Hi Omar,

MMFF94 definitions are not encoded via SMARTS patterns. Definition are stored in Code/ForceField/MMFF/Params.cpp (defaultMMFFDef).

You may find them here in a more human-readable form:

https://github.com/openbabel/openbabel/blob/master/data/mmffdef.par

Cheers,
p.

On 16/03/2020 08:27, Omar H94 wrote:
Dear RDKit users,

The function *GetMMFFAtomType* from the *rdForceField *module returns a number describing the assigned atom type by the forcefieldĀ of the queried atom. I want to get the definitionĀ of the atom type which the number represents. I wonder if there's a dictionary or a documentation that contains the atom type meaning or SMARTS**of each number ?

Thanks,
Omar


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