Index

Core dictionary version 3.0.14

_reflns.Friedel_fraction_max

Definition:

   
     The ratio of Friedel pairs measured to _diffrn_reflns.theta_max
     to the number theoretically possible (ignoring reflections in
     centric projections and systematic absences throughout).
     In contrast to _reflns.Friedel_coverage this can take values in
     the full range 0 to 1 for any non-centrosymmetric space group,
     and so one can see at a glance how completely the Friedel pairs
     have been measured. For centrosymmetric space groups the value
     would be given as not-applicable '.'

Type: Real

Units: none

Category:
reflns