Comparison of structural characteristics in metal–organic frameworks with the highest SO₂ capture.

Material	MOF-177	MFM-170	MIL-101(Cr)-4F(1%)
Ligand	H3BTB	H4L = 4′,4′′′-(pyridine-3,5-diyl)bis([1,1′-biphenyl]-3,5-dicarboxylic acid)
			H2BDC/H2BDC-4F
SBU	[Zn4(μ4-O)(O2CR)6]	[Cu2(O2CR)4]	[Cr3(μ3-O)(O2CR)6]
BET surface area [m2 g−1]	4100	2408	2176
Pore volume [cm3 g−1]	1.51	0.88	1.19
SO2 adsorption [mmol g−1]	25.7	17.5	18.4
Packing density [cm3 g−1]	1.09	1.27	1.00
Stability under SO2	Partial destruction after SO2 exposure	Stable after 50 cycles	Stable after 50 cycles