Position and frequency variation at the same time

User 2b68687bb8

29-03-2010 10:17:49



I understand how position and frequency variation can be used, independently. What I do not know how to do is how to use them at the same time. Let's say, I select two contiguous atoms, and do position variation for a substituent. It works. Then I select again the same two atoms for repetition, but when doing markush enumeration, I get:

Error during molecule display: java.lang.ArrayIndexOutOfBondsException: Array index out of range: 2

I attach the file.

Is it then possible to do the two things at the same time?



ChemAxon a3d59b832c

29-03-2010 16:35:33


It should be possible. I think it already works together with link nodes, see example here:



We'll check what is wrong with the repeating groups.


Best regards,


ChemAxon fb166edcbd

12-04-2010 17:14:48

I have found a bug in our clonecopy mechanism which seems to be the direct cause of this problem.
We are working on the solution and will let you know when it is fixed. Thanks for the report.

ChemAxon fb166edcbd

12-10-2010 14:15:57

The clonecopy bug has been fixed and the correction will be available in the 5.4 release.

However, your input molecule is also incorrect: only the two non-central atoms of the multicenter are contained in the repeating unit. I have fixed this, the new molecule is attached. Using this, enumeration in the 5.4 Marvin will give you all of the 6 enumerates:

cxcalc enumerations position_and_frequency_variation_fixed.mrv -f smiles