Spontaneous chiral resolution of a 3D (3,12)-connected MOF with an unprecedented ttt topology consisting of cubic [Cd4(μ3-OH)4] clusters and propeller-like ligands

The enantiomers of complex 1 (1Δ and 1Λ), [Cd(tipa)(μ3-OH)·NO3·EtOH·DMF]n (tipa = tris(4-(1H-imidazol-1-yl)phenyl)amine), have been obtained by spontaneous resolution upon crystallization in the absence of any enantiopure substance. Complex 1 shows an unprecedented 3D (3,12)-connected metal–organic framework with ttt topology consisting of cubic [Cd4(μ3-OH)4] clusters and propeller-like ligands. The anion-exchange and iodine uptake behaviors of 1 are investigated.