Cell + Ionic relaxation with Orb v3 conservative inf MPA; 0.01 eV/Å threshold; final energy = -92.1914 eV; energy change = -0.0553 eV; symmetry: P6_3/mmc → P6_3/mmc
Properly constructed C14 TiCo₂ reference structure: P6₃/mmc (#194), a=4.73 Å, c/a=1.6321, 12 atoms (Ti₄Co₈). Ti at 4f, Co at 2a + 6h. Min bond distance 2.318 Å.
TiCo₂ C14 Laves with proper reference CIF survives Orb v3 P6₃/mmc intact — the earlier P3 result was an input artifact