Diffraction-quality crystals of ZIF-2 were obtained according to a previously described procedure (ESI Section 1). Upon close inspection of the refined structure, significant peaks of residual electron density were observed in the vicinity of the DMF molecules (up to 1.6 electrons/Å 3 ), indicating unaccounted electron density. The arrangement of these residual peaks strongly suggested solvent disorder, therefore each DMF entity was split into two fragments with variable occupancy, and the HAR procedure was repeated, this time with seven distinct molecular fragments (one for the zinc imidazolate fragment, and two for each of the disordered DMF molecules).