Cell + Ionic relaxation with Orb v3 conservative inf MPA; 0.03 eV/Å threshold; final energy = 401.6866 eV; energy change = -23.1616 eV; symmetry: Pnma → P1
BiSBr chalcohalide crystal structure, SbSI-type, Pnma (No. 62). Lattice: a=8.05, b=9.50, c=4.03 Å. Source: Nielsen et al., J. Mater. Chem. A, 2025 (lattice params from López et al. arxiv:2512.01531). Built from SbSI prototype ICSD coordinates.