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Core CIF Dictionary version 2.3



'_refine_diff_density_max' '_refine_diff_density_min' '_refine_diff_density_rms'

Category: refine

Data type: numb (with optional s.u. in parentheses)

Units: e_A^-3^ ( electrons per cubic angstrom)


   The largest, smallest and root-mean-square-deviation, in
   electrons per angstrom cubed, of the final difference electron
   density. The *_rms value is measured with
   respect to the arithmetic mean density, and is derived from
   summations over each grid point in the asymmetric unit of
   the cell. This quantity is useful for assessing the
   significance of *_min and *_max values, and also for
   defining suitable contour levels.

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