Crystallographic Information Framework

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Index

Topology dictionary (topoCIF) version 0.9.6

_topol_link.type

Name:
_topol_link.type

Definition:

   
    The chemical bond type associated with the connection between the
    two sites. If no bond exists, use an undelimited period character.
    If the bond type is unknown, use ? or leave out the data item. The
    number of electron pairs participating in the bond can be indicated
    using _topol_link.order. The value 'sb' or 'gl' should be used for
    any case where the connection is not a bond between two atoms.

Type: Code


The data value must be one of the following:


ar
aromatic bond

v
valence bond

pi
pi bond

hb
hydrogen bond

vw
van der Waals contact

sb
special bond type described in _topol_link.special_details

gl
generic link

Category:
topol_link