Data Item _chemical_formula.weight

General

Item name
_chemical_formula.weight
Category name
chemical_formula
Attribute name
weight
Required in PDB entries
no
Used in currrent PDB entries
No

Item Description

Formula mass in daltons. This mass should correspond to the formulae given under _chemical_formula.structural, _chemical_formula.moiety or _chemical_formula.sum and, together with the Z value and cell parameters, should yield the density given as _exptl_crystal.density_diffrn.

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]+)?

Allowed Boundary Conditions

Minimum Value Maximum Value
1.0

+∞

Aliases

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