obminimize(1) General Commands Manual (urm) obminimize(1)

obminimize — optimize the geometry, minimize the energy for a molecule

obminimize [OPTIONS] filename

The obminimize tool can be used to minimize the energy for molecules inside (multi-)molecule files (e.g., MOL2, etc.)

If no filename is given, obminimize will give all options including the available forcefields.

steps
Specify the maximum number of steps (default=2500)
Use conjugate gradients algorithm (default)
Use steepest descent algorithm
criteria
Set convergence criteria (default=1e-6)
forcefield
Select the forcefield

View the possible options, including available forcefields:

obminimize

Minimize the energy for the molecule(s) in file test.mol2:

obminimize test.mol2

Minimize the energy for the molecule(s) in file test.mol2 using the Ghemical forcefield:

obminimize -ff Ghemical test.mol2

Minimize the energy for the molecule(s) in file test.mol2 by taking at most 300 geometry optimization steps

obminimize -n 300 test.mol2

Minimize the energy for the molecule(s) in file test.mol2 using the steepest descent algorithm and convergence criteria 1e-5:

obminimize -sd -c 1e-5 test.mol2

obabel(1), obenergy(1), obrotamer(1).

The web pages for Open Babel can be found at: http://openbabel.org/

The web pages for Open Babel Molecular Mechanics can be found at: http://openbabel.org/wiki/Molecular_mechanics

The minimize program was contributed by Tim Vandermeersch.

Open Babel is developed by a cast of many, including currrent maintainers Geoff Hutchison, Chris Morley, Michael Banck, and innumerable others who have contributed fixes and additions. For more contributors to Open Babel, see http://openbabel.org/wiki/THANKS

Copyright (C) 2007 by Tim Vandermeersch.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation version 2 of the License.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

October 10, 2019 Open Babel 3.1