FYI - the bug below is also exhibited by RDKit.

---------- Forwarded message ----------
From: Steve Constable <[email protected]>
Date: 2008/5/1
Subject: [Open Babel] Hydrogen adder error?
To: [email protected]


Hello,

I'm working with openbabel 2.1.1, and I'm having an issue with the
OBMol::AddHydrogens function.

I have the structure of guandinie ( N=C(N)N ).  when I run babel with
the -h option, everything looks good.
 However, if I change to the charged version, [N+]=C(N)N the
additional hydrogen required is not added.  Opening
the structures in jmol shows that they look exactly the same.  Is this
something that has been fixed in SVN already?

Thanks,
Steve

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