Manual Forces
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This group of input dialogs is for locating sets of bonds using individual generated atoms rather than overall specifications based on type (atomic number) and length limits. For "automatic" bond specification of the latter type, see Bond Force List. This type of bond is not applicable to crystals or polymers.

Using this type of forces when entering a new structure can be done graphically as follows:

1) Use the File/New or Import options to enter data up to the point of entering forces, but do not enter forces.

2) Click on the Calculate button. If there are no bond and angle forces specified a full calculation will not be carried out - the calculation will be to locate atoms and do a symmetry analysis only. If the Atoms plot box in the Control Window is checked, a drawing with atoms, but without bonds, will appear. You can click on atoms successively to specify manual bonds and angle, or you can use the type numbers of the atoms to enter the information in the Manual Forces dialogs. To see the generated atom numbers in the plot, go to the Atoms Plot Parameters dialog (Params button in the dialog bar of the Atoms window, or in the Settings menu) and select Numbers in the Labels group.