A Guide to Mercury


This guide will give you a brief introduction to Mercury. It is quite an intuitive program and easy to use.

 

Topics covered in this guide:

Basic functions, viewing planes, expanding (packing) and slicing structures, and generating a powder pattern.


Basic functions

To zoom in and out of the structure, hold the right mouse button down while moving the mouse. To rotate the structure, hold the left mouse button down while moving the mouse. The style drop down box can be used to change between wireframe, capped sticks, balls and sticks, and spacefill views. To pack the structure into a cell, check the box labelled packing in the display area (bottom left).

 


Viewing planes

To view a specific plane go to calculate > planes. The following box should appear:

 

 


Click on new plane and enter the hkl values for the plane you wish to view.

 

Expanding (packing) and Slicing structures

If you want to see more of the structure than is currently on view or view slices of the structure go to calculate > packing/slicing. Drag the pop up box away from the view of the structure. Increasing the packing boundaries (measured in unit cells) increases the amount of the structure on view. You can manipulate the structure without needing to close the pop up box.

 

 

To slice the structure click new and enter the lattice plane to be cut (using hkl or three atoms that define a plane). Check the show slice box. (the bounds are a bit difficult to see because they are dark (maybe change the background colour)). Using the maximum distance box you can choose the thickness of the slice. Using the displacement box you can choose the position of the centre of the slice.

 


Generate a powder pattern

Go to calculate > powder pattern. You can choose the 2 theta range by clicking the customise button. Placing the cursor over any peak will display an hkl value in the bottom right corner.