Revise Atom, Vector Tab
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Dialog Box - called from: Input Atoms Dialog

See the Basic Tab for most normal aspect of individual input atoms, the Temperature Factor Tab for modification or entry of temperature factors, and the Central Distance and Slice Offset tabs for adjusting boundaries for individual atoms.

Atom vectors, for magnetic spin direction or atomic displacements in vibrational modes, are specified in the crystal or structure coordinate system. The length is specified independently from the vector giving the orientation.

Vectors are drawn by adding pseudo-atoms to the list of generated atoms, and adding pseudo-bonds between these pseudo-atoms and the real atom to which the vector is attached. Thus if the length or orientation are changed the structure must be recalculated, rather than just replotted. Also, since the length is computed as the visible cylindrical part of the vector, if you change atomic radii the vector lengths will change unless the structure is recalculated.