLYP GGA Exchange-Correlation Functional
mohlyp2 MOHLYP2 GGA Exchange-Correlation Functional
mpw1b95 mPW1B95 Hyb-GGA Exchange-Correlation Functional
mpw1b95-d3bj  
mpw1k mPW1K Hyb-GGA Exchange-Correlation Functional
mpw1lyp mPW1LYP Hybrid GGA Exchange-Correlation Functional
mpw1pbe mPW1PBE Hybrid GGA Exchange-Correlation Functional
mpw1pw mPW1PW Hyb-GGA Exchange-Correlation Functional
mpw1pw-d3bj  
mpw3lyp mPW3LYP Hyb-GGA Exchange-Correlation Functional
mpw3pw mPW3PW Hyb-GGA Exchange-Correlation Functional
mpwb1k mPWB1K Hyb-GGA Exchange-Correlation Functional
mpwb1k-d3bj  
mpwlyp1m mPWLYP1M Hyb-GGA Exchange-Correlation Functional
mpwlyp1w mPWLYP1W GGA Exchange-Correlation Functional
mpwpw mPWPW GGA Exchange-Correlation Functional
n12 N12 nonseparable GGA Exchange-Correlation Functional
n12-d3bj  
o3lyp O3LYP Hyb-GGA Exchange-Correlation Functional
o3lyp-d3bj  
oblyp-d  
op-pbe BP86 GGA Exchange-Correlation Functional
opbe-d  
opwlyp-d  
otpss-d  
pbe PBE GGA Exchange-Correlation Functional
pbe-d3bj  
pbe-d3mbj  
pbe-nl PBE GGA Exchange-Correlation Functional
pbe0 PBE0 Hyb-GGA Exchange-Correlation Functional
pbe0-13 PBE0-13 Hyb-GGA Exchange-Correlation Functional
pbe0-d3bj  
pbe0-d3mbj  
pbe0-nl PBE0-nl Hyb-GGA Exchange-Correlation Functional
pbe1w PBE1W GGA Exchange-Correlation Functional
pbe50 PBE50 Hybrid GGA Exchange-Correlation Functional
pbeh3c PBE Hybrid based 3C composite method with a small basis set, gCP and D3(BJ)
pbelyp1w PBELYP1W GGA Exchange-Correlation Functional
pkzb PKZB Meta-GGA XC Functional
pw6b95 PW6B95 Hybrid Meta-GGA XC Functional
pw6b95-d3bj  
pw86b95 PW86B95 Hyb-GGA Exchange-Correlation Functional
pw86pbe PW86PBE GGA Exchange-Correlation Functional
pw91 PW91 GGA Exchange-Correlation Functional
pw91-d3bj  
pwb6k PWB6K Hyb-GGA Exchange-Correlation Functional
pwb6k-d3bj  
revb3lyp revB3LYP Hyb-GGA Exchange-Correlation Functional
revpbe revPBE GGA Exchange-Correlation Functional
revpbe-d3bj  
revpbe-nl revPBE GGA Exchange-Correlation Functional
revpbe0 revPBE0 Hybrid GGA Exchange-Correlation Functional
revpbe0-d3bj  
revpbe0-nl revPBE0 Hybrid GGA Exchange-Correlation Functional
revtpss revised TPSS Meta-GGA XC Functional
revtpss-d3bj  
revtpss-nl revised TPSS Meta-GGA XC Functional
revtpssh revTPSSh Hyb-GGA Exchange-Correlation Functional
revtpssh-d3bj  
rpbe RPBE GGA Exchange-Correlation Functional
rpbe-d3bj  
sb98-1a SB98-1a Hyb-GGA Exchange-Correlation Functional
sb98-1b SB98-1b Hyb-GGA Exchange-Correlation Functional
sb98-1c SB98-1c Hyb-GGA Exchange-Correlation Functional
sb98-2a SB98-2a Hyb-GGA Exchange-Correlation Functional
sb98-2b SB98-2b Hyb-GGA Exchange-Correlation Functional
sb98-2c SB98-2c Hyb-GGA Exchange-Correlation Functional
sogga SOGGA Exchange + PBE Correlation Functional
sogga11 SOGGA11 Exchange-Correlation Functional
