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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_aniso.symmform
Name:_atom_site_aniso.symmform
Alias:
_atom_site_aniso_symmform
Definition:
A symbolic expression that indicates the symmetry-restricted form of the
components of the anisotropic displacement parameters of an atom, where the
tensor components are ordered as A11, A22, A33, A23, A13, A12.
Examples:| A11,A22,A33,A23,A13,A12 | No symmetry restrictions. |
| A11,A11,A11 | Diagonal terms equal, zeros off-diagonal. |
| A11,A22,A33,0,0,0 | Diagonal terms distinct, zeros off-diagonal. |
Type: Text
Category:
atom_site_aniso
