Volume 2 Chapter 2 2D-Constrain Sub-menu ALLBOND

Function

ALLBOND is used to specify that all bonds in the search fragment must be either cyclic or acyclic.

Example

Suppose we have built the fragment (i) - see below.

Select ALLBOND

C appears in the ALLBOND box.

Re-select ALLBOND to delete this constraint or change to ACYCLIC
Select a MENU command, or select an ATOM or BOND to display its properties.

If we conducted a search with the above specification, viz. ALLBOND C, then a hit would be registered for the apomorphine derivative (ii) but no hit would be registered for the adrenalone derivative (iii).

The ALLBOND option toggles with respect to 3 settings:

CYCLIC
ACYCLIC
UNSPECIFIED.

The toggle process is analogous to that described for the CYCLICITY command.

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Volume 2 Chapter 2 2D-Constrain Sub-menu ALL-EXACT .