Data Item _valence_param.B
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General 
- Item name
- _valence_param.B
- Category name
- valence_param
- Attribute name
- B
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
Item Description
The bond-valence parameter B used in the expression
s = exp[(Ro - R)/B]
where s is the valence of a bond of length R.
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
Aliases
| Alias Item Name | Dictionary Name | Dictionary Version |
|---|---|---|
| _valence_param_B | cif_core.dic | 2.3 |