Research data for the manuscript "Design of Low-Electron-Affinity Cations by Utilizing Superalkali motif as Ligands: A DFT Study of Hyperalkali Species X(Li3O)n+ (n = 2, 3; X = CN, BO2, SCN, N5, CO3)"

This dataset contains B3LYP/6-311+G(3df) optimized geometries and frequencies for X(Li3O)n⁺ (n = 2, 3) and X(Li3O)n (n = 1, 2; X = CN, BO2, SCN, N5, CO3), along with MP2/6-311+G(3df) single-point energies, OVGF vertical electron affinities, and NPA charges. Also included are OVGF results for Li3O+ and MP2/B3LYP data for the free anions X-. All data are provided in plain text.