|
International
Tables for Crystallography Volume G Definition and exchange of crystallographic data Edited by J. R. Hester and B. McMahon © International Union of Crystallography 2026 |
International Tables for Crystallography (2026). Vol. G. Early view chapter
https://doi.org/10.1107/97809553602060001011 Chapter 4.2 Core dictionary (coreCIF) |
Core dictionary version 3.3.0
_atom_site.refinement_flags_posn
Name:_atom_site.refinement_flags_posn
Alias:
_atom_site_refinement_flags_posn
Definition:
A code which indicates the refinement restraints or constraints
applied to the positional coordinates of this site.
Type: Text
The data value must be one of the following:
|
. | No constraints on positional coordinates. |
|
D | Distance or angle restraint on positional coordinates. |
|
G | Rigid-group refinement of positional coordinates. |
|
R | Riding-atom site attached to non-riding atom. |
|
S | Special-position constraint on positional coordinates. |
|
DG | Combination of the above constraints. |
|
DR | Combination of the above constraints. |
|
DS | Combination of the above constraints. |
|
GR | Combination of the above constraints. |
|
GS | Combination of the above constraints. |
|
RS | Combination of the above constraints. |
|
DGR | Combination of the above constraints. |
|
DGS | Combination of the above constraints. |
|
DRS | Combination of the above constraints. |
|
GRS | Combination of the above constraints. |
|
DGRS | Combination of the above constraints. |
Category:
atom_site
