The following eight geometrical properties were considered to identify their relationship to structural collapse: the largest cavity diameter, LCD (Å); pore-limiting diameter, PLD (Å); largest free path diameter, LFPD (Å); density (cm 3 /g); gravimetric accessible surface area, GASA (m 2 /g); volumetric accessible surface area, VASA (m 2 /m 3 ); void fraction, VF; and accessible volume, AV (cm 3 /g). Since properties that describe non-accessible surface area or non-accessible pore volume are mostly zero for the selected dataset, they were excluded.