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Bibliographic Details
Main Authors: Zhang, Jiahui, Zhu, Yifei, Feng, Chuqiao, Ma, Yingjin, Xu, Chao, Lan, Zhenggang
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2605.14287
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Table of Contents:
  • Conical intersections play central roles in photoinduced reactions. However, comprehensive conical-intersection datasets that could advance our understanding of excited-state reaction processes remain scarce. To address this gap, we constructed a quantum chemistry dataset containing ground-state and conical-intersection structures of small molecules (up to ten heavy atoms: C, N, O, F). Ground-state geometries were optimized at the semi-empirical OM2 level, with single-point energies calculated at the OM2/MRCI level. Conical-intersection geometries and energies were also computed at the OM2/MRCI level. This dataset is designed to enable a deep integration of photochemistry with machine learning, bridging the gap between photochemical insight and data-driven approaches.