A new 3-fold interpenetrated metal-organic framework (MOF) based on trinuclear zinc(II) clusters as secondary building unit (SBU)

A new metal-organic framework (MOF), [Zn3(4,4’-ADB)3(BIB)2]n (1) has been synthesized based on mixed bridging ligands BIB and 4,4’-ADB (BIB = 1,4-bis(2-methyl-imidazol-1-yl) butane, 4,4’-ADB = azobenzene-4,4’-dicarboxylica acid). This MOF is a 3D structure with trinuclear zinc(II) clusters as SBU. The trinuclear zinc (II) clusters of line style feature zincs in two tetrahedral and one octahedral coordination environments. The MOF exhibits a 3-fold interpenetrated framework with 36·418·53·6 topology, which reduces the effective void but stabilizes the compound.