<p>This record contains the complete optimization trajectories, potential model, and analysis data for the Nudged Elastic Band (NEB) calculation of the ethylene + N$_2$O cycloaddition reaction. This dataset supports the accompanying manuscript <em>"Two-dimensional RMSD projections for reaction path visualization and validation"</em> and enables the full reproduction of the reported 2D RMSD landscapes and 1D energy profiles.</p>
<p>The provided data encompasses the entire computational workflow: from the pre-trained PET-MAD machine-learned potential and initial endpoint geometries to the intermediate NEB optimization steps and the final converged reaction path.</p>