Papers › Symmetry-adapted generation of 3d point sets for the targeted discovery of molecules

Symmetry-adapted generation of 3d point sets for the targeted discovery of molecules

2 Jun 2019NeurIPS 2019 12arXiv:1906.00957archive 2025-07-28

Niklas W. A. Gebauer, Michael Gastegger, Kristof T. Schütt

Deep learning has proven to yield fast and accurate predictions of quantum-chemical properties to accelerate the discovery of novel molecules and materials. As an exhaustive exploration of the vast chemical space is still infeasible, we require generative models that guide our search towards systems with desired properties. While graph-based models have previously been proposed, they are restricted by a lack of spatial information such that they are unable to recognize spatial isomerism and non-bonded interactions. Here, we introduce a generative neural network for 3d point sets that respects the rotational invariance of the targeted structures. We apply it to the generation of molecules and demonstrate its ability to approximate the distribution of equilibrium structures using spatial metrics as well as established measures from chemoinformatics. As our model is able to capture the complex relationship between 3d geometry and electronic properties, we bias the distribution of the generator towards molecules with a small HOMO-LUMO gap - an important property for the design of organic solar cells.

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