A chiral porous 3D metal–organic framework with an unprecedented 4-connected network topology

A novel homochiral 3D metal–organic framework [CdL2(H2O)2][ClO4]2·2DMF·3EtOH·5/3H2O, 1, (L =(R)-6,6ʹdichloro-2,2ʹ-diethoxy-1,1ʹ-binaphthyl-4,4ʹ-bipyridine) exhibits an unprecedented 4-connected network topology owing to the cis- configuration of the Cd coordination and possesses permanent porosity as demonstrated by TGA, XRPD, and CO2 adsorption isotherm studies.