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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.

-n steps
Specify the maximum number of steps
-ff forcefield
Select the forcefield


View the possible options, including available forcefields:


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

See Also

babel, obenergy.

The web pages for Open Babel Molecular Mechanics can be found at: <http://openbabel.sourceforge.net/wiki/Molecular_mechanics>


The obminimize 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 the Contributor list


Copyright (C) 2007 Tim andermeersch.

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

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.