Atom_RestrictFreeSites Property

CDXML Name:FreeSites
CDX Constant Name:kCDXProp_Atom_RestrictFreeSites
CDX Constant Value:0x0423
Data Size:UINT8
Property of objects:kCDXObj_Node
First written/read in:ChemDraw 4.0


Indicates that up to the specified number of additional substituents are permitted on this atom.

A substituent is defined as some other node bonded to this one. It is strictly a count of attached bonds, and not a count of bond orders.

A value of zero indicates that the atom must be matched as drawn.

If this property is absent:

The node is treated as unrestricted in terms of free sites.


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