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Article ID: 5 - Last Modified: September 3, 2014

If, after a Jaguar QM calculation, I realign the molecule using the Maestro superimpose tools to bring the orientation of the molecule in line with a reference compound, the dipole moment doesn't move with the molecule and so the dipole moment is no longer correct for the displayed structure. Is there a workaround for this (other than aligning molecules before doing the QM calculation)?

From Maestro 9.0, the dipole translates correctly with the molecule, but doesn't rotate to match the new orientation.

At the moment, the only option is to prealign the molecules before performing the QM calculation. Keep in mind that if you don't want Jaguar to move the structure during calculations and want to keep the original "aligned" orientation you need to turn off Symmetry in the Jaguar panel, Input tab (Molecule tab prior to the 2014-2 release) if you are working with symmetrical molecules. This should not be a problem if you have asymmetrical drug-like molecules.

Note that turning off the symmetry can potentially increase calculation time significantly, particularly for large symmetric molecules.

Keywords: Maestro, dipole, Jaguar, QM

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