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International
Tables for Crystallography Volume G Definition and exchange of crystallographic data Edited by J. R. Hester and B. McMahon © International Union of Crystallography 2026 |
International Tables for Crystallography (2026). Vol. G. Early view chapter
https://doi.org/10.1107/97809553602060001011 Chapter 4.2 Core dictionary (coreCIF) |
Core dictionary version 3.3.0
_chemical_conn_bond.type
Name:_chemical_conn_bond.type
Aliases:
_chemical_conn_bond_type
_chem_comp_bond.value_order
Definition:
The chemical bond type associated with the connection between the two sites
_chemical_conn_bond.atom_1 and *_2.
Type: Text
The data value must be one of the following:
|
sing | Single bond. |
|
doub | Double bond. |
|
trip | Triple bond. |
|
quad | Quadruple bond. |
|
arom | Aromatic bond. |
|
poly | Polymeric bond. |
|
delo | Delocalized double bond. |
|
pi | Pi bond. |
Category:
chemical_conn_bond
