Data Item _cell.volume
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General 
- Item name
- _cell.volume
- Category name
- cell
- Attribute name
- volume
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 1.4 % of entries
Item Description
Cell volume V in angstroms cubed.
V = a b c (1 - cos2alpha - cos2beta - cos2gamma
+ 2 cosalpha cosbeta cosgamma)1/2
a = _cell.length_a
b = _cell.length_b
c = _cell.length_c
alpha = _cell.angle_alpha
beta = _cell.angle_beta
gamma = _cell.angle_gamma
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_cubed
Allowed Boundary Conditions
| Minimum Value | Maximum Value |
|---|---|
| 0.0 | +∞ |
Related Items 
| Related Item Name | Relation Type |
|---|---|
| _cell.volume_esd | associated_esd |
Aliases
| Alias Item Name | Dictionary Name | Dictionary Version |
|---|---|---|
| _cell_volume | cif_core.dic | 2.0.1 |