Bugs item #3203137, was opened at 2011-03-08 16:41
Message generated for change (Tracker Item Submitted) made by dhouston6
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Category: Command-line Tools
Group: 2.3.x
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Douglas Houston (dhouston6)
Assigned to: Nobody/Anonymous (nobody)
Summary: Gasteiger partial charges and the -p option

Initial Comment:
I have observed something curious about variations in the way OpenBabel assigns 
Gasteiger charges.

For example,

babel -isdf molecule.sdf -omol2 molecule_H.mol2 -h

produces a molecule with an overall charge that is essentially 0. However, the 
command

babel -isdf molecule.sdf -omol2 molecule_H.mol2 -p 7.4

produces a molecule that has an overall charge of -9.0. Both output files have 
had the same number of hydrogens added. Is this what's supposed to happen?

I have attached the input file for others to test. This seems to happen with 
both 2.2.3 and 2.3.0,



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What You Don't Know About Data Connectivity CAN Hurt You
This paper provides an overview of data connectivity, details
its effect on application quality, and explores various alternative
solutions. http://p.sf.net/sfu/progress-d2d
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