Hi Navid,

if I interpret correctly your question, either of these should do what you
need:
Chem.DeleteSubstructs(mol, Chem.MolFromSmarts("[#1X0]"))
Chem.DeleteSubstructs(mol, Chem.MolFromSmarts("[#1]"), onlyFrags=True)

HTH,
p.

On Wed, Jan 20, 2021 at 5:38 PM Navid Shervani-Tabar <nshe...@gmail.com>
wrote:

> Dear all,
>
> I was wondering if there is a function to remove "hydrogen atoms without
> neighbors" from the mol object. Thanks!
>
> Regards,
> Navid
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