Supplementary Information File

The supplementary material file contains the 3D model of various Jacobi coordinates along with the Python code to perform Space-Fixed expansion of rigid rotor-rigid rotor collision PES. The file also contains analytically fitted radial terms in MOLSCAT format along with residual plot for PES recreated from these radial terms. Finally, various plots for cross-sections and rate coefficients comparing o- and p-H2 collisional results are also provided in the supplementary material file.

本补充材料文件包含各类雅可比坐标（Jacobi coordinates）的三维模型，以及用于开展刚转子-刚转子碰撞势能面（PES，Potential Energy Surface）空间固定展开的Python代码。文件还包含采用MOLSCAT格式的解析拟合径向项，以及基于这些径向项重构势能面所得的残差图。最后，补充材料文件中还提供了用于对比正氢（o-H₂）与仲氢（p-H₂）碰撞结果的各类碰撞截面及速率系数绘图。