UiO-66 Zr6O4 cluster framework without BDC linkers. Space group Fm-3m (225), a=20.700 Å. 56 atoms: 24 Zr at 24e positions, 32 O at 32f positions forming Zr6O4 octahedral clusters at 4a sites. Built from crystallographic data in Li & Ahlquist, npj Comput. Mater. (2026).
Cell + Ionic relaxation with CHGNet; 0.05 eV/Å threshold; final energy = -516.7595 eV; energy change = -7.0747 eV; symmetry: Fm-3m → Fm-3m
Cell + Ionic relaxation with Orb v3 conservative inf MPA; 0.05 eV/Å threshold; final energy = -478.4429 eV; energy change = -17.9359 eV; symmetry: Fm-3m → Fm-3m
Cross-cycle comparison of MLIP symmetry behavior on MOF open frameworks vs dense intermetallics. MOFBuilder paper (Li & Ahlquist, npj Comput. Mater. 2026) structures tested through Orb v3 and CHGNet.