9.5 Displaying Bravais, Friedel, Donnay and Harker (BFDH) Crystal Morphology Display Options

The ability to display Bravais, Friedel, Donnay and Harker (BFDH) theoretical crystal morphologies is only available to registered CSD System subscribers. For further information on obtaining the CSD System, please see http://www.ccdc.cam.ac.uk/contact/obtaining_products/.

Hit Calculate in the top-level menu, then BFDH Morphology... in the resulting pull-down menu.

The crystal morphology, calculated from the unit cell, will be displayed:

The BFDH Morphology control window can be used to customise the settings.

Please note that the Apply button will need to be clicked on for changes to be made to the display, and that changes made to these settings are not saved between Mercury sessions.

Scale factor: use this to alter the size of the morphology with respect to the unit cell.

Show (hkl) labels: switch the check box on or off to enable or disable the labelling of the facet edges.

Draw faces: switch the check box on or off to view or hide coloured facet faces. The Colour button can be used to alter the colour or the faces.

Shadows: switch the tick box on or off to view or hide shadows on the facet faces.

Transparency: use this to alter the transparency/opaqueness of the facet faces.

Draw edges: switch the tick box on or off to view or hide the facet edges. The colour of the facet edges can be controlled using the Colour button.

Save: this button allows data relating to the BFDH cell to be saved in CIF format. The file name will be of the format <identifier>-Morphology.cif, where <identifier> is the name, stored in the data_<identifier> line of the CIF.

BFDH morphology will be displayed for all structures while the BFDH Morphology window is open. To exit from BFDH morphology display, click either OK or Cancel in the BFDH Morphology window. BFDH morphology will continue to be displayed for the present crystal structure until a new file is loaded, or an alternative structure is loaded.