Data Item _exptl_crystal.F_000

General

Item name
_exptl_crystal.F_000
Category name
exptl_crystal
Attribute name
F_000
Required in PDB entries
no
Used in currrent PDB entries
No

Item Description

The effective number of electrons in the crystal unit cell contributing to F(000). This may contain dispersion contributions and is calculated as F(000) = [ sum (fr2 + fi2) ]1/2 fr = real part of the scattering factors at theta = 0 degree fi = imaginary part of the scattering factors at theta = 0 degree the sum is taken over each atom in the unit cell

Data Type

Data type code
int
Data type detail
int item types are the subset of numbers that are the negative or positive integers.
Primitive data type code
numb
Regular expression
[+-]?[0-9]+

Allowed Boundary Conditions

Minimum Value Maximum Value
1

+∞

Aliases

Alias Item Name Dictionary Name Dictionary Version
_exptl_crystal_F_000 cif_core.dic 2.0.1