sogga11-x SOGGA11-X Hybrid Exchange-Correlation Functional
sogga11-x-d3bj  
svwn SVWN3 (RPA) LSDA Functional
teter93 TETER93 Exchange-Correlation Functional
th-fc TH-FC GGA Exchange-Correlation Functional
th-fcfo TH-FCFO GGA Exchange-Correlation Functional
th-fco TH-FCO GGA Exchange-Correlation Functional
th-fl TH-FL GGA Exchange-Correlation Functional
th1 TH1 GGA Exchange-Correlation Functional
th2 TH2 GGA Exchange-Correlation Functional
th3 TH3 GGA Exchange-Correlation Functional
th4 TH4 GGA Exchange-Correlation Functional
tpss TPSS Meta-GGA XC Functional
tpss-d3bj  
tpss-nl TPSS Meta-GGA XC Functional
tpssh TPSSh Hyb-GGA Exchange-Correlation Functional
tpssh-d3bj  
tpssh-nl TPSSh-nl Hyb-GGA Exchange-Correlation Functional
tpsslyp1w TPSSLYP1W GGA Exchange-Correlation Functional
vsxc VSXC Meta-GGA XC Functional
vv10 VV10 GGA Exchange-Correlation Functional
x1b95 X1B95 Hyb-GGA Exchange-Correlation Functional
x3lyp X3LYP Hyb-GGA Exchange-Correlation Functional
x3lyp-d3bj  
xb1k XB1K Hyb-GGA Exchange-Correlation Functional
xlyp XLYP GGA Exchange-Correlation Functional
xlyp-d3bj  
zlp ZLP GGA Exchange-Correlation Functional
name calls method in Stanton and Gauss’s CFOUR program [manual]
c4-scf Hartree–Fock (HF)
c4-mp2 2nd-order Møller–Plesset perturbation theory (non-density-fitting) (MP2)
c4-mp3 3rd-order Møller–Plesset perturbation theory (MP3)
c4-mp4(sdq) 4th-order MP perturbation theory (MP4) less triples
c4-mp4 full MP4
c4-cc2 approximate coupled cluster singles and doubles (CC2)
c4-ccsd coupled cluster singles and doubles (CCSD)
c4-cc3 approximate CC singles, doubles, and triples (CC3)
c4-ccsd(t) CCSD with perturbative triples (CCSD(T))
c4-ccsdt coupled cluster singles, doubles, and triples (CCSDT)
cfour expert full control over cfour program
Examples:
>>> # [1] Analytic hf optimization
>>> optimize('hf')
>>> # [2] Finite difference mp5 optimization with gradient
>>> #     printed to output file
>>> e, wfn = opt('mp5', return_wfn='yes')
>>> wfn.gradient().print_out()
>>> # [3] Can automatically perform complete basis set extrapolations
>>> optimize('MP2/cc-pV([D,T]+d)Z')
>>> # [4] Can automatically perform delta corrections that include extrapolations
>>> # even with a user-defined extrapolation formula. See sample inputs named
>>> # cbs-xtpl* for more examples of this input style
>>> optimize("MP2/aug-cc-pv([d,t]+d)z + d:ccsd(t)/cc-pvdz", corl_scheme=myxtplfn_2)
>>> # [5] Get info like geometry, gradient, energy back after an
>>> #     optimization fails. Note that the energy and gradient
>>> #     correspond to the last optimization cycle, whereas the
>>> #     geometry (by default) is the anticipated *next* optimization step.
>>> try:
>>>     optimize('hf/cc-pvtz')
>>> except psi4.OptimizationConvergenceError as ex:
>>>     next_geom_coords_as_numpy_array = np.asarray(ex.wfn.molecule().geometry())