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57 changes: 57 additions & 0 deletions docs/source/user_guide/benchmarks/molecular.rst
Original file line number Diff line number Diff line change
Expand Up @@ -174,3 +174,60 @@ Input structures:
Binary and Ternary Mixtures of Bis(2-hydroxyethyl)ammonium Acetate with Methanol,
N,N-Dimethylformamide, and Water at Several Temperatures. J. Chem. Eng. Data 62,
3958-3966 (2017). https://doi.org/10.1021/acs.jced.7b00654



BDEs
====

Summary
-------

Performance in predicting C-H bond dissociation energies (BDEs) for 60 CYP3A4 drug-like
substrates (CHO elements only), comprising 1117 sp3 C-H bonds across all molecules.


Metrics
-------

1. Direct BDE

Mean absolute error (MAE) of predicted BDEs against DFT reference values, in kcal/mol.

For each molecule, BDEs are computed as: BDE = E(radical) + E(H) − E(molecule), where
energies are evaluated on DFT-optimised geometries.

2. BDE rank

Mean Kendall's τ rank correlation of predicted BDE rankings against reference rankings,
evaluated per molecule and averaged across all 60 compounds.

3. Direct BDE (MLFF opt)

Same as (1), but geometries are first relaxed using the MLFF before evaluating energies.

4. BDE rank (MLFF opt)

Same as (2), but using MLFF-optimised geometries.


Computational cost
------------------

Medium: the DFT geometry tests are fast, but the MLFF geometry optimisation tests may
take several minutes per model on CPU.


Data availability
-----------------

Input structures:

* Gelzinyte, E. et al. Transferable Machine Learning Interatomic Potential for Bond
Dissociation Energy Estimation. J. Chem. Theory Comput. 20, 164-177 (2024).
DOI: 10.1021/acs.jctc.3c00710

Reference data:

* Same as input data
* B3LYP-D3BJ/def2-SV(P)
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