Data Item _atom_site.U_equiv_geom_mean

General

Item name
_atom_site.U_equiv_geom_mean
Category name
atom_site
Attribute name
U_equiv_geom_mean
Required in PDB entries
no
Used in currrent PDB entries
No

Item Description

Equivalent isotropic atomic displacement parameter, Ueq, in angstroms squared, calculated as the geometric mean of the anisotropic atomic displacement parameters. Ueq = (Ui Uj Uk)1/3 Un = the principal components of the orthogonalized Uij

Data Type

Data type code
float
Data type detail
float item types are the subset of numbers that are the floating numbers.
Primitive data type code
numb
Regular expression
-?(([0-9]+)[.]?|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?
Units
angstroms_squared

Allowed Boundary Conditions

Minimum Value Maximum Value
0.0 10.0

Aliases

Alias Item Name Dictionary Name Dictionary Version
_atom_site_U_equiv_geom_mean cif_core.dic 2.0.1